Modeling the kinetics of UV/hydrogen peroxide oxidation of some mono-, di-, and trichlorophenols.

摘要: The decomposition of a number chlorophenols (CPs), namely 2-CP, 2, 4-dichlorophenol and 2,4,6-trichlorophenol, has been studied in aqueous solution by UV-catalyzed oxidation with H(2)O(2) under UV radiation emitted 125-W medium pressure Hg lamp an immersion well-type quartz photoreactor, the organic-bound chlorine converted into environmentally harmless inorganic chloride. For oxidant/CP mole ratios between 1:1 16:1, reaction kinetics were modeled corresponding rate constants found periodically measuring remaining CP, hydrogen peroxide chloride solution. A theoretical model for degradation pathway is proposed expressing as linear function concentrations CP oxidant. pseudo-first order approximation compared. H(2)O(2), when combined UV, effective photoactivated photodegradation terms initial CPs destruction was: Cl(3).Ph>/=Cl(2).Ph>Cl.Ph.