STUDY ON THE TREATMENT OF DIRECT BLUE 86 IN WATER BY ELECTRO FENTON PROCESS

Abstract

The main objective of this paper is to study the parameters effect on the efficiency treatment of direct blue 86 (DB86) in water by electro fenton. Organic substance was degraded during the electrochemical procedure by the generation of hydroxyl radicals (•OH). Anode and cathode carbon felt electrodes were used in the electrochemical experiment system. Experiments were conducted to investigate the impact of specific operating parameters: pH, electrode distance, current, electrolysis time, concentration of FeSO₄.7H₂O, temperature on the treatment capacity of DB86. As a result, with optimal conditions performed at pH = 3, current 500 mA, concentration of Fe²⁺ = 2 mmol/l, concentration of NaCl = 0.1 mol/l; electrode distance of 1 cm, temperature of 25^oC, after 90 minutes, the COD reduce efficiency reached 88.63%. The findings of this study indicate that the electro fenton procedure can be effectively used for the degradation of organic dyes.