Using cathode spacers to minimize reactor size in air cathode microbial fuel cells

Handle URI:
http://hdl.handle.net/10754/600149
Title:
Using cathode spacers to minimize reactor size in air cathode microbial fuel cells
Authors:
Yang, Qiao; Feng, Yujie; Logan, Bruce E.
Abstract:
Scaling up microbial fuel cells (MFCs) will require more compact reactor designs. Spacers can be used to minimize the reactor size without adversely affecting performance. A single 1.5mm expanded plastic spacer (S1.5) produced a maximum power density (973±26mWm -2) that was similar to that of an MFC with the cathode exposed directly to air (no spacer). However, a very thin spacer (1.3mm) reduced power by 33%. Completely covering the air cathode with a solid plate did not eliminate power generation, indicating oxygen leakage into the reactor. The S1.5 spacer slightly increased columbic efficiencies (from 20% to 24%) as a result of reduced oxygen transfer into the system. Based on operating conditions (1000ς, CE=20%), it was estimated that 0.9Lh -1 of air would be needed for 1m 2 of cathode area suggesting active air flow may be needed for larger scale MFCs. © 2012 Elsevier Ltd.
Citation:
Yang Q, Feng Y, Logan BE (2012) Using cathode spacers to minimize reactor size in air cathode microbial fuel cells. Bioresource Technology 110: 273–277. Available: http://dx.doi.org/10.1016/j.biortech.2012.01.121.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Apr-2012
DOI:
10.1016/j.biortech.2012.01.121
PubMed ID:
22342583
Type:
Article
ISSN:
0960-8524
Sponsors:
This research was supported by the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13) and the State Key Laboratory of Urban Water Resource & Environment, Harbin Institute of Technology (2010DX08), National Creative Research Group of Natural Science Foundation of China (50821002), National Science Fund for Distinguished Young Scholars (51125033) and a scholarship to Q.Y. from the china scholarship council (CSC).
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Qiaoen
dc.contributor.authorFeng, Yujieen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T06:43:45Zen
dc.date.available2016-02-28T06:43:45Zen
dc.date.issued2012-04en
dc.identifier.citationYang Q, Feng Y, Logan BE (2012) Using cathode spacers to minimize reactor size in air cathode microbial fuel cells. Bioresource Technology 110: 273–277. Available: http://dx.doi.org/10.1016/j.biortech.2012.01.121.en
dc.identifier.issn0960-8524en
dc.identifier.pmid22342583en
dc.identifier.doi10.1016/j.biortech.2012.01.121en
dc.identifier.urihttp://hdl.handle.net/10754/600149en
dc.description.abstractScaling up microbial fuel cells (MFCs) will require more compact reactor designs. Spacers can be used to minimize the reactor size without adversely affecting performance. A single 1.5mm expanded plastic spacer (S1.5) produced a maximum power density (973±26mWm -2) that was similar to that of an MFC with the cathode exposed directly to air (no spacer). However, a very thin spacer (1.3mm) reduced power by 33%. Completely covering the air cathode with a solid plate did not eliminate power generation, indicating oxygen leakage into the reactor. The S1.5 spacer slightly increased columbic efficiencies (from 20% to 24%) as a result of reduced oxygen transfer into the system. Based on operating conditions (1000ς, CE=20%), it was estimated that 0.9Lh -1 of air would be needed for 1m 2 of cathode area suggesting active air flow may be needed for larger scale MFCs. © 2012 Elsevier Ltd.en
dc.description.sponsorshipThis research was supported by the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13) and the State Key Laboratory of Urban Water Resource & Environment, Harbin Institute of Technology (2010DX08), National Creative Research Group of Natural Science Foundation of China (50821002), National Science Fund for Distinguished Young Scholars (51125033) and a scholarship to Q.Y. from the china scholarship council (CSC).en
dc.publisherElsevier BVen
dc.subjectMicrobial fuel cellen
dc.subjectOxygen demanden
dc.subjectScale upen
dc.subjectSpaceren
dc.titleUsing cathode spacers to minimize reactor size in air cathode microbial fuel cellsen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionState Key Laboratory of Urban Water Resource and Environment, Harbin, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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