Saline catholytes as alternatives to phosphate buffers in microbial fuel cells

Handle URI:
http://hdl.handle.net/10754/599547
Title:
Saline catholytes as alternatives to phosphate buffers in microbial fuel cells
Authors:
Ahn, Yongtae; Logan, Bruce E.
Abstract:
Highly saline solutions were examined as alternatives to chemical buffers in microbial fuel cells (MFCs). The performance of two-chamber MFCs with different concentrations of saline solutions in the cathode chamber was compared to those with a buffered catholyte (50mM PBS). The use of a NaCl catholyte improved the CE to 43-60% (28% with no membrane) due to a reduction in oxygen transfer into the anolyte. The saline catholyte also reduced the membrane and solution resistance to 23Ω (41Ω without a membrane). The maximum power density of 491mW/m2 (240mM NaCl) was only 17% less than the MFC with 50mM PBS. The decrease in power output with highest salinity was due to reduced proton transfer due to the ion exchange membrane, and pH changes in the two solutions. These results show that MFC performance can be improved by using a saline catholyte without pH control. © 2013 Elsevier Ltd.
Citation:
Ahn Y, Logan BE (2013) Saline catholytes as alternatives to phosphate buffers in microbial fuel cells. Bioresource Technology 132: 436–439. Available: http://dx.doi.org/10.1016/j.biortech.2013.01.113.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Mar-2013
DOI:
10.1016/j.biortech.2013.01.113
PubMed ID:
23433978
Type:
Article
ISSN:
0960-8524
Sponsors:
The research reported here was supported by 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.authorAhn, Yongtaeen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T05:53:09Zen
dc.date.available2016-02-28T05:53:09Zen
dc.date.issued2013-03en
dc.identifier.citationAhn Y, Logan BE (2013) Saline catholytes as alternatives to phosphate buffers in microbial fuel cells. Bioresource Technology 132: 436–439. Available: http://dx.doi.org/10.1016/j.biortech.2013.01.113.en
dc.identifier.issn0960-8524en
dc.identifier.pmid23433978en
dc.identifier.doi10.1016/j.biortech.2013.01.113en
dc.identifier.urihttp://hdl.handle.net/10754/599547en
dc.description.abstractHighly saline solutions were examined as alternatives to chemical buffers in microbial fuel cells (MFCs). The performance of two-chamber MFCs with different concentrations of saline solutions in the cathode chamber was compared to those with a buffered catholyte (50mM PBS). The use of a NaCl catholyte improved the CE to 43-60% (28% with no membrane) due to a reduction in oxygen transfer into the anolyte. The saline catholyte also reduced the membrane and solution resistance to 23Ω (41Ω without a membrane). The maximum power density of 491mW/m2 (240mM NaCl) was only 17% less than the MFC with 50mM PBS. The decrease in power output with highest salinity was due to reduced proton transfer due to the ion exchange membrane, and pH changes in the two solutions. These results show that MFC performance can be improved by using a saline catholyte without pH control. © 2013 Elsevier Ltd.en
dc.description.sponsorshipThe research reported here was supported by the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).en
dc.publisherElsevier BVen
dc.subjectBufferen
dc.subjectIon exchange membraneen
dc.subjectMicrobial fuel cellen
dc.subjectSodium chlorideen
dc.titleSaline catholytes as alternatives to phosphate buffers in microbial fuel cellsen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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