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

Andrea Nyilasi, Éva Molnos, Szabolcs Lányi, Iosif Nagy, G. Rákhely, K. Kovács

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)5535-5544
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number14
DOIs
Publication statusPublished - May 10 2013

Fingerprint

Organic acids
bacteria
Bacteria
sulfur
Sulfur
Hydrogen
acids
hydrogen
pyruvates
sulfur compounds
fermentation
Sulfur compounds
effluents
Fermentation
enzymes
Effluents
acetates
depletion
Enzymes
Salts

Keywords

  • Biohydrogen
  • Nitrogenase
  • Organic acid
  • Photofermentation
  • Thiocapsa roseopersicina

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Photofermentative production of hydrogen from organic acids by the purple sulfur bacterium Thiocapsa roseopersicina. / Nyilasi, Andrea; Molnos, Éva; Lányi, Szabolcs; Nagy, Iosif; Rákhely, G.; Kovács, K.

In: International Journal of Hydrogen Energy, Vol. 38, No. 14, 10.05.2013, p. 5535-5544.

Research output: Contribution to journalArticle

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