Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells

Handle URI:
http://hdl.handle.net/10754/600025
Title:
Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells
Authors:
Ren, Zhiyong; Ramasamy, Ramaraja P.; Cloud-Owen, Susan Red; Yan, Hengjing; Mench, Matthew M.; Regan, John M.
Abstract:
The relationship between anode microbial characteristics and electrochemical parameters in microbial fuel cells (MFCs) was analyzed by time-course sampling of parallel single-bottle MFCs operated under identical conditions. While voltage stabilized within 4. days, anode biofilms continued growing during the six-week operation. Viable cell density increased asymptotically, but membrane-compromised cells accumulated steadily from only 9% of total cells on day 3 to 52% at 6. weeks. Electrochemical performance followed the viable cell trend, with a positive correlation for power density and an inverse correlation for anode charge transfer resistance. The biofilm architecture shifted from rod-shaped, dispersed cells to more filamentous structures, with the continuous detection of Geobacter sulfurreducens-like 16S rRNA fragments throughout operation and the emergence of a community member related to a known phenazine-producing Pseudomonas species. A drop in cathode open circuit potential between weeks two and three suggested that uncontrolled biofilm growth on the cathode deleteriously affects system performance. © 2010 Elsevier Ltd.
Citation:
Ren Z, Ramasamy RP, Cloud-Owen SR, Yan H, Mench MM, et al. (2011) Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells. Bioresource Technology 102: 416–421. Available: http://dx.doi.org/10.1016/j.biortech.2010.06.003.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Jan-2011
DOI:
10.1016/j.biortech.2010.06.003
PubMed ID:
20591659
Type:
Article
ISSN:
0960-8524
Sponsors:
This research was supported by National Science Foundation Grant CBET-0834033, a seed grant from the MRSEC program at Penn State (National Science Foundation Grant DMR-0820404), and 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, Zhiyongen
dc.contributor.authorRamasamy, Ramaraja P.en
dc.contributor.authorCloud-Owen, Susan Reden
dc.contributor.authorYan, Hengjingen
dc.contributor.authorMench, Matthew M.en
dc.contributor.authorRegan, John M.en
dc.date.accessioned2016-02-28T06:34:34Zen
dc.date.available2016-02-28T06:34:34Zen
dc.date.issued2011-01en
dc.identifier.citationRen Z, Ramasamy RP, Cloud-Owen SR, Yan H, Mench MM, et al. (2011) Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells. Bioresource Technology 102: 416–421. Available: http://dx.doi.org/10.1016/j.biortech.2010.06.003.en
dc.identifier.issn0960-8524en
dc.identifier.pmid20591659en
dc.identifier.doi10.1016/j.biortech.2010.06.003en
dc.identifier.urihttp://hdl.handle.net/10754/600025en
dc.description.abstractThe relationship between anode microbial characteristics and electrochemical parameters in microbial fuel cells (MFCs) was analyzed by time-course sampling of parallel single-bottle MFCs operated under identical conditions. While voltage stabilized within 4. days, anode biofilms continued growing during the six-week operation. Viable cell density increased asymptotically, but membrane-compromised cells accumulated steadily from only 9% of total cells on day 3 to 52% at 6. weeks. Electrochemical performance followed the viable cell trend, with a positive correlation for power density and an inverse correlation for anode charge transfer resistance. The biofilm architecture shifted from rod-shaped, dispersed cells to more filamentous structures, with the continuous detection of Geobacter sulfurreducens-like 16S rRNA fragments throughout operation and the emergence of a community member related to a known phenazine-producing Pseudomonas species. A drop in cathode open circuit potential between weeks two and three suggested that uncontrolled biofilm growth on the cathode deleteriously affects system performance. © 2010 Elsevier Ltd.en
dc.description.sponsorshipThis research was supported by National Science Foundation Grant CBET-0834033, a seed grant from the MRSEC program at Penn State (National Science Foundation Grant DMR-0820404), and Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectBiofilmen
dc.subjectElectricityen
dc.subjectElectrochemical impedance spectroscopyen
dc.subjectMicrobial fuel cellen
dc.titleTime-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cellsen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
dc.contributor.institutionUniversity of Colorado at Denver, Denver, United Statesen
kaust.grant.numberKUS-I1-003-13en

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