The effect of flow modes and electrode combinations on the performance of a multiple module microbial fuel cell installed at wastewater treatment plant

Handle URI:
http://hdl.handle.net/10754/623604
Title:
The effect of flow modes and electrode combinations on the performance of a multiple module microbial fuel cell installed at wastewater treatment plant
Authors:
He, Weihua; Wallack, Maxwell J.; Kim, Kyoung-Yeol; Zhang, Xiaoyuan; Yang, Wulin; Zhu, Xiuping; Feng, Yujie; Logan, Bruce E. ( 0000-0001-7478-8070 )
Abstract:
A larger (6.1 L) MFC stack made in a scalable configuration was constructed with four anode modules and three (two-sided) cathode modules, and tested at a wastewater treatment plant for performance in terms of chemical oxygen demand (COD) removal and power generation. Domestic wastewater was fed either in parallel (raw wastewater to each individual anode module) or series (sequentially through the chambers), with the flow direction either alternated every one or two days or kept fixed in a single direction over time. The largest impact on performance was the wastewater COD concentration, which greatly impacted power production, but did not affect the percentage of COD removal. With higher COD concentrations (∼500 mg L−1) and alternating flow conditions, power generation was primarily limited by the cathode specific area. In alternating flow operation, anode modules connected to two cathodes produced an average maximum power density of 6.0 ± 0.4 W m−3, which was 1.9 ± 0.2 times that obtained for anodes connected to a single cathode. In fixed flow operation, a large subsequent decrease in COD influent concentration greatly reduced power production independent of reactor operation in parallel or serial flow modes. Anode modules connected to two cathodes did not consistently produce more power than the anodes connected to a single cathode, indicating power production became limited by restricted anode performance at low CODs. Cyclic voltammetry and electrochemical impedance spectroscopy data supported restricted anode performance with low COD. These results demonstrate that maintaining power production of MFC stack requires higher influent and effluent COD concentrations. However, overall performance of the MFC in terms of COD removal was not affected by operational modes.
Citation:
He W, Wallack MJ, Kim K-Y, Zhang X, Yang W, et al. (2016) The effect of flow modes and electrode combinations on the performance of a multiple module microbial fuel cell installed at wastewater treatment plant. Water Research 105: 351–360. Available: http://dx.doi.org/10.1016/j.watres.2016.09.008.
Publisher:
Elsevier BV
Journal:
Water Research
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
13-Sep-2016
DOI:
10.1016/j.watres.2016.09.008
Type:
Article
ISSN:
0043-1354
Sponsors:
The authors thank David Jones for help with the manufacture of the reactor and analytical measurements. This research was supported by the Strategic Environmental Research and Development Program (SERDP), Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST), the National Natural Science Fund for Distinguished Young Scholars (Grant No. 51125033), the International Cooperating Project between China and European Union (Grant No. 2014DFE90110), National Natural Science Foundation of China (Grant No. 51408336, to X.Z.), and a scholarship (No. 201206120191) to W.H. from the China Scholarship Council (CSC).
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DC FieldValue Language
dc.contributor.authorHe, Weihuaen
dc.contributor.authorWallack, Maxwell J.en
dc.contributor.authorKim, Kyoung-Yeolen
dc.contributor.authorZhang, Xiaoyuanen
dc.contributor.authorYang, Wulinen
dc.contributor.authorZhu, Xiupingen
dc.contributor.authorFeng, Yujieen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2017-05-15T10:35:10Z-
dc.date.available2017-05-15T10:35:10Z-
dc.date.issued2016-09-13en
dc.identifier.citationHe W, Wallack MJ, Kim K-Y, Zhang X, Yang W, et al. (2016) The effect of flow modes and electrode combinations on the performance of a multiple module microbial fuel cell installed at wastewater treatment plant. Water Research 105: 351–360. Available: http://dx.doi.org/10.1016/j.watres.2016.09.008.en
dc.identifier.issn0043-1354en
dc.identifier.doi10.1016/j.watres.2016.09.008en
dc.identifier.urihttp://hdl.handle.net/10754/623604-
dc.description.abstractA larger (6.1 L) MFC stack made in a scalable configuration was constructed with four anode modules and three (two-sided) cathode modules, and tested at a wastewater treatment plant for performance in terms of chemical oxygen demand (COD) removal and power generation. Domestic wastewater was fed either in parallel (raw wastewater to each individual anode module) or series (sequentially through the chambers), with the flow direction either alternated every one or two days or kept fixed in a single direction over time. The largest impact on performance was the wastewater COD concentration, which greatly impacted power production, but did not affect the percentage of COD removal. With higher COD concentrations (∼500 mg L−1) and alternating flow conditions, power generation was primarily limited by the cathode specific area. In alternating flow operation, anode modules connected to two cathodes produced an average maximum power density of 6.0 ± 0.4 W m−3, which was 1.9 ± 0.2 times that obtained for anodes connected to a single cathode. In fixed flow operation, a large subsequent decrease in COD influent concentration greatly reduced power production independent of reactor operation in parallel or serial flow modes. Anode modules connected to two cathodes did not consistently produce more power than the anodes connected to a single cathode, indicating power production became limited by restricted anode performance at low CODs. Cyclic voltammetry and electrochemical impedance spectroscopy data supported restricted anode performance with low COD. These results demonstrate that maintaining power production of MFC stack requires higher influent and effluent COD concentrations. However, overall performance of the MFC in terms of COD removal was not affected by operational modes.en
dc.description.sponsorshipThe authors thank David Jones for help with the manufacture of the reactor and analytical measurements. This research was supported by the Strategic Environmental Research and Development Program (SERDP), Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST), the National Natural Science Fund for Distinguished Young Scholars (Grant No. 51125033), the International Cooperating Project between China and European Union (Grant No. 2014DFE90110), National Natural Science Foundation of China (Grant No. 51408336, to X.Z.), and a scholarship (No. 201206120191) to W.H. from the China Scholarship Council (CSC).en
dc.publisherElsevier BVen
dc.subjectAlternating flowen
dc.subjectDomestic wastewater treatmenten
dc.subjectElectrode combinationsen
dc.subjectMicrobial fuel cellen
dc.subjectMulti-module reactoren
dc.titleThe effect of flow modes and electrode combinations on the performance of a multiple module microbial fuel cell installed at wastewater treatment planten
dc.typeArticleen
dc.identifier.journalWater Researchen
dc.contributor.institutionState Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, PR Chinaen
dc.contributor.institutionDepartment of Civil & Environmental Engineering, Penn State University, 231Q Sackett Building, University Park, PA 16802, USAen
dc.contributor.institutionState Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR Chinaen
dc.contributor.institutionDepartment of Civil & Environmental Engineering, Louisiana State University, Baton Rouge, LA 16802, USAen
kaust.grant.numberKUS-I1-003-13en
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