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- W2346060623 abstract "Abstract Advanced oxidation processes are about to be implemented for the elimination of the residual antibacterial activity of wastewater matrices that has a stimulating effect on the evolution of antibiotic resistance. These techniques apply OH which by scavenging Cl − /Br − yields Cl 2 − /Br 2 − in case of brackish or saline waters. The one-electron oxidation mechanism is peculiar in case of penicillins since a competition occurs between the aromatic and thioether moieties for the free radical attack. This competition determines the efficiency of antibacterial inactivation due to the vicinity of the sulfur to the β-lactam pharmacophore. In order to unravel the OH and Cl 2 − /Br 2 − induced oxidation mechanism, pulse radiolysis techniques were applied. As a result, reactive intermediates typical of sulfur oxidation were observed. Interestingly, a higher sulfur radical cation concentration was obtained by applying Cl 2 − /Br 2 − compared to OH, on account of a unique stabilized intermediate that formed during the OH induced oxidation. The reported mechanism anticipates that scavenging of OH by Cl − /Br − can even have a positive effect on advanced oxidation of organic sulfides." @default.
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- W2346060623 date "2016-07-01" @default.
- W2346060623 modified "2023-09-29" @default.
- W2346060623 title "One-electron oxidation of molecules with aromatic and thioether functions: Cl2−/Br2− and OH induced oxidation of penicillins studied by pulse radiolysis" @default.
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- W2346060623 doi "https://doi.org/10.1016/j.jphotochem.2016.04.025" @default.
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