A membrane-free baffled microbial fuel cell for cathodic reduction of Cu(II) with electricity generation

作者：Tao, Hu-Chun^*; Li, Wei; Liang, Min; Xu, Nan; Ni, Jin-Ren; Wu, Wei-Min

来源：Bioresource Technology, 2011, 102(7): 4774-4778.

DOI：10.1016/j.biortech.2011.01.057

• Microbial fuel cell
• Cu(II) reduction
• Electricity generation
• Membrane-free

A membrane-free baffled microbial fuel cell (MFC) was developed to treat synthetic Cu(II) sulfate containing wastewater in cathode chamber and synthetic glucose-containing wastewater fed to anode chamber. Maximum power density of 314 mW/m(3) with columbic efficiency of 5.3% was obtained using initial Cu2+ concentration of 6400 mg/L. Higher current density favored the cathodic reduction of Cu2+, and removal of Cu2+ by 70% was observed within 144 h using initial concentration of 500 mg/L Powder X-ray diffraction (XRD) analysis indicated that the Cu2+ was reduced to Cu2O or Cu2O plus Cu which deposited on the cathode, and the deficient cathodic reducibility resulted in the formation of Cu-4(OH)(6)SO4 at high initial Cu2+ concentration (500-6400 mg/L). This study suggested a novel low-cost approach to remove and recover Cu(II) from Cu2+-containing wastewater using MFC-type reactor.

• 出版日期2011-4
• 单位北京大学深圳研究生院; 北京大学