Electrochemical Treatment Of Dairy Effluents Using Aluminum Electrodes
Abstract— The dairy industry generates strong wastewater characterized by high BOD, COD, nutrients and inorganic
content. Furthermore, the dairy industry is one of the largest sources of industrial effluents. Hence, the cost effective treatment
of dairy effluents for environmental protection is a challenging task. The removal of pollutants from dairy was experimentally
investigated using direct current electrocoagulation (EC). In this study, the effect of pH, electrolysis time (ET), applied
voltages were examined. The COD and turbidity in the aqueous phase was effectively removed when aluminum electrodes
were used. The optimum value of voltage, pH and ET were found to be 25V, 7.0 and 60 minutes respectively. The batch EC
experimental results revealed that the overall COD, turbidity and phosphate removal efficiencies reached 94.7%, 96.7% and
89.4%. Thus, EC technology with aluminum electrodes in bipolar system could be an attractive alternative for the treatment
of Dairy effluents.
Index Terms— Aluminum electrodes, COD, Dairy effluent, Electrocoagulation treatment.