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Tytuł:
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Degradation of Acetaminophen via UVA-induced advanced oxidation processes (AOPs). Involvement of different radical species: HO, SO 4 and HO 2 /O 2 .
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Autorzy:
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Wang X; Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China; Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
Brigante M; Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
Dong W; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
Wu Z; Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China.
Mailhot G; Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France. Electronic address: .
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Źródło:
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Chemosphere [Chemosphere] 2020 Nov; Vol. 258, pp. 127268. Date of Electronic Publication: 2020 Jun 12.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Oxford : Elsevier Science Ltd
Original Publication: Oxford, New York, : Pergamon Press.
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MeSH Terms:
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Ultraviolet Rays*
Acetaminophen/*analysis
Hydrogen Peroxide/*chemistry
Oxidants/*chemistry
Sodium Compounds/*chemistry
Sulfates/*chemistry
Water Pollutants, Chemical/*analysis
Bismuth/chemistry ; Catalysis ; Hydroxyl Radical/chemistry ; Models, Theoretical ; Oxidation-Reduction
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Contributed Indexing:
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Keywords: Advanced oxidation process; Photocatalysis; Radicals; Synergistic effects; UVA
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Substance Nomenclature:
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0 (Oxidants)
0 (Sodium Compounds)
0 (Sulfates)
0 (Water Pollutants, Chemical)
3352-57-6 (Hydroxyl Radical)
362O9ITL9D (Acetaminophen)
BBX060AN9V (Hydrogen Peroxide)
J49FYF16JE (sodium persulfate)
U015TT5I8H (Bismuth)
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Entry Date(s):
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Date Created: 20200623 Date Completed: 20200925 Latest Revision: 20200925
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Update Code:
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20240105
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DOI:
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10.1016/j.chemosphere.2020.127268
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PMID:
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32569955
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In this work, UVA radiation that is part of solar light is taken as the irradiation source and radicals (HO, SO 4 - and HO 2 /O 2 - ) are generated through activation of hydrogen peroxide (H 2 O 2 ), sodium persulfate (Na 2 S 2 O 8 ) and Bismuth catalyst (BiOCl), respectively. The distinguished performance in removing acetaminophen (ACTP), a model pharmaceutical pollutant, by these three radicals was compared for the first time. Effect of pH, halide ions concentration and interfacial mechanism have been investigated in detail. Interestingly, results show that heterogeneous UVA/BiOCl process has higher degradation efficiency than homogeneous UVA/H 2 O 2 and UVA/Na 2 S 2 O 8 systems whatever the solution's pH. To explain these results, second order reaction rate constant (k radical, ACTP ) have been determined with laser flash photolysis (LFP) or radical scavenging experiments. The strongly interfacial-depended HO 2 /O 2 - radicals have the lowest second order rate constant with ACTP but highest steady state concentration. BiOCl is much easier activated by UVA, and outstanding ACTP mineralization can be achieved. Combination of BiOCl and Na 2 S 2 O 8 exhibits synergistic effects rather than antagonism effects with H 2 O 2 . This study highlights the relative effective utilization of solar light through interfacial directed BiOCl photocatalysis and its synergistic effects with traditional oxidants.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
