title: Ozone facilitated dechlorination of 2-chloroethanol and impact of organic solvents and activated charcoal.
abstract: The ozone-initiated oxidation of 2-chloroethanol was followed by monitoring the consumption of the halogenated organic substrate. Gas chromatographic analysis of the ozonated products showed an increase in conversion from about 1 % after 3 h of ozone treatment to about 22 % after 12 h. The yields of major ozonated products identified and quantified namely acetaldehyde, acetic acid, and chloride ion increased proportionately as a function of ozone treatment time. The percent conversion of 2-chloroethanol in the presence of acetic acid or ethyl acetate were found to be higher than those under solvent-free conditions with similar products obtained. The use of activated charcoal during the ozonolyis of 2-chloroethanol showed a significant increase in the percent conversion of the substrate compared to solvent free ozonation. Based on the experimental findings, the overall mechanism for the reaction between 2-chloroethanol and ozone is described.
authors.affiliation: Department of Chemistry, Mangosuthu University of Technology, P.O. Box 12363, Jacobs, 4026, South Africa.
authors.forename: Asogan N
authors.initials: AN
authors.lastname: Gounden
authors.forename: Sreekanth B
authors.initials: SB
authors.lastname: Jonnalagadda
mesh_terms: D002606:Charcoal / Q000737:chemistry*; D005023:Ethylene Chlorohydrin / Q000737:chemistry*; D008956:Models, Chemical; D010126:Ozone / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D012997:Solvents; D014874:Water Pollutants, Chemical; D002606:Charcoal; D010126:Ozone; D005023:Ethylene Chlorohydrin
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