Kinetic modeling of batch photofermentation hydrogen gas production by Rhodopseudomonas palustris PBUM001

Jamil, Z. and Annuar, M.S.M. and Ibrahim, S. and Vikineswary, S. (2012) Kinetic modeling of batch photofermentation hydrogen gas production by Rhodopseudomonas palustris PBUM001. Journal of Renewable and Sustainable Energy, 4 (4). ISSN 1941-7012

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Abstract

An indigenous purple non-sulfur bacteria Rhodopseudomonas palustris PBUM001 was used to produce hydrogen gas via batch photofermentation of palm oil mill effluent (POME). The photofermentation hydrogen production was carried out in a 5-l reactor (B. Braun Biostat ® B) with a working volume of 3.5 l (height: 39 cm and diameter: 16 cm) under anaerobic condition. The stirred tank reactor (STR) was conducted at temperature, 30 ± 2 °C; POME concentration, 100 (v/v); light intensity, 4.0 klux; pH 6, inoculum size, 10 (v/v); agitation rate, 250 rpm, and operated for 66 h. Two sets of experiments were run in STR (R1 and R2) and the data obtained were used for kinetic study of photofermentation hydrogen production. Unstructured models were used to describe the bacterial growth, substrate consumption, and hydrogen gas production by R. palustris PBUM001. The discrepancy between the proposed model and the experimental data in simulating hydrogen production from POME by R. palustris PBUM001 was measured by using residual sum of squares (RSS). Logistic model could be adopted to describe the kinetics of bacterial growth (RSS: 0.3039-0.2313) and the proposed model for substrate consumption agreed well with the experimental data obtained in this study as shown by its RSS value of 19.1319 and 26.8259 for R1 and R2, respectively. A modified Leudeking-Piret model was applied for the data fitting to determine the relationship between the cell growth and photofermentation hydrogen production (RSS: 1.3267-26.3741). © 2012 American Institute of Physics.

Item Type: Article
Additional Information: 079EM Times Cited:0 Cited References Count:32
Uncontrolled Keywords: Agitation rates, Anaerobic conditions, Bacterial growth, Data fittings, Experimental data, Hydrogen gas, Inoculum size, Kinetic modeling, Kinetic study, Light intensity, Logistic models, Palm oil mill effluents, Photo fermentation, Residual sum of squares, Rhodopseudomonas palustris, Stirred tank reactors, Unstructured model, Working volume, Growth kinetics, Hydrogen, Kinetic theory, Kinetics, Vegetable oils, Hydrogen production
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 02 Apr 2014 01:49
Last Modified: 03 Jul 2017 08:40
URI: http://eprints.um.edu.my/id/eprint/9430

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