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.
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The authors would like to thank the National Research Foundation, South Africa, for funding this project.
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Gounden, A.N., Jonnalagadda, S.B. Ozone facilitated dechlorination of 2-chloroethanol and impact of organic solvents and activated charcoal. Environ Monit Assess 185, 8227–8237 (2013). https://doi.org/10.1007/s10661-013-3169-4
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DOI: https://doi.org/10.1007/s10661-013-3169-4