Decrease Levels of Chromium, Copper, and Nickel in Liquid Waste of The Electroplating Laboratory of Medan Polytechnic with Electrocoagulation Method

Sagir Alva

doi:10.32734/jcnar.v3i2.9346

Authors

Sagir Alva Faculty of Engineering, Universitas Mercu Buana, Jl. Meruya Selatan No. 01, Kembangan, Jakarta-11650, Indonesia

DOI:

https://doi.org/10.32734/jcnar.v3i2.9346

Keywords:

Electroplating, Wastewater, Electrocoagulation, Flocculation, Coagulation, Heavy Metals

Abstract

The liquid waste contained several metals such as Cr, Cu, and Ni in concentrations of 64 mg / L, 252 mg / L, and 125 mg / L, which may cause environmental pollution. The process of coating metal has resulted in heavy metal waste. The electrocoagulation process is a combination between electrochemical processes and coagulation-flocculation processes. This research aims to use the electrocoagulation method as an alternative for treating wastewater containing heavy metals in particular. The results showed a decreasing trend of percentage in metal content with decreased levels of 99.931%, 99.837%, and 99.994% for Cr, Cu, and Ni, respectively.

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