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- W3195806632 endingPage "119402" @default.
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- W3195806632 abstract "Sulfide-modified zero-valent iron (S-Fe0) has been regarded as a promising method to enhance the catalytic activity of Fe0. Therefore, peracetic acid (PAA) firstly activated by S-Fe0 was conducted to remove sulfamethazine (SMT) in this study. Only 13.1% SMT could be removed within 60 min in Fe0/PAA system while 86.5% SMT could be removed within 60 min in S-Fe0/PAA system at condition of [PAA] = 100 μΜ, [S-Fe0] = 20 mg/L, [SMT] = 5 mg/L, pH = 4.0. The effect of S/Fe ratio, S-Fe0 dosage, PAA concentration and initial pH on SMT removal were investigated. The characterization of S-Fe0 such as SEM, XPS, contact angle and Tafel confirmed that the formation of sulfur species on Fe0 surface could enhance the catalytic performance of Fe0. S2− played the major role and SO32- played the minor role in accelerating the conversion of Fe3+ to Fe2+. •OH and R-O• exhibited 67.1% and 32.5% contribution for SMT removal in S-Fe0/PAA system, respectively. The possible degradation pathway of SMT was also proposed. Cl− and HCO3– had a negligible adverse effect on SMT removal in S-Fe0/PAA system indicating the good adaptability of inorganic ions. In addition, S-Fe0/PAA system had the good recycle ability of S-Fe0 and showed a better performance in removing SMT in the natural fresh water. Therefore, this study notably showed the potential applicability of S-Fe0/PAA system in degrading SMT in natural fresh water." @default.
- W3195806632 created "2021-08-30" @default.
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- W3195806632 date "2021-12-01" @default.
- W3195806632 modified "2023-09-26" @default.
- W3195806632 title "Sulfamethazine removal by peracetic acid activation with sulfide-modified zero-valent iron: Efficiency, the role of sulfur species, and mechanisms" @default.
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- W3195806632 doi "https://doi.org/10.1016/j.seppur.2021.119402" @default.
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