Abstract:Koji KosakaThe behaviour of pyrene and its decomposition by-products in chlorination and their aryl hydrocarbon receptor (AhR) ligand activities were investigated. In the study on pyrene behaviour in chlorination, the pyrene and chlorine concentrations and the pH range were 0.82-21 mg l 21 , 2.0-2.1 mg l 21 and 3.2-10, respectively. In the pH range of 3.2-5.1, pyrene was decomposed faster in the order of pH 3.2, 3.7 and 5.1. However, when the pH ranged from 5.1 to 10, pyrene was decomposed faster in a pH range… Show more
“…For ozonation in presence of NaCl and PAH we suggest the formation of an intermediate dihydroxypolyaromatic compounds giving corresponding quinone and H 2 O 2 . It has been demonstrated that pyrene with chlorine decomposes into pyrene-4,5-dione and 1-chloropyrene by both oxidation and chlorine-substitution reactions, respectively [57]. Authors evidenced that pyrene decomposition was associated with the formation of other reactive species than chlorine and they suggest the formation of HO • radicals.…”
Section: Ozonation Of a Synthetic Petroleum Effluent In Presence Of Nmentioning
“…For ozonation in presence of NaCl and PAH we suggest the formation of an intermediate dihydroxypolyaromatic compounds giving corresponding quinone and H 2 O 2 . It has been demonstrated that pyrene with chlorine decomposes into pyrene-4,5-dione and 1-chloropyrene by both oxidation and chlorine-substitution reactions, respectively [57]. Authors evidenced that pyrene decomposition was associated with the formation of other reactive species than chlorine and they suggest the formation of HO • radicals.…”
Section: Ozonation Of a Synthetic Petroleum Effluent In Presence Of Nmentioning
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