title: Increasing efficiencies of microbial fuel cells for collaborative treatment of copper and organic wastewater by designing reactor and selecting operating parameters.
abstract: Organic matters and copper ions can be collaboratively removed from wastewater using a microbial fuel cell (MFC). High collaborative efficiencies for both organic matter and copper ions removal have not been achieved yet in previous studies. We demonstrate here that high collaborative efficiencies can be achieved by designing reactor construction and selecting operational parameters based on the results of linear sweep voltammetry (LSV). When the MFC was constructed as 1:2 volume ratio of anode to cathode chamber and operated at optimal conditions, 83% COD removal and 87% copper ion removal were obtained at the same time. In addition, the Cu-MFC also performed a high coulombic efficiency (CE) of 89% for organic treatment, a cathodic efficiency of 80% for copper ion removal, and a maximum power density of 2.0 W/m(2).
authors.affiliation: State Key Lab of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China. Electronic address: shaoancheng@zju.edu.cn.
authors.forename: Shao-An
authors.initials: SA
authors.lastname: Cheng
authors.affiliation: State Key Lab of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China; Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
authors.forename: Bai-Shi
authors.initials: BS
authors.lastname: Wang
authors.affiliation: Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China. Electronic address: wang.yunhai@mail.xjtu.edu.cn.
authors.forename: Yun-Hai
authors.initials: YH
authors.lastname: Wang
mesh_terms: D001674:Bioelectric Energy Sources; D019149:Bioreactors; D003300:Copper / Q000302:isolation & purification*; D004566:Electrodes; D009930:Organic Chemicals / Q000302:isolation & purification*; D056951:Photoelectron Spectroscopy; D062065:Wastewater / Q000737:chemistry*
chemical_list: D003300:Copper; D009930:Organic Chemicals; D062065:Wastewater
keywords: External resistance; Linear sweep voltammetry; Microbial fuel cells; Removal efficiency; Wastewaters