Photofermentative production of hydrogen from organic acids by the purple sulfur bacterium Thiocapsa roseopersicina

Nyilasi, Andrea and Molnos, Éva and Lányi, Szabolcs and Nagy, Iosif and Rákhely, Gábor and Kovács, Kornél Lajos (2013) Photofermentative production of hydrogen from organic acids by the purple sulfur bacterium Thiocapsa roseopersicina. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38 (14). pp. 5535-5544. ISSN 0360-3199

Text NyilasiIntJHE.pdf Restricted to Repository staff only Download (1MB) | Request a copy

Abstract

A mutant strain of the anaerobic purple sulfur bacterium Thiocapsa roseopersicina, containing only nitrogenase as a functionally active enzyme for H2 generation was utilized to study the production of H2 from organic acids (acetate, pyruvate and succinate). Two types of potential substrates for H2 production, thiosulfate and salts of various organic acids, were compared under photoheterotrophic growth conditions. Thiosulfate proved to be the preferred electron donor for T. roseopersicina; the consumption of organic acids became pronounced only following depletion of the thiosulfate supply. The system is suitable for the generation of H2 from effluents of heterotrophic dark fermentation processes or waste streams rich in inorganic reduced sulfur compounds and/or simple organic acids. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Actions (login required)

Edit Item