Phototropic H2 production by a newly isolated strain of Rhodopseudomonaspalustris |
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| Authors: | Maneewan Suwansaard Wanna Choorit Jill H. Zeilstra-Ryalls Poonsuk Prasertsan |
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| Affiliation: | (1) Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Songkhla, 90112, Thailand;(2) School of Agricultural Technology, Walailak University, Nakhonsithammarat, 80160, Thailand;(3) Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA; |
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| Abstract: | Rhodopseudomonas palustris TN1 was isolated from Songkhla Lake, Thailand. It phototrophically generates H2 from the predominant volatile fatty acids (VFAs) produced from microbial dark-fermentations of palm oil milling effluent; yields from 20 mM butyrate, acetate and propionate were 4.7, 2.5, and 1.7 mol H2 mol VFA−1 with light efficiencies of 1.8, 1, and 0.2%, respectively. Optimum conditions were pH 7 and 3000 lux, although production was reduced by only 33% at 1000 lux. CO2 evolution never exceeded 9 mmol mol VFA−1. |
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