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Kinetic evaluation of palm oil mill effluent digestion in a high rate up-flow anaerobic sludge fixed film bioreactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
36073 45120 2006 9 PDF Available
Title
Kinetic evaluation of palm oil mill effluent digestion in a high rate up-flow anaerobic sludge fixed film bioreactor
Abstract

A kinetic study of the anaerobic digestion process of palm oil mill effluent (POME) was carried out in a laboratory-scale up-flow anaerobic sludge fixed film (UASFF) bioreactor at mesophilic temperature (38 °C). Influent COD concentrations in the range of 5260–34725 mg/l were applied at steady state conditions. Chen and Hashimoto kinetic equation and a simplified Monod's model was employed to describe kinetics of POME anaerobic digestion at organic loading rates in the range of 0.88–34.73 g COD/l day. The hydraulic retention times (HRT) ranged between 1 and 6 days. Throughout the experiment, the removal efficiency of COD was between 80.6 and 98.6%. The methane production rate was between 0.287 and 0.348 l CH4/g CODremoved day. Biokinetic coefficients; apparent half-velocity constant, A, half-velocity constant, Ks, maximum specific microbial growth rate, μm, methane yield constant, YM, and growth yield constant, Yx, were evaluated. The apparent rate constants, K, calculated by simplified Monod model were in the range of 2.9–7.4 l CH4/g COD day. At different influent COD concentrations, K values showed a linear relationship with variations of VSS content of the reactor.

Keywords
Anaerobic digestion; UASFF; POME; Methane; Monod model; Chen and Hashimoto equation
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Kinetic evaluation of palm oil mill effluent digestion in a high rate up-flow anaerobic sludge fixed film bioreactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 5, May 2006, Pages 1038–1046
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us