A variety of hydrogenotrophic enrichment cultures catalyse cathodic reactions.

ABSTRACT: Biocathodes where living microorganisms catalyse reduction of CO₂ can potentially be used to produce valuable chemicals. Microorganisms harbouring hydrogenases may play a key role for biocathode performance since H₂ generated on the electrode surface can act as an electron donor for CO₂ reduction. In this study, the possibility of catalysing cathodic reactions by hydrogenotrophic methanogens, acetogens, sulfate-reducers, denitrifiers, and acetotrophic methanogens was investigated. The cultures were enriched from an activated sludge inoculum and performed the expected metabolic functions. All enrichments formed distinct microbial communities depending on their electron donor and electron acceptor. When the cultures were added to an electrochemical cell, line

SUBMITTER: Saheb-Alam S 

PROVIDER: S-EPMC6382808 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature