Microbial population and functional dynamics associated with surface potential and carbon metabolism.

ABSTRACT: Microbial extracellular electron transfer (EET) to solid surfaces is an important reaction for metal reduction occurring in various anoxic environments. However, it is challenging to accurately characterize EET-active microbial communities and each member's contribution to EET reactions because of changes in composition and concentrations of electron donors and solid-phase acceptors. Here, we used bioelectrochemical systems to systematically evaluate the synergistic effects of carbon source and surface redox potential on EET-active microbial community development, metabolic networks and overall electron transfer rates. The results indicate that faster biocatalytic rates were observed under electropositive electrode surface potential conditions, and under fatty acid-fed conditions. Temporal

SUBMITTER: Ishii S 

PROVIDER: S-EPMC3996694 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature