Enhanced degradation of triclosan using UV–Fe2+ synergistic activation of peracetic acid. Issue 3 (11th February 2021)

• Record Type: Journal Article
• Authors: Wang, Shixiang; Chen, Zhuo; Wang, Zhenran; Fu, Yongsheng; Liu, Yiqing
• Is Part Of: Environmental science. Volume 7:Issue 3(2021)
• Page Start: 630
• Page End: 637
• Publication Date: 2021-02-11
• Subjects: Water-supply -- Periodicals; Water security -- Periodicals; Water resources development -- Periodicals; Water chemistry -- Periodicals; 553.705
• DOI: 10.1039/d0ew01095b
• Languages: English
• ISSNs: 2053-1400

Abstract

Abstract : UV/Fe 2+ /peracetic acid (PAA) as an efficient and novel advanced oxidation system was reported to produce reactive species ( i.e., hydroxyl radicals (˙OH) and organic radicals) for triclosan (TCS) degradation. Abstract : UV/Fe 2+ /peracetic acid (PAA) as an efficient and novel advanced oxidation system was reported to produce reactive species ( i.e., hydroxyl radicals (˙OH) and organic radicals) for triclosan (TCS) degradation, which is a representative of pharmaceutical and personal care products (PPCPs). The effects of initial pH, PAA dosage and common water matrix on TCS degradation were investigated. The results indicated that 1 μmol L −1 TCS was completely removed within 10 min at an optimum initial pH of 3.5, Fe 2+ dosage of 10 μmol L −1, PAA dosage of 1 mmol L −1 and temperature of 25 °C. The presence of HCO3 − and natural organic matter (NOM) showed obviously negative effect on TCS degradation, while NO3 − strongly promoted the destruction of TCS. According to the detected nine reaction products, the probable degradation pathways of TCS by UV/Fe 2+ /PAA were proposed including ether bond cleavage, hydroxylation, dechlorination, dechlorination–hydroxylation and dehydrogenation.