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Degradation of 17 alpha-ethinylestradiol in aqueous solution by ozonation
Zhang, X; Chen, PY; Wu, F; Deng, NS; Liu, JT; Fang, T; Deng, NS, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China
2006-05-20
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume133Issue:1-3Pages:291-298
AbstractThis study investigates the ozonation of 17 alpha-ethinylestradiol (EE2) in aqueous solution. The affecting factors on the degradation of EE2 were studied and described in details, such as initial EE2 concentration, initial pH value and ozone concentration. In addition, some parameters such as pH. electrical conductivity, mineralization efficiency and degradation products were monitored during the process. The mineralization efficiency of EE2 could reach 53.9%. During the ozonation process the rapid decrease of pH and the sharp increase of electrical conductivity indicated the fort-nation of acidic by-products, small fragments and ions which were confirmed by high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GUMS) analysis. Results showed that there were intermediate products of smaller molecule with higher polarity produced during the course of EE2 degradation. Then a possible reaction pathway for EE2 degradation involving all intermediates detected is proposed. During the ozonation process EE2 was first oxidized into hydroxyl-semiquinone isomers which were subsequently degraded into low molecular weight compounds such as oxalic acid, malonate, glutarate, and so on. Furthermore. these organic acids are easily oxidized by ozone into carbon dioxide (CO2). This work shows that ozonation process is promising for the removal of EE2. The results can provide some useful information for the potential treatment of EE2 by ozonation in aqueous solution. (c) 2005 Elsevier B.V. All rights reserved.; This study investigates the ozonation of 17 alpha-ethinylestradiol (EE2) in aqueous solution. The affecting factors on the degradation of EE2 were studied and described in details, such as initial EE2 concentration, initial pH value and ozone concentration. In addition, some parameters such as pH. electrical conductivity, mineralization efficiency and degradation products were monitored during the process. The mineralization efficiency of EE2 could reach 53.9%. During the ozonation process the rapid decrease of pH and the sharp increase of electrical conductivity indicated the fort-nation of acidic by-products, small fragments and ions which were confirmed by high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GUMS) analysis. Results showed that there were intermediate products of smaller molecule with higher polarity produced during the course of EE2 degradation. Then a possible reaction pathway for EE2 degradation involving all intermediates detected is proposed. During the ozonation process EE2 was first oxidized into hydroxyl-semiquinone isomers which were subsequently degraded into low molecular weight compounds such as oxalic acid, malonate, glutarate, and so on. Furthermore. these organic acids are easily oxidized by ozone into carbon dioxide (CO2). This work shows that ozonation process is promising for the removal of EE2. The results can provide some useful information for the potential treatment of EE2 by ozonation in aqueous solution. (c) 2005 Elsevier B.V. All rights reserved.
SubtypeArticle
Keyword17 Alpha-ethinylestradiol (Ee2) Ozonation Hydroxyl Radical Intermediate Mechanism
DepartmentWuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Subject AreaEngineering ; Environmental ; Civil ; Engineering ; Environmental Sciences
DOI10.1016/j.jhazmat.2005.10.026
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS IDWOS:000237825000040
WOS KeywordPRODUCT IDENTIFICATION ; ESTROGENIC ACTIVITY ; OXIDATION-PRODUCTS ; RATE CONSTANTS ; WATER ; OZONE ; PHARMACEUTICALS ; PHOTOCATALYSIS ; PRETREATMENT ; PATHWAY
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Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8960
Collection期刊论文
Corresponding AuthorDeng, NS, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China
Affiliation1.Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Zhang, X,Chen, PY,Wu, F,et al. Degradation of 17 alpha-ethinylestradiol in aqueous solution by ozonation[J]. JOURNAL OF HAZARDOUS MATERIALS,2006,133(1-3):291-298.
APA Zhang, X.,Chen, PY.,Wu, F.,Deng, NS.,Liu, JT.,...&Deng, NS, Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China.(2006).Degradation of 17 alpha-ethinylestradiol in aqueous solution by ozonation.JOURNAL OF HAZARDOUS MATERIALS,133(1-3),291-298.
MLA Zhang, X,et al."Degradation of 17 alpha-ethinylestradiol in aqueous solution by ozonation".JOURNAL OF HAZARDOUS MATERIALS 133.1-3(2006):291-298.
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