Comparison of the oxidation of halogenated phenols in UV/PDS and UV/H₂O₂ advanced oxidation processes.

ABSTRACT: UV/peroxydisulfate (PDS) and UV/hydrogen peroxide (H₂O₂) can effectively degrade halophenols (HPs, e.g., 2,4-bromophenol and 2,4,6-trichlorophenol); meanwhile, information about the discrepancies in the related degradation kinetics and mechanisms of these two processes is limited. To gain this knowledge, the degradation of two typical HPs (i.e., bromophenols and chlorophenols) in UV/PDS and UV/H₂O₂ processes were investigated and compared. The results showed that the degradation rates of HPs with different substitution positions in the UV/PDS process were in the order of para-substituted HPs (i.e., 4-BP and 4-CP) > ortho-substituted HPs (i.e., 2-BP and 2-CP) > meta-substituted HPs (i.e., 3-B

SUBMITTER: Liu J 

PROVIDER: S-EPMC9049674 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature