Removal of Cadmium by Electrocoagulation from Industrial Wastewater of Oil Refineries

Abstract

This study's primary goal is to look into the possibility of removing cadmium from sewage of a North Refineries Company (Baiji), before discharging into open environments. The presence of environmental heavy metals like cadmium is harmful for living organisms. The chemical procedure used to remove heavy metals from wastewater is called Electrocoagulation Aluminum anode and stainless-steel cathode are used in (EC). The primary use of this method is with industrial effluent. where a sacrificial anode is electrolytically oxidized to create the coagulants in-situ. This method is becoming more popular in the water and wastewater treatment process due to its adaptability, environmental friendliness, and capacity to provide high process efficiency at minimal running costs. Several working parameters, to achieve a higher removal capacity. in voltage of 20. The optimum electrocoagulation time 70 min, initial pH 7.5, Electrical current 2,5 amp, and Mixing speed 300 rpm, NaCl concentration 1.5 g L^-1. Under the optimum conditions established, yields a very effective (98.7%). The method was found to be highly efficient and relatively fast compared to conventional.