title: Removal of persistent organic pollutant hexachlorocyclohexane isomers by advanced oxidation process.
abstract: Organochlorine insecticide Lindane (gamma-Hexachlorocyclohexane) and its isomers (alpha, beta, delta-HCH) are recalcitrant and toxic compounds. They were progressively banished in most of the countries, because of their persistence and toxicity. Due to their nonselective production process and widespread use, they are still occurring in the environment. These insecticides and isomers were detected in all media like soil, ground water, sediments, vegetables and even in human tissues. In this study, UV, H2O2, UV+H2O2, Fenton's reagent, UV+Fenton's reagent, Advanced Oxidation Process (AOP) have been applied for degradation of HCH isomers (a, beta, gamma and delta-HCH). The results revealed that the UV+H2O2 treatment was most effective, which could do 99% degradation of all isomers of HCH within 75 minutes. The results in detail are presented and discussed in this paper.
mesh_terms: D004785:Environmental Pollutants / Q000737:chemistry* / Q000528:radiation effects; D001556:Hexachlorocyclohexane / Q000737:chemistry* / Q000528:radiation effects; D006861:Hydrogen Peroxide / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D010084:Oxidation-Reduction; D010782:Photolysis; D014466:Ultraviolet Rays
chemical_list: D004785:Environmental Pollutants; C045076:Fenton's reagent; D001556:Hexachlorocyclohexane; D006861:Hydrogen Peroxide; D007501:Iron