The Effect of Electrocoagulation Voltage and Dye Initial Concentration to The Removal Percentage of Rhemazol Red RB

Abstract

Batik industry wastewater has an adverse effect for the environment if disposed without any treatment. Wastewater of batik industry increases as production of batik industri growth. Remazol Red RB is one of the pollutant sources in batik dyeing process wastewater. The conventional method which is used for processing wastewater still has feebleness so as an innovative method wastewater treatment is needed. One ot those is electrocoagulation. Electrocoagulation is colloidal destabilization through an electrochemical process. This electrocoagulation carried out by varying electrical voltages and initial concentration of dyes. Electrical voltages are varied at 10 volt, 15 volt, 20 volt, and 25 volt, initial concentration are 100 ppm, 150 ppm, 200 ppm, and 250 ppm. Percent removal measured for determining the effect of electrical voltage and initial concentration. decreasing dyes color is measured using spectrophotometer UV-Vis. Electrocoagulation process uses aluminum as anode and iron as cathode which is arranged in monopolar series configuration. The wastewater is 200 mL in volume and the process was taken in 60 minutes. Result showed that both of electrical and initial concentration affect percent removal of synthetic wastewater dyes. The best electrical voltage and initial concentration are 25 volt and 100 ppm with percent removal obtained is 99,80% for 10 minutes electrocoagulation.