Spray-on polyvinyl alcohol separators and impact on power production in air-cathode microbial fuel cells with different solution conductivities

Handle URI:
http://hdl.handle.net/10754/599700
Title:
Spray-on polyvinyl alcohol separators and impact on power production in air-cathode microbial fuel cells with different solution conductivities
Authors:
Hoskins, Daniel L.; Zhang, Xiaoyuan; Hickner, Michael A.; Logan, Bruce E.
Abstract:
© 2014 Elsevier Ltd. Separators are used to protect cathodes from biofouling and to avoid electrode short-circuiting, but they can adversely affect microbial fuel cell (MFC) performance. A spray method was used to apply a polyvinyl alcohol (PVA) separator to the cathode. Power densities were unaffected by the PVA separator (339 ± 29 mW/m2), compared to a control lacking a separator in a low conductivity solution (1mS/cm) similar to wastewater. Power was reduced with separators in solutions typical of laboratory tests (7-13 mS/cm), compared to separatorless controls. The PVA separator produced more power in a separator assembly (SEA) configuration (444 ± 8 mW/m2) in the 1mS/cm solution, but power was reduced if a PVA or wipe separator was used in higher conductivity solutions with either Pt or activated carbon catalysts. Spray and cast PVA separators performed similarly, but the spray method is preferred as it was easier to apply and use.
Citation:
Hoskins DL, Zhang X, Hickner MA, Logan BE (2014) Spray-on polyvinyl alcohol separators and impact on power production in air-cathode microbial fuel cells with different solution conductivities. Bioresource Technology 172: 156–161. Available: http://dx.doi.org/10.1016/j.biortech.2014.09.004.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-11-003-13
Issue Date:
Nov-2014
DOI:
10.1016/j.biortech.2014.09.004
PubMed ID:
25260178
Type:
Article
ISSN:
0960-8524
Sponsors:
This research was supported by the Strategic Environmental Research and Development Program (SERDP) and award KUS-11-003-13 from the King Abdullah University of Science and Technology (KAUST). The authors would like to thank Dr. Guang Chen for his expertise in the fabrication of PVA membranes.
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHoskins, Daniel L.en
dc.contributor.authorZhang, Xiaoyuanen
dc.contributor.authorHickner, Michael A.en
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T06:07:50Zen
dc.date.available2016-02-28T06:07:50Zen
dc.date.issued2014-11en
dc.identifier.citationHoskins DL, Zhang X, Hickner MA, Logan BE (2014) Spray-on polyvinyl alcohol separators and impact on power production in air-cathode microbial fuel cells with different solution conductivities. Bioresource Technology 172: 156–161. Available: http://dx.doi.org/10.1016/j.biortech.2014.09.004.en
dc.identifier.issn0960-8524en
dc.identifier.pmid25260178en
dc.identifier.doi10.1016/j.biortech.2014.09.004en
dc.identifier.urihttp://hdl.handle.net/10754/599700en
dc.description.abstract© 2014 Elsevier Ltd. Separators are used to protect cathodes from biofouling and to avoid electrode short-circuiting, but they can adversely affect microbial fuel cell (MFC) performance. A spray method was used to apply a polyvinyl alcohol (PVA) separator to the cathode. Power densities were unaffected by the PVA separator (339 ± 29 mW/m2), compared to a control lacking a separator in a low conductivity solution (1mS/cm) similar to wastewater. Power was reduced with separators in solutions typical of laboratory tests (7-13 mS/cm), compared to separatorless controls. The PVA separator produced more power in a separator assembly (SEA) configuration (444 ± 8 mW/m2) in the 1mS/cm solution, but power was reduced if a PVA or wipe separator was used in higher conductivity solutions with either Pt or activated carbon catalysts. Spray and cast PVA separators performed similarly, but the spray method is preferred as it was easier to apply and use.en
dc.description.sponsorshipThis research was supported by the Strategic Environmental Research and Development Program (SERDP) and award KUS-11-003-13 from the King Abdullah University of Science and Technology (KAUST). The authors would like to thank Dr. Guang Chen for his expertise in the fabrication of PVA membranes.en
dc.publisherElsevier BVen
dc.subjectBioelectricityen
dc.subjectBioelectrochemicalen
dc.subjectMicrobial fuel cellen
dc.subjectPolyvinyl alcoholen
dc.subjectSeparatorsen
dc.titleSpray-on polyvinyl alcohol separators and impact on power production in air-cathode microbial fuel cells with different solution conductivitiesen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
dc.contributor.institutionTsinghua University, Beijing, Chinaen
kaust.grant.numberKUS-11-003-13en

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