Decolourisation of Disperse Brown Dye Solution by Electrocoagulation Process with Al and Fe Electrodes

Abstract

Dyes used in the textile industry can easily contaminate water and are becoming a world-widepollution problem. The efficiency of colour removal process from artificially prepared and actualtextile wastewater using electrocoagulation (EC) was investigated in this study. A disperse dyewas selected for the synthetic dye wastewater experiments. Different operating conditions suchas dye concentration, pH, conductivity values and current density (CD) were investigated usingsynthetically prepared dye solution in a batch EC reactor with parallel-connected electrodes. ECoptimum working conditions for decolourisation rate of 50 mg/L synthetic dye solution werefound as current density of 30-37.5 mA/cm2, conductivity value of 1 mS/cm, pH value of 7.5 at25oC for both Al and Fe electrodes in this experimental work. Additionally, a real textilewastewater was tested at similar experimental conditions achieved with synthetic dye solutionusing a batch EC reactor. Dye removal rate was achieved as %80 with real wastewater with energyconsumption of 9.16 kWh/m3.