Anode microbial communities produced by changing from microbial fuel cell to microbial electrolysis cell operation using two different wastewaters
Type
ArticleAuthors
Kiely, Patrick D.Cusick, Roland
Call, Douglas F.
Selembo, Priscilla A.
Regan, John M.
Logan, Bruce E.
KAUST Grant Number
KUS-i1-003-13Date
2011-01Permanent link to this record
http://hdl.handle.net/10754/597577
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Conditions 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.Citation
Kiely 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.Sponsors
This 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).Publisher
Elsevier BVJournal
Bioresource TechnologyPubMed ID
20554197ae974a485f413a2113503eed53cd6c53
10.1016/j.biortech.2010.05.019
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