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- W3040253658 startingPage "123356" @default.
- W3040253658 abstract "This study reported the kinetics and mechanism of degradation of odorant haloanisoles by peracetic acid combined with UV irradiation (PAA/UV). The removal efficiency of haloanisoles by PAA/UV was more than 92 % after 1 h reaction at pH 5, 25 °C, [HAs] =50 μg/L and [PAA] = 10 mg/L. The degradation of haloanisoles was fitted by the first-order kinetic model, and the rate constants of various haloanisoles followed the order: 2,4,6-tribromoanisole (2,4,6-TBA, (9.25 ± 0.71)×10−2 s-1) > 2-monochloroanisole (2-MCA, (8.00 ± 0.34)×10−2 s-1) > 2,4-dichloroanisole (2,4-DCA, (6.24 ± 0.55)×10−2 s-1) > 2,4,6-trichloroanisole (2,4,6-TCA, (5.05 ± 0.04)×10−2 s-1). The contribution of PAA (mainly composed of free radicals produced from PAA activation by UV) to the degradation rate of chloroanisoles in PAA/UV process ranged from 24 % to 36 %, while 25 % to the degradation rate of bromoanisole. Direct photolysis contributed much more to the removal of bromoanisole (42 %) than chloroanisoles (9–14 %). The inhibition of tert-butanol on degradation demonstrated the existence of ·OH, and superoxide radical and carbon-centered radicals were also probably existed in PAA/UV process. Combining density functional theory (DFT) calculation and products analysis, the degradation pathway of haloanisoles in PAA/UV process were determined. The odor and toxicity evaluation indicated PAA/UV process could reduce olfactory discomfort and health risk of haloanisoles." @default.
- W3040253658 created "2020-07-10" @default.
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- W3040253658 date "2021-01-01" @default.
- W3040253658 modified "2023-10-16" @default.
- W3040253658 title "Kinetic and mechanistic investigation into odorant haloanisoles degradation process by peracetic acid combined with UV irradiation" @default.
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- W3040253658 doi "https://doi.org/10.1016/j.jhazmat.2020.123356" @default.
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