title: Nickel ion removal from wastewater using the microbial electrolysis cell.
abstract: In this study, the microbial electrolysis cell (MEC) was examined for treatment of wastewater containing nickel ion (Ni(2+)). Effects of initial Ni(2+) concentrations in catholyte, pH values of catholyte, and applied voltages on MEC performance were determined. Results showed that the Ni(2+) removal efficiency with the MEC was three times higher than those with an electrolysis cell and a microbial fuel cell. Ni(2+) removal efficiencies decreased from 99 ± 0.6% to 33 ± 4.2% with the initial Ni(2+) concentrations from 50 to 1000 mg/L, while the mass removal of Ni(2+) increased consistently with the initial concentrations. Ni(2+) removal efficiencies in the MEC increased from 51 ± 4.6% to 67 ± 5.3% with the applied voltages from 0.5 to 1.1 V. These results demonstrate that the MEC can be an alternative process to effectively remove Ni(2+) from wastewater.
authors: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275, China.
authors: Bangyu
authors: B
authors: Qin
authors: Haiping
authors: H
authors: Luo
authors: Guangli
authors: G
authors: Liu
authors: Renduo
authors: R
authors: Zhang
authors: Shanshan
authors: S
authors: Chen
authors: Yanping
authors: Y
authors: Hou
authors: Yong
authors: Y
authors: Luo
mesh_terms: D004572:Electrolysis / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008827:Microbiological Phenomena; D009532:Nickel / Q000032:analysis / Q000302:isolation & purification*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D009532:Nickel; D062065:Wastewater; D014874:Water Pollutants, Chemical