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Transformation of 2,4-dichlorophenol by H2O2/UV-C, Fenton and photo-Fenton processes: Oxidation products and toxicity evolution
被引:95
作者:
Karci, Akin
[2
]
Arslan-Alaton, Idil
[1
]
Olmez-Hanci, Tugba
[1
]
Bekbolet, Miray
[2
]
机构:
[1] Istanbul Tech Univ, Fac Civil Engn, Dept Environm Engn, TR-34469 Istanbul, Turkey
[2] Bogazici Univ, Inst Environm Sci, TR-34342 Istanbul, Turkey
关键词:
2,4-Dichlorophenol (2,4 DCP);
Acutetoxicity;
Fenton;
Photo-Fenton;
H2O2/UV-C;
Oxidation product;
HYDROGEN-PEROXIDE;
ELECTROCHEMICAL OXIDATION;
ULTRAVIOLET-RADIATION;
PROCESS OPTIMIZATION;
AQUEOUS-SOLUTIONS;
P-CHLOROPHENOL;
ELECTRO-FENTON;
DAPHNIA-MAGNA;
DEGRADATION;
PHENOL;
D O I:
10.1016/j.jphotochem.2012.01.003
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
In the present study, H2O2/UV-C, Fenton and photo-Fenton treatment of 2,4-dichlorophenol was compared in terms of oxidation products and acute toxicity. The oxidation products were identified by gas chromatography-mass spectroscopy, high performance liquid chromatography and ion chromatography, whereas changes in acute toxicity were evaluated by the Vibrio fischeri luminescence inhibition assay. H2O2/UV-C and photo-Fenton processes ensured complete 2,4-dichlorophenolremoval, detoxification and significant mineralization. Hydroquinone and formic acid were identified as the common oxidation products of the studied advanced oxidation processes investigated. 3,5-dichloro-2-hydroxybenzaldehyde, phenol, 4-chlorophenol and 2,5-dichlorohydroquinone were identified as the additional H2O2/UV-C oxidation products of 2,4-dichlorophenol. Acute toxicity decreased with decreasing 2,4-dichlorophenol and increasing chloride release. (C) 2012 Elsevier B.V. All rights reserved.
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页码:65 / 73
页数:9
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