Effect of Substrate Conversion on Performance of Microbial Fuel Cells and Anodic Microbial Communities.

ABSTRACT: Performance of microbial fuel cells (MFCs) was monitored during the influent nutrient change from lactate to glucose/acetate/propionate and then to lactate. Meanwhile, anodic microbial communities were characterized by culture-independent molecular biotechnologies. Results showed MFC performance recovered rapidly when the lactate was replaced by one of its metabolic intermediates acetate, while it needed a longer time to recover if lactate substrate was converted to glucose/propionate or acetate to lactate. Secondary lactate feed enhanced the enrichment of bacterial populations dominating in first lactate feed. Electricity-producing bacteria, Geobacter spp., and beneficial helpers, Anaeromusa spp. and Pseudomonas spp., revived from a low abundance as lactate secondary

SUBMITTER: Zhao YG 

PROVIDER: S-EPMC5610400 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature