Volatilization of Zn and Pb and preparation of integrated micro-electrolysis filter from copper slag and its application for removing Cr(VI) from aqueous solution.

In this study, copper slag was treated by carbothermal reduction technology for preparing an integrated micro-electrolysis filter (IMEF) and recovery of Zn and Pb. The influence of roasting conditions on the volatilization of Zn and Pb, and on the performance of IMEF in removing Cr(VI) from water were studied. The results showed that increasing the roasting temperature, time, and dosage of coal facilitated the generation of zero-valent iron (ZVI) and volatilization of Zn and Pb.