Optimization in Mediated Electrochemical Oxidation Using Cobalt Sulfate as a Mediator

Optimization of the Mediated Electrochemical Oxidation (MEO) for destructing a dissolved organic compound has been studied. The experiment was carried out in a 100 mL electrolytic cell equipped with a rotameter, an outlet tube of “tetradent” designs, a collecting tube, a stabilized DC power supply, and electrodes which were fabricated from platinum foil. It has been found that optimum efficiency of destruction of glucose as a model of compound could be achieved by using cobalt sulfate as a mediator, at its optimum concentration of 0.43 M, in a 2 M sulfuric acid solution, for a glucose concentration of 0.2 M. The time required for optimum destruction efficiency was 2 hours.