Removal of heavy metal ions from aqueous solutions by electrocoagulation using Al and Fe anodes

Abstract

Electrocoagulation treatment of model wastewater solutions to remove jointly present Cu 2+ and Ni 2+ ions was studied. The infl uence of the current density, concentration of impurities, anode material, and structure of the precipitate of coagulant metal hydroxides on the effi ciency of removal of the heavy metal ions was examined. The decisive factor under the chosen process conditions is the anode material. The electrocoagulation effi ciency is considerably higher when using the aluminum anode, compared to the iron anode.

Electrocoagulación de iones de metales pesados en aguas residuales: Una revisión

“…Kenova et al [34] estudiaron la electrocoagulación de agua residual sintética conteniendo Cu 2+ y Ni 2+ con concentraciones de 100, 250 y 500 mg/L para cada ion. Las variables valoradas fueron densidad de corriente, tiempo y material anódico.…”