OZONATION OF CHLOROPHENOLS - KINETICS, BY-PRODUCTS AND TOXICITY

Kinetics and by-products of ozonation of five chlorophenols (4-chlorop henol, 2-chlorophenol 4-chlororesorcinol, 6-chloro-m-cresol and 2,4-di chlorophenol) have been studied. Second order reaction rate constants were determined. Two by-products hydrogen peroxide and quinones were f ollowed during the ozonation. The formation of inorganic chloride duri ng the ozonation proves that mineralization takes place. The toxicity of ozonation products has been compared with the toxicity of pure chlo rophenols utilizing Daphnia magna 24 hour test.