Pre-acclimation of a wastewater inoculum to cellulose in an aqueous–cathode MEC improves power generation in air–cathode MFCs

Handle URI:
http://hdl.handle.net/10754/599376
Title:
Pre-acclimation of a wastewater inoculum to cellulose in an aqueous–cathode MEC improves power generation in air–cathode MFCs
Authors:
Cheng, Shaoan; Kiely, Patrick; Logan, Bruce E.
Abstract:
Cellulose has been used in two-chamber microbial fuel cells (MFCs), but power densities were low. Higher power densities can be achieved in air-cathode MFCs using an inoculum from a two-chamber, aqueous-cathode microbial electrolysis cell (MEC). Air-cathode MFCs with this inoculum produced maximum power densities of 1070mWm-2 (cathode surface area) in single-chamber and 880mWm-2 in two-chamber MFCs. Coulombic efficiencies ranged from 25% to 50%, and COD removals were 50-70% based on total cellulose removals of 60-80%. Decreasing the reactor volume from 26 to 14mL (while maintaining constant electrode spacing) decreased power output by 66% (from 526 to 180mWm-2) due to a reduction in total mass of cellulose added. These results demonstrate that air-cathode MFCs can produce high power densities with cellulose following proper acclimation of the inoculum, and that organic loading rates are important for maximizing power densities from particulate substrates. © 2010 Elsevier Ltd.
Citation:
Cheng S, Kiely P, Logan BE (2011) Pre-acclimation of a wastewater inoculum to cellulose in an aqueous–cathode MEC improves power generation in air–cathode MFCs. Bioresource Technology 102: 367–371. Available: http://dx.doi.org/10.1016/j.biortech.2010.05.083.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Jan-2011
DOI:
10.1016/j.biortech.2010.05.083
PubMed ID:
20580223
Type:
Article
ISSN:
0960-8524
Sponsors:
The authors thank D.W. Jones for help with the analytical measurements. This research was supported by 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.authorCheng, Shaoanen
dc.contributor.authorKiely, Patricken
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T05:49:54Zen
dc.date.available2016-02-28T05:49:54Zen
dc.date.issued2011-01en
dc.identifier.citationCheng S, Kiely P, Logan BE (2011) Pre-acclimation of a wastewater inoculum to cellulose in an aqueous–cathode MEC improves power generation in air–cathode MFCs. Bioresource Technology 102: 367–371. Available: http://dx.doi.org/10.1016/j.biortech.2010.05.083.en
dc.identifier.issn0960-8524en
dc.identifier.pmid20580223en
dc.identifier.doi10.1016/j.biortech.2010.05.083en
dc.identifier.urihttp://hdl.handle.net/10754/599376en
dc.description.abstractCellulose has been used in two-chamber microbial fuel cells (MFCs), but power densities were low. Higher power densities can be achieved in air-cathode MFCs using an inoculum from a two-chamber, aqueous-cathode microbial electrolysis cell (MEC). Air-cathode MFCs with this inoculum produced maximum power densities of 1070mWm-2 (cathode surface area) in single-chamber and 880mWm-2 in two-chamber MFCs. Coulombic efficiencies ranged from 25% to 50%, and COD removals were 50-70% based on total cellulose removals of 60-80%. Decreasing the reactor volume from 26 to 14mL (while maintaining constant electrode spacing) decreased power output by 66% (from 526 to 180mWm-2) due to a reduction in total mass of cellulose added. These results demonstrate that air-cathode MFCs can produce high power densities with cellulose following proper acclimation of the inoculum, and that organic loading rates are important for maximizing power densities from particulate substrates. © 2010 Elsevier Ltd.en
dc.description.sponsorshipThe authors thank D.W. Jones for help with the analytical measurements. This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectCelluloseen
dc.subjectElectricity generationen
dc.subjectHydrolysisen
dc.subjectMicroaerophilicen
dc.subjectSingle-chamber MFCen
dc.titlePre-acclimation of a wastewater inoculum to cellulose in an aqueous–cathode MEC improves power generation in air–cathode MFCsen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionZhejiang University, Hangzhou, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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