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Abstract
The oxidation of dehydroabietic acid (DHA) by ozone in solution was examined using a spectrophotometric method in combination with the computer program MATLAB to empirically fit the data. The reaction rate constant between the two compounds was determined to be 1.1×102 L/mol·s at 23 ºC. This value is in line with previous work on multiply-substituted aromatic compounds. The stoichiometric ratio of the ozone/DHA reaction was found to be 3 moles of ozone per mole of DHA consumed. Furthermore, a stoichiometric ratio of 3:1 H2O2 produced:DHA oxidized was determined to have the best fit with experimentally derived results.
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ACKNOWLEDGMENTS
The authors wish to thank BC Hydro, NSERC, the Science Council of British Columbia, and the Sustainable Forest Management NCE for financial assistance. Thanks also to the UBC Department of Civil Engineering for the use of the ozone generator. Finally, thanks to the two anonymous reviewers of the manuscript, for their constructive and valuable comments.