REMOVAL OF DYE BLACK IRIS NO. 24 BY ELECTROCOAGULATION

Abstract

Iris removal of black dye in water, electrocoagulation (EC) was performed in batch mode, using a glass container for up to five liters with 4 electrodes Aluminum (Al) used as anode electrodes and 4 Iron (Fe) used as cathodes in various tests with currents of 2, 6, 10 A, for 24 minutes, sampled every 3 min for 8 data representative of the process and change variables during electrolysis as response variables were studied pH , temperature, conductivity, turbidity, energy consumption, potential, total dissolved solids (TDS), and removal of color, in order to find the best settings removing the dye, both in terms of time and current as the type electrode used as anode; the best color removal was obtained at a current of 2 A, to a time of 24 minutes with anode being 98.1% Fe fading, however at 6 min a percentage of 88.65% is obtained making the difference between these figures is not statistically significant but in terms of time whether it would be useful to reduce the cost of treatment, using the anode At one color removal of 97.68% was obtained at a time of 9 min with a current of 2 A, suggesting that although Fe as greater removal is achieved anode this would involve increased time and production EC waters with iron residues resulting from wear sacrificial electrode, decreasing in turbidity it is achieved by 64.1% of Fe with the anode 6 A treatment 15 min while anode is Al achieves a 70.45% removal also at 6 A treatment 12 min .

Key Words: Conductivity, Dyes, Electrocoagulation, Electrolysis, Turbidity.