Long-term cathode performance and the microbial communities that develop in microbial fuel cells fed different fermentation endproducts
KAUST Grant NumberKUS-I1-003-13
Permanent link to this recordhttp://hdl.handle.net/10754/598230
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AbstractTo better understand how cathode performance and substrates affected communities that evolved in these reactors over long periods of time, microbial fuel cells were operated for more than 1year with individual endproducts of lignocellulose fermentation (acetic acid, formic acid, lactic acid, succinic acid, or ethanol). Large variations in reactor performance were primarily due to the specific substrates, with power densities ranging from 835±21 to 62±1mW/m3. Cathodes performance degraded over time, as shown by an increase in power of up to 26% when the cathode biofilm was removed, and 118% using new cathodes. Communities that developed on the anodes included exoelectrogenic families, such as Rhodobacteraceae, Geobacteraceae, and Peptococcaceae, with the Deltaproteobacteria dominating most reactors. Pelobacter propionicus was the predominant member in reactors fed acetic acid, and it was abundant in several other MFCs. These results provide valuable insights into the effects of long-term MFC operation on reactor performance. © 2010 Elsevier Ltd.
CitationKiely PD, Rader G, Regan JM, Logan BE (2011) Long-term cathode performance and the microbial communities that develop in microbial fuel cells fed different fermentation endproducts. Bioresource Technology 102: 361–366. Available: http://dx.doi.org/10.1016/j.biortech.2010.05.017.
SponsorsThe authors would like to thank Elodie Lalaurette for assisting in the maintenance of the MFCs and Deb Grove at the Penn State Genomics Core Facility - University Park, PA, for DNA sequencing. This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST) and the National Renewable Energy Laboratory (RFH-7-77623-01).
CollectionsPublications Acknowledging KAUST Support
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- Anode microbial communities produced by changing from microbial fuel cell to microbial electrolysis cell operation using two different wastewaters.
- Authors: Kiely PD, Cusick R, Call DF, Selembo PA, Regan JM, Logan BE
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- Variations of electron flux and microbial community in air-cathode microbial fuel cells fed with different substrates.
- Authors: Yu J, Park Y, Cho H, Chun J, Seon J, Cho S, Lee T
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- Community analysis of biofilms on flame-oxidized stainless steel anodes in microbial fuel cells fed with different substrates.
- Authors: Eyiuche NJ, Asakawa S, Yamashita T, Ikeguchi A, Kitamura Y, Yokoyama H
- Issue date: 2017 Jun 29