Post on 05-Feb-2018
Anaerobic Digestion of Algae Extraction Process Waste to Produce Biogas
PTT Research and Technology Institute
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Research Team
Vice President, Environmental Research and Management
MRS. SARINTIP VAEWHONGS
MR. PANYAMEE SACHAKAMOL
Researcher Dr. CHALERMCHAI RUANGCHAINIKOM
Vice President, Project Support and Environmental Management Dr. KANATIP RATANACHOO
Researcher
MRS. GAMGARN THUMMADETSAK Specialist
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(พนัลา้นบาท) รายได ้Revenue
(THB Billions)
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Project Overview
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• To seeks at evaluating the applicability of Spirulina platesis biomass for biogas production purposes
• To Determines the effectiveness of biogas fermentation of algae from different sources
Objectives :
Targets :
• Aim at zero emission Scheme for Spirulina process • Initiate new path of energy production from processed waste
Objectives
Spirulina sp.
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Spirulina sp.
Cell walls are composed of mucopolysaccharides rather than indigestible cellulose
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Spirulina Products
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Spirulina Farms around the World
Spirulina Mexicana’s Caracol in Lake Texcoco near Mexico City.
Earthrise Nutritionals in Imperial Valley California USA.
Lake harvesting, dewatering and drying spirulina in Myanmar. Courtesy of Min Thein.
Cyanotech on the Kona Coast, Hawaii
Parry Nutraceutical spirulina ponds in India
Some of the largest Chinese spirulina farms are on Hainan Island
Source: Development of a Spirulina Industry – Production, Robert Henrikson, AlgaeIndustryMagazine.com, 2011
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Spirulina Farms in Thailand
Boonsom Spirulina Farm in Chiangmai, Thailand
Boonsom Farm is a medium size (60,000m2) family-owned spirulina farm, producing finished products for the regional market in Thailand and Asian countries for the past 20 years. Boonsom Farm is promoted as an algae-tourism destination, offering a tour, samples of spirulina foods and a spirulina health spa.
Marine Spirulina Farms in Nakhon Si Thammarat, Thailand (SPIMAX)
The farms grow spirulina algae with salty seawater in closed chambers. Therefore, it can be guaranteed that there is no contamination from any other types of algae. They are the only farms in Thailand that grow algae with seawater, whereas other competitors use brackish or fresh water.
Sources: http://www.boonsomfarm.com http://marinespirulina.com
•Enhance CO2 fixation efficiency
• Double Productivity
•Controlled Environment
Flat-Plate PBR Tubular PBR Air-Lift PBR
Closed Photobioreactor around the world
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Spirulina Growth Factors
Spirulina Cultivation
CO2
Strain
Nutrient
Inoculum
Rain Contamination
Agitation and Aeration
Depth of Culture
pH
Temperature
Light Intensity
Culture System
Source: http://www.rdi.ku.ac.th/kasetresearch52/01-celebrate/natpas/celebrate_00.html
Conceptual Design
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Airlift-Tubular PBR Detailed Design
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Airlift-Tubular PBR 3D Models
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Airlift-Tubular PBR Completion
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Project Concepts
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Region & Process Net Energy
โครงการวิจัยวิจัยลดโลกร้อน ถวายพ่อ ดว้ยสาหร่ายเกลียวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
โครงการวิจัยลดโลกร้อน ถวายพ่อ ด้วยสาหร่ายเกลยีวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
Anaerobic Digestion
Anaerobic Digestion offers a sustainable solution: BioEnergy for Electricity BioCNG, household gas Reduced environmental pollution Less energy input - Reduction of odor (Close system)
ENERGY
BIOGAS
Algae based CO2
capture field
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โครงการวิจัยวิจัยลดโลกร้อน ถวายพ่อ ดว้ยสาหร่ายเกลียวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
โครงการวิจัยลดโลกร้อน ถวายพ่อ ด้วยสาหร่ายเกลยีวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
Compound Chem %
Methane CH4 50–75
Carbon dioxide CO2 25–50
Nitrogen N2 0–10
Hydrogen H2 0–1
Hydrogen sulfide H2S 0–3
Oxygen O2 0–0
Typical Composition of Biogas
BIOGAS (CH4 60%) = 21.48 MJ/m3
Gross Calorific Value (MJ/m3)
NATURAL GAS (CH4 99%) = 36.14 MJ/m3
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โครงการวิจัยวิจัยลดโลกร้อน ถวายพ่อ ดว้ยสาหร่ายเกลียวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
โครงการวิจัยลดโลกร้อน ถวายพ่อ ด้วยสาหร่ายเกลยีวทอง Greenhouse Gas Sequestration by BioCarbon Capture (BCC) to Renewable BioEnergy
ANAEROBIC DEGRADATION
Algae Biomass
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Preliminary Test
BMP TEST
biochemical methane potential
YIELD of Biogas Production From Algae biomass
PRELIMINARY CALCULATION OF BIOGAS VALUE
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BMP TEST
Substrates
INNOCULUM (BACTERIA)
BIOGAS PRODUCTION
Varying F/M Ratio
0.1-1.5
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3. Process waste
2. Lipid extraction
1. Whole cell
Hexane Extraction
3. Process waste
2. Lipid extraction
1. Whole cell
Source Preliminary test Evaluating potential substrate
Results
BMP Test Modified Basal medium - Li and Noike, 1992
Wastewater Property
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50.00
100.00
150.00
200.00
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300.00
350.00
400.00
450.00
500.00
0 10 20 30 40 50 60 70
cum
ula
tive
gas
pro
du
ctio
n (
ml)
Time (d)
Whole cell Wastewater Lipid extraction
BMP results - 3 substrates
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50.00
100.00
150.00
200.00
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300.00
350.00
400.00
450.00
500.00
0 10 20 30 40 50 60 70
Cu
mu
lati
ve g
as p
rod
uct
ion
(m
L)
Time (day)
with basal without basal
! COD:N:P (300:5:1)
Comparative Results (Basal & Without Basal)
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BMP Test Results-3 Substrates
Samples Whole Cell Processed waste Lipid extraction
BMP (m3 STP/kg COD added)
0.237±0.004 0.250±0.005 0.232±0.002
Highest biogas (ml/day)
14.2 14.17 15.1
Biogas (m3 STP/kg COD added)
0.352±0.005 0.379±0.008 0.376±0.004
CH4 content in biogas (%)
67 60 62
Biodegradability (%)
68 72 66
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CONCLUSION
Processed waste offer highest biogas production of 0.379 m3 STP/kg(COD added) All 3 substrates are potentially available for Biogas Production Feedstock availability must be considered before Commercial Scale
Next Step
Potential Feedstock
Effect of organic loading rate
Effect of HRT
OPTIMIZATION OF Spirulina Biogas UTILIZATION
Initial Chemical oxygen demand COD =>100,000 mg/L
Criteria: VFA/ALKALINITY =0.8
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Next Step
P&ID
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3D-DESIGN
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BGR 30 L Capacity
•Rigid •Homogenous mixing •pH measure
REACTOR 30L CAPACITY
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•Pressure gage display •Water level display •Safety release valve •Water Hoses
REACTOR 30L CAPACITY
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Biogas composition (%) (CO2, CH4, O2,)
Portable Biogas Analyzer
Gas Counter
(Custom made)
Biogas counter (mL)
REACTOR 30L CAPACITY
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Complete Installation
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To be successful, the first thing to do is fall in love with your work. – Sister Mary Lauretta -
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Thank You
Panyamee Sachakamol panyamee.s@pttplc.com