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  • Title: Degradation of chlorophenols in aqueous media using UV XeBr excilamp in a flow-through reactor.
    Author: Matafonova G, Christofi N, Batoev V, Sosnin E.
    Journal: Chemosphere; 2008 Jan; 70(6):1124-7. PubMed ID: 17928030.
    Abstract:
    2-Chlorophenol (2-CP), 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) at initial concentrations of 10, 20, 50 and 100mg l(-1) were degraded in aqueous media by direct UV photolysis using dielectric barrier discharge XeBr( *) excilamp (283nm) in a flow-through photoreactor. The pseudo-first order rate constants were highest and half-life times were lowest for 4-CP. The rates of photolysis under the experimental conditions increased in the order: 2-CP<2,4-DCP<4-CP. The intermediates of photolysis were identified by GC-MS and HPLC. The evolution of hydroquinone and p-benzoquinone as major intermediates of 4-CP photolysis was monitored.
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