title: Cost-effective copper removal by electrosorption powered by microbial fuel cells.
abstract: This work studied a cost-effective electrosorption that driven by microbial fuel cells (MFC-sorption) to remove Cu(2+) from wastewater without an external energy supply. The impact factors, adsorption isotherms and kinetics of the novel process were investigated. It indicated that a low electrolyte concentration and a high solution pH could enhance the Cu(2+) removal efficiency, while the adsorption capacity increased with the increase of numbers of MFCs in series and the initial Cu(2+) concentration. The adsorption isotherms study indicated that the monolayer adsorption in MFC-sorption was dominant. The kinetics study suggested the increase of initial Cu(2+) concentration could enhance the initial adsorption rate. The electrode characterizations verified the existence of Cu2O and Cu on the electrode surface of active carbon fibers (ACFs), suggesting that MFC-sorption was not only an adsorption process, but also a redox reaction process.
authors.affiliation: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin, China.|Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy and Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.affiliation: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin, China. zhoumh@nankai.edu.cn.|Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy and Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China. zhoumh@nankai.edu.cn.
authors.forename: Minghua
authors.initials: M
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin, China.|Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy and Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
authors.forename: Youshuang
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin, China.|Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy and Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
authors.forename: Weilu
authors.initials: W
authors.lastname: Yang
mesh_terms: D001674:Bioelectric Energy Sources; D003300:Copper / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics
chemical_list: D003300:Copper
keywords: Adsorption isotherms and kinetics; Copper removal; Electrosorption; Microbial fuel cells; Redox reaction