Establishing a core microbiome in acetate-fed microbial fuel cells |
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Authors: | Keaton Larson Lesnik Hong Liu |
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Institution: | 1. Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR, 97333, USA
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Abstract: | Establishing a core microbiome is the first step in understanding and subsequently optimizing microbial interactions in anodic biofilms of microbial fuel cells (MFCs) for increased power, efficiency, and decreased start-up times. In the present study, we used 454 pyrosequencing to demonstrate that a core anodic community would consistently emerge over a period of 4 years given similar conditions. The development and variation across reactor designs of these communities was also explored. The core members present in all high-power generating biofilms were Geobacter, Aminiphilus, Sedimentibacter, Acetoanaerobium, and Spirochaeta, accounting for 72?±?9 % of all genera. Aminiphilus spp., member of the Synergistetes phylum was present at higher abundances than previously reported in any other ecological studies. Results suggest a stable core microbiome in acetate-fed MFCs on both phylogenetic and functional levels. |
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