Anode microbial communities produced by changing from microbial fuel cell to microbial electrolysis cell operation using two different wastewaters
AuthorsKiely, Patrick D.
Call, Douglas F.
Selembo, Priscilla A.
Regan, John M.
Logan, Bruce E.
KAUST Grant NumberKUS-i1-003-13
Permanent link to this recordhttp://hdl.handle.net/10754/597577
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AbstractConditions in microbial fuel cells (MFCs) differ from those in microbial electrolysis cells (MECs) due to the intrusion of oxygen through the cathode and the release of H2 gas into solution. Based on 16S rRNA gene clone libraries, anode communities in reactors fed acetic acid decreased in species richness and diversity, and increased in numbers of Geobacter sulfurreducens, when reactors were shifted from MFCs to MECs. With a complex source of organic matter (potato wastewater), the proportion of Geobacteraceae remained constant when MFCs were converted into MECs, but the percentage of clones belonging to G. sulfurreducens decreased and the percentage of G. metallireducens clones increased. A dairy manure wastewater-fed MFC produced little power, and had more diverse microbial communities, but did not generate current in an MEC. These results show changes in Geobacter species in response to the MEC environment and that higher species diversity is not correlated with current. © 2010 Elsevier Ltd.
CitationKiely PD, Cusick R, Call DF, Selembo PA, Regan JM, et al. (2011) Anode microbial communities produced by changing from microbial fuel cell to microbial electrolysis cell operation using two different wastewaters. Bioresource Technology 102: 388–394. Available: http://dx.doi.org/10.1016/j.biortech.2010.05.019.
SponsorsThis research was supported by Air Products and Chemicals, Inc., Award KUS-i1-003-13 from the King Abdullah University of Science and Technology (KAUST), the National Renewable Energy Laboratory (RFH-7-77623-01), and a National Science Foundation Graduate Research Fellowship and the National Water Research Institute Ronald B. Linsky Fellowship (to DFC).
CollectionsPublications Acknowledging KAUST Support
- Change in microbial communities in acetate- and glucose-fed microbial fuel cells in the presence of light.
- Authors: Xing D, Cheng S, Regan JM, Logan BE
- Issue date: 2009 Sep 15
- Comparison of anode bacterial communities and performance in microbial fuel cells with different electron donors.
- Authors: Jung S, Regan JM
- Issue date: 2007 Nov
- Pre-acclimation of a wastewater inoculum to cellulose in an aqueous-cathode MEC improves power generation in air-cathode MFCs.
- Authors: Cheng S, Kiely P, Logan BE
- Issue date: 2011 Jan
- Pyrosequencing reveals highly diverse microbial communities in microbial electrolysis cells involved in enhanced H2 production from waste activated sludge.
- Authors: Lu L, Xing D, Ren N
- Issue date: 2012 May 1
- Electricity-assisted biological hydrogen production from acetate by Geobacter sulfurreducens.
- Authors: Geelhoed JS, Stams AJ
- Issue date: 2011 Jan 15