Advanced oxidation processes (AOPs) have been effective in the degradation of recalcitrant organic contaminants, including pharmaceutical and personal care products (PPCPs). There is however, concern over the uncertainty of the possible toxicity of the degradation intermediates. We investigated the reaction intermediates and pathways for triclosan (TCS) degradation with sulfate radicals�based AOP in comparison to the Fenton reaction (a well established hydroxyl radicals�based AOP) to establish the distinctiveness of the two radical processes. TCS, an antimicrobial agent widely used in PPCPs has attracted significant concern because of the toxicity, prevalence and persistence of its derivatives, and recent reports of the possible estrogenic effects have enforced the USEPA to reexamine the potential risks of human exposure to TCS. This study will provide further insights into the toxicological effects of the remediation of water contaminated with TCS and other PPCPs using AOPs.

Reaction intermediates and pathways of triclosan decomposition by sulfate radicals

243rd National Meeting (2012)

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