Treatment of reactive black KN-B wastewater by electrocoagulation with sacrificial iron anode
铁阳极电凝聚处理活性黑KN-B染料废水

A preliminary experimental study on the treatment of reactive black KN-B wastewater by electrocoagulation(EC) with a sacrificial iron anode was carried out. The influences of current density, initial pH, species and concentration of electrolyte, initial concentration of dye, water temperature, etc on the decolorization were tested through experiments. Results show that under certain experimental conditions 93% decolorization efficiency of the simulated wastewater containing dye can be achieved. Current strength, initial concentration of dye, initial pH and species of electrolyte have obvious effects on decolorization efficiency, while temperature and concentration have lightly effects on the decolorization of the dye. In the EC process the mechanism of adsorption and charge neutralization of ionic species play an important role and the reduction of the dye on the cathode occurred.