Electrochemical oxidation for Disperse blue 1 dye wastewater simulated in the laboratory, was investigated in this study using Graphite materials as the electrodes. The experiment was carried out in a batch process in a laboratory-scale that was analyzed at every 30 min regular intervals, for a total period of 180 min. the results were reported in terms of colour removal for different parameters of initial concentrations (50mg/L, 95mg/L, and 145mg/L), electrode geometry (plain and cylindrical), pH (4, 7, 9), current intensity (1A, 3A), and temperature (280C, 500C). For the different initial concentrations, Color was reduced by 85.4%, 67.4% and 67.8% respectively. More also the plain graphite electrodes showed a comparatively higher efficiency of colour removal than the cylindrical graphite electrodes. Furthermore, we observed a decrease in colour removal when the pH of the effluent was increased from 4 to 9 showing an efficiency of 58.7%, 54.6% respectively. Current intensity and temperature showed similar variations. UV-Vis study confirmed that the proposed electrochemical degradation process could be an effective method for the degradation of textile dye effluent.

Electrochemical oxidation for Disperse blue 1 dye wastewater simulated in the laboratory, was investigated in this study using Graphite materials as the electrodes. The experiment was carried out in a batch process in a laboratory-scale that was analyzed at every 30 min regular intervals, for a total period of 180 min. the results were reported in terms of colour removal for different parameters of initial concentrations (50mg/L, 95mg/L, and 145mg/L), electrode geometry (plain and cylindrical), pH (4, 7, 9), current intensity (1A, 3A), and temperature (280C, 500C). For the different initial concentrations, Color was reduced by 85.4%, 67.4% and 67.8% respectively. More also the plain graphite electrodes showed a comparatively higher efficiency of colour removal than the cylindrical graphite electrodes. Furthermore, we observed a decrease in colour removal when the pH of the effluent was increased from 4 to 9 showing an efficiency of 58.7%, 54.6% respectively. Current intensity and temperature showed similar variations. UV-Vis study confirmed that the proposed electrochemical degradation process could be an effective method for the degradation of textile dye effluent.

<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