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Development of simplified anaerobic digestion models (SADM's) for studying anaerobic biodegradability and kinetics of complex biomass

Momoh, YOL, Anyata, BU and Saroj, DP (2013) Development of simplified anaerobic digestion models (SADM's) for studying anaerobic biodegradability and kinetics of complex biomass Biochemical Engineering Journal, 79. pp. 84-93.

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Abstract

The anaerobic co-digestion of cow manure and waste paper at ambient temperature condition was observed to be optimized at a mix proportion of 75:25 respectively. The development and testing of a set of simplified anaerobic digestion models (SADM's) for this mixture revealed that the Hill's based biogas yield rate model was most appropriate in describing the kinetics of biogas production. Parameter estimation using non-linear regression revealed that the half saturation constants expressed as acidified substrate and volatile solids equivalents were 0.228. g/L and 5.340. g. VS/L respectively, and the maximum specific biogas yield rate and biodegradability were 2.2. mL/g. VS/day and 0.313 respectively. The coefficients ". n" and ". m" indicative of acidogenic bacterial adaptation for degradation and acetogenic/methanogenic bacterial cooperativity were estimated to be 1.360 and 2.738 respectively, while hydrolysis/acidogenesis was considered the rate limiting step. The need of bacterial adaptation may be an important factor to consider during anaerobic modelling of complex biomass. © 2013 Elsevier B.V.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Momoh, YOLUNSPECIFIEDUNSPECIFIED
Anyata, BUUNSPECIFIEDUNSPECIFIED
Saroj, DPUNSPECIFIEDUNSPECIFIED
Date : 15 October 2013
Identification Number : 10.1016/j.bej.2013.06.018
Additional Information : NOTICE: this is the author’s version of a work that was accepted for publication in Biochemical Engineering Journal. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Biochemical Engineering Journal, 79, ), October 2013, DOI 10.1016/j.bej.2013.06.018.
Depositing User : Symplectic Elements
Date Deposited : 27 Mar 2014 14:33
Last Modified : 09 Jun 2014 13:46
URI: http://epubs.surrey.ac.uk/id/eprint/790066

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