Elektrokoagulasi untuk Menurunkan COD dan Logam Berat dalam Limbah Cair Tekstil Menggunakan Elektroda Alumunium dan Baja

Abstract

Coagulation and flocculation is one part of the process stages in water treatment and wastewater treatment. As a conventional method by adding methods of addition of chemicals. Electrocoagulation at this time can be used as an alternative process of water treatment and liquid waste that is innovative. The electrocoagulation process is a deliberate corrosion process utilized, especially in metals with low electrode potential. In this study, electrocoagulation uses formations 3 anode: 1 anode and 1 anode: 3 cathodes using aluminum metal electrodes with steel. The results of the textile waste treatment of the textile industry, Al electrode provide the best results compared to steel with variations in the number of anode and cathode plate arrays; 3: 1 and 1: 3, on currents 3A and 5A. The result of electrocoagulation at 3A electrode current (3: 1) and max 20 min. time provided COD content of 71.3%, Fe 3.4%, Cu 18.5%, and Zn of 19.9%. In the electrocoagulation process with a current of 5A, with time of 20 minutes, the removal of COD content was 87.6%, Fe 96.3%, Cu 88.4% and Zn 84.8%. The results of this study concluded that two of the four parameters analyzed can meet the standard threshold of standard water quality.  Fe content of  0.05 ppm, and Zn of 0.04 ppm, On a current of 5A, with Al electrode.