Nickel ion removal from wastewater using the microbial electrolysis cell

Metals removal and recovery in bioelectrochemical systems: A review

“…A removal efficiency of 94% was achieved from a 500 mg/L Ni(II) in 40 h. At an applied voltage of 0.5 and 1.1 V, between 51% and 67% Ni(II) was removed from an initial 500 mg/L at pH 5(Qin et al, 2012). Results showed that the Ni(II) removal efficiency with the MEC was 3 times higher than that with an electrolysis cell and a MFC.…”

Behavior of metal ions in bioelectrochemical systems: A review

“…Qin et al demonstrated that the MEC was an alternative process to treat wastewater containing Ni 2þ effectively, for a Ni 2þ removal efficiency of three times higher than those with electrolysis and an MFC was achieved with low applied voltages from 0.5 to 1.1 V of the MEC, and the reduced metal nickel depositing on the cathode electrode was recovered with an MEC as well [218]. Luo et al developed an MFCeMEC coupled system that selectively recovered Cu in MFC unit and Ni in MEC unit from wastewater with high removal efficiency [13].…”

Bioelectrochemical system for landfill leachate treatment – challenges, opportunities, and recommendations

“…Second method was introduced by Qin et al (2012) which involves the recovery of heavy metals in an MEC. The main driving force in this method is the external power which drives the electrons from an anode electrode to a cathode electrode for the reduction of metals with low redox potentials (e.g., Pb, Cd, Zn, etc.).…”