title: Electricity generation and microbial community changes in microbial fuel cells packed with different anodic materials.
abstract: Four materials, carbon felt cube (CFC), granular graphite (GG), granular activated carbon (GAC) and granular semicoke (GS) were tested as packed anodic materials to seek a potentially practical material for microbial fuel cells (MFCs). The microbial community and its correlation with the electricity generation performance of MFCs were explored. The maximum power density was found in GAC, followed by CFC, GG and GS. In GAC and CFC packed MFCs, Geobacter was the dominating genus, while Azospira was the most populous group in GG. Results further indicated that GAC was the most favorable for Geobacter adherence and growth, and the maximum power densities had positive correlation with the total biomass and the relative abundance of Geobacter, but without apparent correlation with the microbial diversity. Due to the low content of Geobacter in GS, power generated in this system may be attributed to other microorganisms such as Synergistes, Bacteroidetes and Castellaniella.
authors: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
authors: Yanmei
authors: Y
authors: Sun
authors: Jincheng
authors: J
authors: Wei
authors: Peng
authors: P
authors: Liang
authors: Xia
authors: X
authors: Huang
mesh_terms: D000465:Algorithms; D001419:Bacteria / Q000254:growth & development; D001674:Bioelectric Energy Sources; D018441:Biofilms / Q000254:growth & development; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D014644:Genetic Variation; D045302:Geobacter / Q000235:genetics* / Q000378:metabolism; D015233:Models, Statistical; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000378:metabolism; D013499:Surface Properties
chemical_list: D012336:RNA, Ribosomal, 16S; D002244:Carbon