Bacterial community shift and incurred performance in response to in situ microbial self-assembly graphene and polarity reversion in microbial fuel cell. (October 2017)

• Record Type: Journal Article
• Authors: Chen, Junfeng; Zhang, Lihua; Hu, Yongyou; Huang, Wantang; Niu, Zhuyu; Sun, Jian
• Is Part Of: Bioresource technology. Volume 241(2017)
• Page Start: 220
• Page End: 227
• Publication Date: 2017-10
• Subjects: Bacterial community shift -- Microbial fuel cell (MFC) -- Exoelectrogens -- Microbial-induced reduction -- Polarity reversion; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.05.123
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: GM-BE was prepared by microbial self-assembly graphene and polarity reversion. Bacterial community shift of GM-BE in MFC was illustrated. Firmicutes and Proteobacteria were dominant bacteria in GM-BA/GM-BC respectively. MFC performance separately composed by GM-BA and GM-BC were improved. Abstract: In this work, bacterial community shift and incurred performance of graphene modified bioelectrode (GM-BE) in microbial fuel cell (MFC) were illustrated by high throughput sequencing technology and electrochemical analysis. The results showed that Firmicutes occupied 48.75% in graphene modified bioanode (GM-BA), while Proteobacteria occupied 62.99% in graphene modified biocathode (GM-BC), both were dominant bacteria in phylum level respectively. Typical exoelectrogens, including Geobacter, Clostridium, Pseudomonas, Geothrix and Hydrogenophaga, were counted 26.66% and 17.53% in GM-BA and GM-BC. GM-BE was tended to decrease the bacterial diversity and enrich the dominant species. Because of the enrichment of exoelectrogens and excellent electrical conductivity of graphene, the maximum power density of MFC with GM-BA and GM-BC increased 33.1% and 21.6% respectively, and the transfer resistance decreased 83.8% and 73.6% compared with blank bioelectrode. This study aimed to enrich the microbial study in MFC and broaden the development and application for bioelectrode.