16. Effect of Current and Electrodes Area to Color Removal Efficiency and Energy Consumption by Electrocoagulation Process

The objectives of these experiments were to investigate the effect of current and electrodes surface area on color removal efficiency and energy consumption. The result was showed that color removal efficiency was more than 95% for current apply 0.4–0.5 A, that pH increased with increasing time of electrolysis, then stabilize at close to 8–9. Amount of current density was indicate that increasing current was correspond to increase a removal efficiency that according to Faraday’s law. As for, the electrode surface area with constant current, the color removal efficacy is the trend to increase. During electrolysis, larger electrodes provide higher color removal efficiency than smaller electrodes. Also, the larger electrodes can also reduce the applied voltage of the system that cause of low operation cost. For effect of current per electrode area constant but difference current and electrode area, Color removal efficiency was difference where removal efficiency was depend on the current density. The conclusion was indicated that both of current and electrode area was effect to electrocoagulation process.