Removal of Reactive Blue Dye 19 from Textile Wastewater by Elctrocoagulation Using Iron Electrodes

Abstract

ABSTRACT This work deals with the possibility of using elctrocoagulation method for removal of reactive blue 19 dyes from textile industry wastewater. The effect of various operational parameters of the removal efficiency were investigated and optimized. The removal of dye using iron sacrificial anode was affected by the initial pH, the current density, the amount of sodium chloride and initial dye concentration. The removal efficiency reaching 99.6% at optimum operating conditions of pH 11.5, current density of 50mA/cm 2 , electrolysis time of 10mins, 100mg/l initial dye concentration, 3g/l sodium chloride as supporting electrolyte, and 25 0 C. Cyclic voltametry and linear polarization have been used to determine the electrochemical characteristics of the treated dye solutions and the process which occurred at the anode surfaces