REACTIVITY STUDIES OF SLUDGE AND BIOMASS COMBUSTION Noorfidza
Yub Harun Muhammad T Afzal Norliza Shamsuddin Faculty of Forestry
and Environmental Management University of New Brunswick,
Fredericton, NB CSBE Annual Conference, Brudenell River Resort,
Prince Edward Island, July 12-15, 2009
INCREASE IN CRUDE OIL PRICE PROJECT BACKGROUND CURRENT ISSUES
GLOBAL WARMING .. biomass has a great potential today and in the
future, since it is renewable, in contrast to the nature of the
fossil fuels - E. NATARAJAN- INCREASE IN ENERGY DEMAND DEPLETION OF
FOSSIL RESOURCES
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BIOMASS WASTE 20.8 million tonnes available can generate 700MW
energy one-third for energy production saved RM 2 billion of
imports bill Petroleum Refinery Sludge Sugar Cane Bagasse Sawdust
100,000 tonnes annually drying and filter press alone sending to
centralized waste treatment; costly
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INITIAL BIOMASS PROPERTIES Calorific Value Composition
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OBJECTIVE DETERMINE THE KINETIC PARAMETERS OF SLUDGE, BAGASSE
AND SAWDUST DETERMINE THE KINETIC PARAMETERS OF SLUDGE, BAGASSE AND
SAWDUST
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THEORY
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METHODOLOGY Preparation of Samples Heating at 110 o C (2 hours)
Grinding
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METHODOLOGY Controlled Parameters Effect of Heating Rate: 35 o
C/min, 50 o C/min Effect of Sample Size: 425 m, 1.18 mm
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METHODOLOGY (i) Moisture Content Analysis (ii) Calorific Value
Analysis (iii) Composition Analysis (iv) TGA Analysis
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RESUTLS & DISCUSSION Sample Pre-treatment
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RESUTLS & DISCUSSION TGA Analysis - Indicates by-product,
includes non-condensable & condensable gas - Devolutilisation
at 150- 220 C Decompose at 100- 150C Carbonization at 250- 300
C
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RESUTLS & DISCUSSION TGA Analysis Zone 1 Zone 2
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RESUTLS & DISCUSSION Thermal Degradation of Sludge Effect
of Heating Rate and Particle Size Zone 1 Zone 2
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RESUTLS & DISCUSSION Thermal Degradation of Bagasse Effect
of Heating Rate and Particle Size
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RESUTLS & DISCUSSION Thermal Degradation of Sawdust Effect
of Heating Rate and Particle Size
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Kinetic Parameters Exp. run Ea (kJ/mol)Z (1/min) 1 st. zone2
nd. zone1 st. zone2 nd. zone 144.2935.685.43 x 10 5 6.80 x 10 4
245.0537.717.11 x 10 5 7.11 x 10 4 342.9832.453.71 x 10 4 7.03 x 10
3 443.9734.973.94 x 10 4 7.23 x 10 3 597.3272.721.45 x 10 7 3.80 x
10 4 698.9661.262.26 x 10 7 8.63 x 10 4 776.7769.292.09 x 10 5 5.52
x 10 3 878.1264.503.27 x 10 5 8.82 x 10 3 938.60142.373.33 x 10 2
6.04 x 10 10 1048.59152.143.97 x 10 2 7.10 x 10 10 1142.6778.231.77
x 10 2 1.01 x 10 5 1243.34116.701.87 x 10 2 1.22 x 10 5
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RESUTLS & DISCUSSION Kinetic Parameter Analysis; Activation
Energy for Sludge, Bagasse and Sawdust
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CONCLUSIONS Two distinct reaction zones were observed for all
samples The kinetic parameters; activation energy and
pre-exponential factors, for sludge and bagasse, in the first zone
were found to be significantly higher than that of the second zone.
while for sawdust the trend was other ways.
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RECOMMENDATIONS 4. Vary more properties 3. Investigate other
biomass properties 2. Analyze volatiles and gases species using
FTIR 1. Analyze using SEM for polymeric structure