ELECTRO-OXIDATION PROCESS OPTIMIZATION OF NAVY-BLUE-RX DYE THROUGH RESPONSE SURFACE METHODOLOGY-A CASE STUDY

摘要

The applicability and optimization of electro-oxidation (EO) process with graphite (anode) and stainless steel (cathode) for the treatment of simulated Reactive Navy Blue RX dye waste water has been reported here. As a way to optimize the performance, have an impact on of five parameters affecting EO, i.e current density, initial dye cone, residence time, initial pH and electrolyte dose was studied using response surface method (RSM) with Box-Behnken design (BBD) employing stimulated dye waste water. The results obtained after the modelling study are with the following optimum conditions: 15mA/cm2 current density, 185 mg/L initial aye concentration, 86.96 min residence time, 7 initial pH and 931.21mg/L electrolyte dose; and predicted % color removal and effluent dye concentration as 92.06% and 19.46 mg/L respectively. The results obtained with the Confirmatory tests at the obtained optimum conditions are 92.16 % color removal and 14.5mg/L effluent dye concentration, which were in closely related with the predicted results. Hence the study of EO can be considered as an efficient treatment option for stimulated Navy Blue RX dye waste water.