Effect of Set Potential on Hexavalent Chromium Reduction and Electricity Generation from Biocathode Microbial Fuel Cells

Handle URI:
http://hdl.handle.net/10754/598058
Title:
Effect of Set Potential on Hexavalent Chromium Reduction and Electricity Generation from Biocathode Microbial Fuel Cells
Authors:
Huang, Liping; Chai, Xiaolei; Chen, Guohua; Logan, Bruce E
Abstract:
Setting a biocathode potential at ?300 mV improved the subsequent performance of an MFC for Cr(VI) reduction compared to a control (no set potential). With this set potential, the startup time was reduced to 19 days, the reduction of Cr(VI) was improved to 19.7 mg/L d, and the maximum power density was increased to 6.4 W/m3 compared to the control (26 days, 14.0 mg/L d and 4.1 W/m3). Set potentials of ?150 mV and ?300 mV also improved system performance and led to similarly higher utilization of metabolic energy gained (PMEG) than set potentials of +200 mV and ?450 mV. We observed putative pili at ?150 and ?300 mV potentials, and aggregated precipitates on bacterial surfaces in both poised and nonpoised controls. These tests show that there are optimal potentials that can be set for developing a Cr(VI) biocathode. © 2011 American Chemical Society.
Citation:
Huang L, Chai X, Chen G, Logan BE (2011) Effect of Set Potential on Hexavalent Chromium Reduction and Electricity Generation from Biocathode Microbial Fuel Cells. Environ Sci Technol 45: 5025–5031. Available: http://dx.doi.org/10.1021/es103875d.
Publisher:
American Chemical Society (ACS)
Journal:
Environmental Science & Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Jun-2011
DOI:
10.1021/es103875d
PubMed ID:
21528902
Type:
Article
ISSN:
0013-936X; 1520-5851
Sponsors:
We gratefully acknowledge financial support from the Natural Science Foundation of China (No. 21077017), Program for Changjiang Scholars and Innovative Research Team in University (IRT0813), "Energy + X" (2008) key programme through Dalian University of Technology, and the support of the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHuang, Lipingen
dc.contributor.authorChai, Xiaoleien
dc.contributor.authorChen, Guohuaen
dc.contributor.authorLogan, Bruce Een
dc.date.accessioned2016-02-25T13:11:52Zen
dc.date.available2016-02-25T13:11:52Zen
dc.date.issued2011-06en
dc.identifier.citationHuang L, Chai X, Chen G, Logan BE (2011) Effect of Set Potential on Hexavalent Chromium Reduction and Electricity Generation from Biocathode Microbial Fuel Cells. Environ Sci Technol 45: 5025–5031. Available: http://dx.doi.org/10.1021/es103875d.en
dc.identifier.issn0013-936Xen
dc.identifier.issn1520-5851en
dc.identifier.pmid21528902en
dc.identifier.doi10.1021/es103875den
dc.identifier.urihttp://hdl.handle.net/10754/598058en
dc.description.abstractSetting a biocathode potential at ?300 mV improved the subsequent performance of an MFC for Cr(VI) reduction compared to a control (no set potential). With this set potential, the startup time was reduced to 19 days, the reduction of Cr(VI) was improved to 19.7 mg/L d, and the maximum power density was increased to 6.4 W/m3 compared to the control (26 days, 14.0 mg/L d and 4.1 W/m3). Set potentials of ?150 mV and ?300 mV also improved system performance and led to similarly higher utilization of metabolic energy gained (PMEG) than set potentials of +200 mV and ?450 mV. We observed putative pili at ?150 and ?300 mV potentials, and aggregated precipitates on bacterial surfaces in both poised and nonpoised controls. These tests show that there are optimal potentials that can be set for developing a Cr(VI) biocathode. © 2011 American Chemical Society.en
dc.description.sponsorshipWe gratefully acknowledge financial support from the Natural Science Foundation of China (No. 21077017), Program for Changjiang Scholars and Innovative Research Team in University (IRT0813), "Energy + X" (2008) key programme through Dalian University of Technology, and the support of the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleEffect of Set Potential on Hexavalent Chromium Reduction and Electricity Generation from Biocathode Microbial Fuel Cellsen
dc.typeArticleen
dc.identifier.journalEnvironmental Science & Technologyen
dc.contributor.institutionDalian University of Technology, Dalian, Chinaen
dc.contributor.institutionHong Kong University of Science and Technology, Hong Kong, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en

Related articles on PubMed

All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.