Date of Award

2010

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Civil and Environmental Engineering

Keywords

Engineering, Environmental.

Rights

CC BY-NC-ND 4.0

Abstract

Formation of ozonation products of pharmaceutical compounds bezafibrate and carbamazepine was studied under four varying ozone and hydroxyl radical exposures under typical drinking water ozonation treatment. The results indicate that the concentration of carbamazepine was reduced to below method detection limit within 2 minutes of ozonation. Oxidation efficiency of bezafibrate exceeded 95% after 5 min of ozonation in all settings. Direct attack by ozone was responsible for oxidation of carbamazepine under all experimental conditions. Major ozonation products of carbamazepine were observed to be susceptible to oxidation by hydroxyl radicals. Oxidation of bezafibrate and product formation was affected by both ozone and hydroxyl radical exposure, depending on their relative magnitude. While one of ozonation products of bezafibrate by direct attack of ozone was observed to be relatively resistant to further oxidation, the others were either completely or partially transformed mostly through reaction by hydroxyl radicals.

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