OXIDATION OF AQUEOUS CHLOROPHENOLS WITH PHOTO-FENTON PROCESS

Research of 2,4-chlorophenol and 2,4,6-trichlorophenol in aqueous solu tion using the photo-Fenton process was conducted in two parts. The fi rst part of the study explored the treatment efficiency and reaction r ate expression of 2,4-chlorophenol and 2,4,6-trichlorophenol. With res pect to the simulated experimental data, the relationship between the reaction rate for 2,4-chlorophenol and 2,4,6-trichlorophenol and H2O2 concentration was expressed as a first-order reaction and that between the reaction rate and the Fe(II) concentration was a saturation-type reaction. In the second half of this study, chlorohydroquinone, catech ol, dichlorocatechol, and dichlororesorcinol were found in the photo-F enton process by GC/MS. Some of these identified intermediates were mo re toxic than the primary compound.