Photo-Electrochemical Treatment of Disperse Blue1 Dyes in Simulated Textile Effluent: Parameter Optimization Method

Abstract

<p>In this present study, a hybrid technique consisting of Electrochemical and UV irradiation is applied simultaneously to degrade simulated dyeing wastewater containing Disperse blue 1 dye. Several operational parameters such as the effects of pH, current intensity, temperature, initial concentration, and kinetic of the dye concentration on treatment efficiency were studied. </p> <p>The experimental results show that the decolourization rate of the wastewater is highest at low dye concentration consequent on the fact that it gave a percentage decolourization of 82.1 at a dye concentration of 25mg/L in a short time interval of 180 minutes. The influence of pH was also evaluated and the result showed higher efficiency of decolourization at alkaline PH. Similar evaluations were done for current and temperature. Finally, a comparative study was carried out to compare the efficiency of decolourization for a single electrochemical treatment, and the hybrid technique applied here. The result showed a relatively better efficiency of 89.1% for the photoelectrochemical technique compared to an88.7% for the electrochemical method. </p> <p> </p> <b> Keywords: </b>Graphite electrodes; Disperse blue1 dye; Photoelectrochemical degradation; UV-Vis Spectrophotometer