Electrochemical treatment of nitrophenols and nitroresorcinols present in waste water

摘要

Waste water containing nitrophenols and nitroresorcinolsis is treated electrochemically by arranging electrodes attached to a DC source inside a housing through which the waste water passes. Waste water containing nitrophenols and nitroresorcinolsis is treated electrochemically by arranging electrodes attached to a DC source inside a housing through which the waste water passes. The water is agitated by passing air through nozzles parallel to the electrodes. The surface area of the cathode is 10-40 times greater than that of the anode and they are arranged in a sandwich configuration. The distance from cathode to anode is 1-5 cm. The cathode is made of carbon felt or fiber bonded material and the anode of platinized Ti wire. Modular cells are arranged in a cascade. Several cascades may be arranged in parallel. Reduction of the nitro group to an amine occurs both by direct electron supply and by nascent hydrogen produced.