▎ 摘　　要

This study was conducted on the synthesis of magnesium ferrite/reduced graphene oxide (MgFe2O4/rGO) nanocomposite as anodes for removal of hexavalent chromium (Cr(VI)) ions from industrial wastewater through the electrocoagulation (EC) technique. MgFe2O4/rGO was synthesized using a hydrothermal method. Study of the morphology surface MgFe2O4/rGO using SEM showed that the MgFe2O4 particles were strongly attached on 3D crumpled and rippled rGO nanosheets which illustrated the higher porosity of the MgFe2O4/rGO structure. XRD analysis also indicated good anchoring of MgFe2O4 particles on rGO nanosheets. Results of EIS studies prove the interfacial processes and lower charge transfer resistance of MgFe2O4/rGO than that of MgFe2O4. The effect of pH value, Cr (VI) concentration and current density was studied for removal of Cr (VI) from industrial wastewater using the MgFe2O4/rGO as anode via EC technique. Results showed that complete treatment was obtained for treatment of 60 mg/L of Cr (VI) in NaCl concentration of 0.4 g/L and pH 2 under 25 minutes EC for 5mA/cm(2) current density and energy consumption of 0.0072 kWh/m(3). Comparison between obtained results for Cr(VI) treatment using MgFe2O4/rGO nanocomposite and other reported works indicated to lower energy consumption in this study due lower charge transfer resistance in MgFe2O4/rGO.