Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6326643 | Science of The Total Environment | 2015 | 9 Pages |
Abstract
In order to examine the role of ozone (O3) and hydroxyl radicals (OH) in the degradation of ofloxacin, ozonation was performed at pHÂ 2, 7 and 12. In this study, 12 new structures have been proposed for the ozonation by-products detected during the ozonation of ofloxacin. According to the identified ozonation by-products, O3 and OH were found to react with ofloxacin during ozonation. The reaction between ofloxacin and O3 proceeded via hydroxylation and breakdown of heterocyclic ring with unsaturated double-bond. The reaction between ofloxacin and OH generated various by-products derived from the breakdown of heterocyclic ring. Ecotoxicity assessment indicated that ozonation of OFX could yield by-products of greater toxicity compared with parent compounds.
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Authors
Kheng Soo Tay, Norfazrina Madehi,