Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar...

27
Municipal Organic Solid Waste as an Alternative Urban Bioenergy Source WANG Jing-Yuan Associate Professor, School of Civil & Environmental Engineering Director, Environmental Engineering Research Centre 23 – 25 January 2008

Transcript of Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar...

Page 1: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Municipal Organic Solid Waste as an

Alternative Urban Bioenergy Source

WANG Jing-Yuan

Associate Professor School of Civil amp Environmental Engineering Director Environmental Engineering Research Centre

23 ndash 25 January 2008

World Energy Consumption

(from Wikipedia)

World Energy Consumption

(from Wikipedia)

05

03

4

Energy energy and energy

bull Increasing energy demand due to rapid urbanization

(especially mega cities) and industrialization

bull Depletion of fossil fuel resource and rising oil price

bull Oil gas and coal would still continue to be important components of global energy supply (~80+)

bull Alternative energy sources such as solar energy wind energy and bioenergy will gain more attention

bull In South and Southeast Asia more than 1 billion population has no grid connected electricity

bull Decentralized bioenergy

Organic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE Asia

Rice husk Palm oilWood residues

Rice husk Sugar

bagassePalm oil

Pulp amp paper Wood

Residues

Rice husk

Wood residues

Rice husk

Wood residues

Rice husk Sugar bagasse

Palm oil Pulp amp paper

Rice husk Sugar bagasse Palm oil

Pulp amp paper Wood residues

Rice husk Sugar bagasse

Pulp amp paper Wood residues

(Industrial Power Technology)

Biomass in SingaporeBiomass in Singapore

(The Straits Times)

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 2: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

World Energy Consumption

(from Wikipedia)

World Energy Consumption

(from Wikipedia)

05

03

4

Energy energy and energy

bull Increasing energy demand due to rapid urbanization

(especially mega cities) and industrialization

bull Depletion of fossil fuel resource and rising oil price

bull Oil gas and coal would still continue to be important components of global energy supply (~80+)

bull Alternative energy sources such as solar energy wind energy and bioenergy will gain more attention

bull In South and Southeast Asia more than 1 billion population has no grid connected electricity

bull Decentralized bioenergy

Organic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE Asia

Rice husk Palm oilWood residues

Rice husk Sugar

bagassePalm oil

Pulp amp paper Wood

Residues

Rice husk

Wood residues

Rice husk

Wood residues

Rice husk Sugar bagasse

Palm oil Pulp amp paper

Rice husk Sugar bagasse Palm oil

Pulp amp paper Wood residues

Rice husk Sugar bagasse

Pulp amp paper Wood residues

(Industrial Power Technology)

Biomass in SingaporeBiomass in Singapore

(The Straits Times)

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 3: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Energy energy and energy

bull Increasing energy demand due to rapid urbanization

(especially mega cities) and industrialization

bull Depletion of fossil fuel resource and rising oil price

bull Oil gas and coal would still continue to be important components of global energy supply (~80+)

bull Alternative energy sources such as solar energy wind energy and bioenergy will gain more attention

bull In South and Southeast Asia more than 1 billion population has no grid connected electricity

bull Decentralized bioenergy

Organic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE AsiaOrganic Waste (Biomass) in SE Asia

Rice husk Palm oilWood residues

Rice husk Sugar

bagassePalm oil

Pulp amp paper Wood

Residues

Rice husk

Wood residues

Rice husk

Wood residues

Rice husk Sugar bagasse

Palm oil Pulp amp paper

Rice husk Sugar bagasse Palm oil

Pulp amp paper Wood residues

Rice husk Sugar bagasse

Pulp amp paper Wood residues

(Industrial Power Technology)

Biomass in SingaporeBiomass in Singapore

(The Straits Times)

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 4: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Biomass in SingaporeBiomass in Singapore

(The Straits Times)

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 5: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

(The Straits Times)

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 6: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

(Industrial Power Technology)

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 7: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Available ldquoUrban Biomassrdquo in Singapore

(2006)

bull Food waste 498000 tonnes (194)bull PaperCardboard waste 544900 tonnes (213)bull Plastic waste 579000 tonnes (226)bull WoodTimber waste 142000 tonnes (55)bull Horticultural waste 144000 tonnes (56)bull Total organic waste available as Resources

= 191 M tonnes (744)

PUBrsquos dewatered sewage sludge = 270000 tonnesyear

(National Environment Agency of Singapore 2006)

Biomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy TechnologiesBiomass to Energy Technologies(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)(Oregon Department of Energy)

TechnologyTechnologyTechnologyTechnologyConversion Conversion Conversion Conversion Process TypeProcess TypeProcess TypeProcess Type

Major Biomass Major Biomass Major Biomass Major Biomass FeedstockFeedstockFeedstockFeedstock

Energy or Fuel Energy or Fuel Energy or Fuel Energy or Fuel ProducedProducedProducedProduced

Direct Combustion

thermochemical woodagricultural waste municipal solid waste residential fuels

heatsteamelectricity

Gasification thermochemical woodagricultural waste municipal solid waste

low or medium-Btu producer gas

Pyrolysis thermochemical woodagricultural waste municipal solid waste

synthetic fuel oil (biocrude)charcoal

Anaerobic Digestion

Biochemical(anaerobic)

animal manureAgriculture waste

Medium Btu gas(methane)

Ethanol Production

biochemical(aerobic)

sugar or starch cropswood wastepulp sludgegrass straw

ethanol

Biodiesel Production

chemical rapeseedsoy beanswaste vegetable oilanimal fats

biodiesel

Methanol thermochemical woodagricultural waste municipal solid waste

methanol

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 8: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Key Challenges and Opportunities

(Randal Goodfellow)

Output Feedstock Preparation Key

transformation

Refining Distribution

Usage

Co-products

Transportation

Ethanol (starch)

Designer crop De-watering Continuous flowMicrobials

Mostly resolved Sediment Market for

DDG

Ethanol (cellulose)

Beyond clean straws to waste cellulose

Acid and enzyme

Pre-treatment

De-watering

Right-sizing business model

Mostly resolved Sediment What to do

with C5

sugars

Biodiesel Beyond food

crops

Blue-green

algae

Purityconsistency of non-virgin oils De-watering

Higher efficiency catalyst Containment of catalyst

Product consistency Standards

Water contamination

Glycerine

quality

markets

Heat and Electricity

Biogas (Anaerobic Digestion)

Beyond manure SRM Recipies

Particle size

De-watering

Well understood Microbial efficiency and nutrition

Gas clean-up Gas compression

Generator efficiency and robustness

Markets for

spent

digestate

Syn Gas(Gasification)

Beyond homogeneous feedstock

Sorting

technology

Moisture removal

De-watering

Heat transfer Material handling

Gas clean-up Gas compression

Generator efficiency and robustness

Market development for CO2

Bio Oil(Pyrolysis)

Beyond homogeneous feedstock

Particle size De-watering

Mostly worked through

Chemical

characterization

and extraction

Generator

efficiency and

robustness

Use of fuel as the co-product

BiomassndashtondashEnergy Application in Singapore

bull Bio-diesel using used cooking oil (2006)

bull Four bio-diesel plants to be established on Jurong Island (2006) palm oil (3) and Jatropha (1)

bull Mixing 5 bio-diesel in the regular diesel

bull Clean energy hub (S$170M) solar biomass biofuel and hydrogenfuel cell

bull Food waste to compost and methane (2007)

(World Biomass Energy)

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 9: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

NTUNTUrsquorsquos Waste to Bioenergy Research s Waste to Bioenergy Research

NTUrsquos Waste to Bioenergy Research CoCo--production of bioproduction of bio--hydrogen and biohydrogen and bio--methane using a threemethane using a three--phasephase

hybrid anaerobic solidhybrid anaerobic solid--liquid digestion systemliquid digestion system

Bioconversion of green waste to sugars for bioBioconversion of green waste to sugars for bio--ethanol productionethanol production

Organic waste degradation and electricity generation using Organic waste degradation and electricity generation using

microbial fuel cellsmicrobial fuel cells

Energy recovery from postEnergy recovery from post--consumer plastic waste using pyrolysisconsumer plastic waste using pyrolysis

Algae biofuel production using photobioreactors Algae biofuel production using photobioreactors

Biomass Derived Fuel (BDF) Biomass Derived Fuel (BDF)

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 10: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Peristaltic

pumps

Gas Meter

Acidogenic

Reactor (Ra)

Methanogenic

Reactor (Rm)

Effluent

from Rm Biogas

Production

Hybrid Anaerobic SolidHybrid Anaerobic Solid--Liquid (HASL) SystemLiquid (HASL) System

HASL Bioreactor Vs Conventional Anaerobic DigestersHASL Bioreactor Vs Conventional Anaerobic Digesters

HASL systemsingle pass reactor (right)

leachate recycle reactor

(left)

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 11: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

HASL BIOREACTOR Vs CONVENTIONAL AD REACTORSHASL BIOREACTOR Vs CONVENTIONAL AD REACTORS

40

50

60

70

80

0 2 4 6 8 10 12

operation time (day)

pH

R1 leachate R2 leachate R3 leachate Rm effluent

0

3

6

9

12

15

18

0 2 4 6 8 10 12

operation time (day)

tota

l VFAs (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

7

14

21

28

0 2 4 6 8 10 12

operation time (day)

CO

D (gL

)

R1 leachate R2 leachate R3 leachate Rm effluent

0

20

40

60

80

0 2 4 6 8 10 12

operation time (day)

0

20

40

60

80

100

CH

4 c

onte

nt (

)

R1R2R3 CH4 yield Rm CH4 yield Rm CH4 content

cum

ula

tive C

H4 y

ield

(L)

SemiSemi--continuous HASL Systemcontinuous HASL System

The semiThe semi--continuous HASL systemcontinuous HASL system

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 12: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

The mini pilotThe mini pilot--scale HASL systemscale HASL system

The enhanced HASL system with submerged biofilterThe enhanced HASL system with submerged biofilter

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 13: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

HASL Bioreactor vs Conventional Anaerobic DigestersHASL Bioreactor vs Conventional Anaerobic Digesters

Submerged biofilterSubmerged biofilter Carrier and biofilmCarrier and biofilm

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Experimental setupExperimental setup

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 14: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Control20 lipids

30 lipids 40 lipids

Effects of lipid on HASL performanceEffects of lipid on HASL performance

Methanogenic bacteria

methanogenic bacteria with autofluorescence under epifluorescence microscope

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 15: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

1 NaCl

Effects of salt on HASL performanceEffects of salt on HASL performance

Control

2 NaCl 3 NaCl

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 16: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Effects of food waste fertilizers added in different dosages

to subsoil on Kang Kong growth

HASL Pilot Plant NTU

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 17: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Ammonia

detector

Feeding and shredding Aeration and sedimentation Submerged bio-filter

Acidogenesis Equalization Methanogenesis

DischargeHighLow

The demoThe demo--plant plant

for cofor co--generation generation

of hydrogen and of hydrogen and

methane with a methane with a

capacity of 3 capacity of 3

tonnes of food tonnes of food

waste per daywaste per day

NTU Research Activities (waste)

Hydrogen Methane

Residue as fertilizer

Food waste

Reuse

NTU unleashes energy hidden in food wasteNTU unleashes energy hidden in food waste

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 18: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Three-phase AD for co-production of Bio-H2 and Bio-CH4

Complex Starch-rich materialsDisintegration and hydrolysis+ Acidogensisby Clostridia Glucose

Acetate H2 and CO2

Acetate H2

CH4 and CO2

Acidogenesis byClostridia

Acetogenesis + Methanogenesis

Butyrate

Acetate Butyrate H2 and CO2

The proposed three-phase AD system for co-production of Bio-H2 and Bio-CH4

from food waste

H2H2

CH4

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 19: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

NTU Research Activities (Waste)

Bio-ethanol Production from Green Wastes

Anaerobic hydrolyzing microorganisms Anaerobic hydrolyzing microorganisms

are isolated from natural sources and are isolated from natural sources and

guts of tropical woodguts of tropical wood--eating insects like eating insects like

termites and caterpillars to convert termites and caterpillars to convert

green waste into sugars as substrate for green waste into sugars as substrate for

ethanol productionethanol production

In the proposed bioIn the proposed bio--production production

process the biopolymers of process the biopolymers of

green waste are converted into green waste are converted into

ethanol due to the simultaneous ethanol due to the simultaneous

activities of hydrolyzing and activities of hydrolyzing and

ethanolethanol--producing producing

microorganismsmicroorganisms

Bioreactor

Organic

waste Shredder

Vegetable residues

Potato waste

Fruits peels

Ethanol

Hydrolyzing

microorganisms

Ethanol- producing

microorganisms

Nutrients

Straw amp grass

(unknown net source ndash thanks)

Termites and their Intestinal Microbes

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 20: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Gram staining

Isolation from 1yr compost (x3000)

Isolation from 3-4 M compost (x3000)

Isolation from aerobic sludge (x3000)

Isolation from garden soil (x3000)

Isolation from termite guts (x3000)

Waste to Electricity with Microbial Fuel CellWaste to Electricity with Microbial Fuel Cell

Innovations MediatorInnovations Mediator--less less

membranemembrane--less electrode with big less electrode with big

surface areasurface area

Using naturallyUsing naturally--occurring occurring

microorganisms or facultative microorganisms or facultative

anaerobic ironanaerobic iron--reducing bacteriareducing bacteria

Changing bioreactor design Changing bioreactor design

configuration to avoid the use of configuration to avoid the use of

membranesmembranes

Using an electrode with very Using an electrode with very

large surface area to enhance large surface area to enhance

electron transfer electron transfer

NTU Research Activities (waste)

(unknown net source ndash thanks)

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 21: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

NTU Research Activities (Waste)Energy Recovery from Plastics Waste using PyrolysisEnergy Recovery from Plastics Waste using Pyrolysis

N2

Operation Controller

Condenser

ChillerCondensate

(Liquid Hydrocarbon)

Plastics waste

Gas Bag(Gaseous

Hydrocarbon)

Ash collected

Recover energy from plastics Recover energy from plastics

waste with thermal treatmentwaste with thermal treatment

Products (gas liquid solid) Products (gas liquid solid)

with high potential for reusewith high potential for reuse

Good for waste minimizationGood for waste minimization

Pyrolysis diagram

Liquid products from pyrolysis

Experimental setup

Algae BiofuelAlgae Biofuel

As primary producers algae

presents a great potential for

converting sunlight into chemical

energy This project explores the

potential of biofuel production

from algae in Singapore

Alpha Synovate Pte Ltd

Alpha Biofuels Singapore

Benoit Guieysse Wang Jing-Yuan

Tan Hai Woon and Allan Lim

NTU Research Activities (Waste)

CO2

Oil

recovery amp

biodiesel

production

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 22: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Biomass Derived Fuel (BDF)Biomass Derived Fuel (BDF)

NTU Research Activities (Waste)

(Global Environment Centre Foundation)

I had a dreamhellip

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 23: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Thank YouThank You

Energy Resource Management (Diversification)

(unknown net source ndash thanks)

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 24: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Energy Resource Management (Integration)

(unknown net source ndash thanks)

Energy Resource Management (Decentralization)

(unknown net source ndash thanks)

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流

Page 25: Municipal Organic Solid Waste as an Alternative Urban ... Files/A0801/0204.pdfRice husk, Sugar bagasse,Palm oil, Pulp & paper, Wood Residues Rice husk, Wood residues ... • Paper/Cardboard

Energy Resource Management (Conservation)

(unknown net source ndash thanks)

Energy Resource Management

开开开开源源源源开开开开源源源源 节节节节流流流流节节节节流流流流