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
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2012年 / 230卷 / 01期
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.
引用
收藏
页码：65 / 73
页数：9
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