Long-term performance of a 200 liter modularized microbial fuel cell system treating municipal wastewater: treatment, energy, and cost

dc.contributor.authorGe, Zhengen
dc.contributor.authorHe, Zhenen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2017-05-01T06:42:17Zen
dc.date.available2017-05-01T06:42:17Zen
dc.date.issued2016-02-04en
dc.description.abstractMicrobial fuel cells (MFCs) have been intensively studied at a bench scale and the further development of this technology requires system scaling up and understanding of their performance under non-laboratory conditions. In this study, a 200 L modularized MFC system consisting of 96 MFC modules was developed and operated in a local wastewater treatment plant for treating primary effluent. During more than 300 days' operation, the MFC system removed more than 75% of the total chemical oxygen demand and 90% of the suspended solids, despite significant fluctuations in treatment performance affected by wastewater quality and operational factors. It achieved 68% removal of ammonia nitrogen, but phosphorous and the nitrate accumulated due to nitrification needs further disposal. The frequency of the catholyte recirculation exerted a strong effect on the energy consumption of the MFC system. Through both parallel and serial electric connections, the MFC system generated power of ∼200 mW that was extracted by a power management system to drive a 60 W DC pump for catholyte recirculation. Over 60% of the material cost of the MFCs was due to the cation exchange membrane, and the capital cost of the MFC system could be comparable to that of small wastewater treatment facilities. The results of this study encourage the further development of MFC technology with reduced costs and improved performance towards sustainable wastewater treatment.en
dc.format.extent274-281en
dc.format.mimetypeapplication/pdfen
dc.identifierc6ew00020g.pdfen
dc.identifierc6ew00020g1.pdfen
dc.identifier.doihttps://doi.org/10.1039/c6ew00020gen
dc.identifier.eissn2053-1419en
dc.identifier.issn2053-1400en
dc.identifier.issue2en
dc.identifier.urihttp://hdl.handle.net/10919/77555en
dc.identifier.volume2en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.relation.ispartofRoyal Society of Chemistry Gold Open Access - 2016en
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unporteden
dc.rights.holderGe, Zhengen
dc.rights.holderHe, Zhenen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en
dc.titleLong-term performance of a 200 liter modularized microbial fuel cell system treating municipal wastewater: treatment, energy, and costen
dc.title.serialEnvironmental Science: Water Research & Technologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeDataseten
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