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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Acknowledgments
This work was financially supported by the Royal Golden Jubilee Ph.D. Program of the Thailand Research Fund, the Joint Graduate School of Energy and Environment of King Mongkut’s University of Technology Thonburi, Thailand, the Graduate School of Prince of Songkla University, Thailand, the Center for Environmental Microbiology established through the auspices of the Research Enhancement Initiative at Bowling Green State University, USA, and the National Science Foundation, USA (MCB-0921449; American Recovery and Reinvestment Act of 2009).
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Purpose of work
To investigate the potential of photosynthetic bacteria to ameliorate negative environmental impacts of palm oil milling in southern Thailand by using the fermentatively pretreated wastewaters as a medium for their growth and H2 production.
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Suwansaard, M., Choorit, W., Zeilstra-Ryalls, J.H. et al. Phototropic H2 production by a newly isolated strain of Rhodopseudomonas palustris . Biotechnol Lett 32, 1667–1671 (2010). https://doi.org/10.1007/s10529-010-0345-2
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DOI: https://doi.org/10.1007/s10529-010-0345-2