Removal of heavy metals derived from COD analysis wastewater by electrolysis using graphite electrode

Abstract

In this study, electrolysis using graphite electrodes was applied to treat wastewater generated from a COD analysis procedure (referred to as COD wastewater). COD wastewater containing high concentrations of H₂SO₄, Hg²⁺, and Cr₂O₇^2- salts were collected and then treated by electrolysis with graphite electrodes in a lab-scale experiment. The results showed that the electrolysis process was not affected by the electrode’s distance or area....