Mediated electrochemical oxidation process for destruction of TOC in a batch recirculation reactor

Electro oxidation processes are developed throughout the world for ambient temperature destruction of organic wastes. Several of these processes are based on Mediated Electrochemical Oxidation (MEO). This article presents the experimental results of electro chemical study based on MEO process conducted for synthetic organic ion exchange resin materials. Investigation was carried out using the traditional noble metal oxide coated anode, RuO2/Ti and the mediator used for the experiment was FeSO4, with NaCl as supporting electrolyte. The concentration of NaCl was maintained at 5, 8, 12 gm/l. The experiment was carried out in batch recirculation reactor with current densities 1.25, 2.50, 3.75, 5.00, 6.25, 7.50, 8.75, 10.00 A/dm for various flow rates 20, 40, 60, 80, 100 l/h. The study highlighted that in batch reactor set up the best effect of TOC reduction was found to occur at 3.75 A/dm with flow rate of 20 l/h. The simulated studies were carried out for different volumes of effluent and current densities. A graphical analysis was made between the experimental and simulated values and it was found that both the values are very close.