Electrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditions

Handle URI:
http://hdl.handle.net/10754/598140
Title:
Electrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditions
Authors:
Ren, Lijiao; Ahn, Yongtae; Hou, Huijie; Zhang, Fang; Logan, Bruce E.
Abstract:
Power production of four hydraulically connected microbial fuel cells (MFCs) was compared with the reactors operated using individual electrical circuits (individual), and when four anodes were wired together and connected to four cathodes all wired together (combined), in fed-batch or continuous flow conditions. Power production under these different conditions could not be made based on a single resistance, but instead required polarization tests to assess individual performance relative to the combined MFCs. Based on the power curves, power produced by the combined MFCs (2.12 ± 0.03 mW, 200 ω) was the same as the summed power (2.13 mW, 50 ω) produced by the four individual reactors in fed-batch mode. With continuous flow through the four MFCs, the maximum power (0.59 ± 0.01 mW) produced by the combined MFCs was slightly lower than the summed maximum power of the four individual reactors (0.68 ± 0.02 mW). There was a small parasitic current flow from adjacent anodes and cathodes, but overall performance was relatively unaffected. These findings demonstrate that optimal power production by reactors hydraulically and electrically connected can be predicted from performance by individual reactors. © 2013 Elsevier B.V. All rights reserved.
Citation:
Ren L, Ahn Y, Hou H, Zhang F, Logan BE (2014) Electrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditions. Journal of Power Sources 257: 454–460. Available: http://dx.doi.org/10.1016/j.jpowsour.2013.11.085.
Publisher:
Elsevier BV
Journal:
Journal of Power Sources
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Jul-2014
DOI:
10.1016/j.jpowsour.2013.11.085
Type:
Article
ISSN:
0378-7753
Sponsors:
The authors thank David Jones for help with the analytical measurements. This research is supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorRen, Lijiaoen
dc.contributor.authorAhn, Yongtaeen
dc.contributor.authorHou, Huijieen
dc.contributor.authorZhang, Fangen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:13:26Zen
dc.date.available2016-02-25T13:13:26Zen
dc.date.issued2014-07en
dc.identifier.citationRen L, Ahn Y, Hou H, Zhang F, Logan BE (2014) Electrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditions. Journal of Power Sources 257: 454–460. Available: http://dx.doi.org/10.1016/j.jpowsour.2013.11.085.en
dc.identifier.issn0378-7753en
dc.identifier.doi10.1016/j.jpowsour.2013.11.085en
dc.identifier.urihttp://hdl.handle.net/10754/598140en
dc.description.abstractPower production of four hydraulically connected microbial fuel cells (MFCs) was compared with the reactors operated using individual electrical circuits (individual), and when four anodes were wired together and connected to four cathodes all wired together (combined), in fed-batch or continuous flow conditions. Power production under these different conditions could not be made based on a single resistance, but instead required polarization tests to assess individual performance relative to the combined MFCs. Based on the power curves, power produced by the combined MFCs (2.12 ± 0.03 mW, 200 ω) was the same as the summed power (2.13 mW, 50 ω) produced by the four individual reactors in fed-batch mode. With continuous flow through the four MFCs, the maximum power (0.59 ± 0.01 mW) produced by the combined MFCs was slightly lower than the summed maximum power of the four individual reactors (0.68 ± 0.02 mW). There was a small parasitic current flow from adjacent anodes and cathodes, but overall performance was relatively unaffected. These findings demonstrate that optimal power production by reactors hydraulically and electrically connected can be predicted from performance by individual reactors. © 2013 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThe authors thank David Jones for help with the analytical measurements. This research is supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectContinuous flowen
dc.subjectElectrical connectionen
dc.subjectHydraulic connectionen
dc.subjectMicrobial fuel cellsen
dc.subjectMulti-electrodeen
dc.titleElectrochemical study of multi-electrode microbial fuel cells under fed-batch and continuous flow conditionsen
dc.typeArticleen
dc.identifier.journalJournal of Power Sourcesen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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