Copper recovery from copper-containing wastewater through treating membraneless microbial fuel cell and its electricity production
(School of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 213000, China)
Abstract: The baffled membraneless dual chamber microbial fuel cell (MFC) was constructed, the electricity generation capacity of baffled membraneless dual chamber MFC and wastewater treatment were studied, the electricity produced by MFC was used directly to treat cathode simulation copper-containing wastewater and recover copper. The results show that the baffled membraneless dual chamber MFC is started successfully in which sodium acetate is used as anode substrate, complex acclimated microorganism in activated sludge is used as anode inoculating microorganism, Cu2+ is used as cathodic electron acceptor, the maximum power density is 31.3 mW/m2 and the maximum open circuit voltage is 678.0 mV, the removal rate of Cu2+ is 99.6%, sediment on the cathode plate detected by XRD is mainly Cu. The baffled membraneless dual chamber MFC can effectively treat copper-containing wastewater and recover copper.
Key words: microbial fuel cell; copper-contained wastewater; copper recovery; electricity production