Dechlorination of gamma-hexachlorocyclohexane by zero-valent metallic iron
文献类型：期刊论文
| 作者 | Wang, ZY ; Peng, PA ; Huang, WL |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009 |
| 卷号 | 166期号:40577页码:992-997 |
| 关键词 | Zero-valent iron Dechlorination gamma-HCH Kinetics |
| ISSN号 | 0304-3894 |
| 通讯作者 | pinganp@gig.ac.cn |
| 中文摘要 | This study investigated the rates and pathways of gamma-hexachlorocyclohexane (gamma-HCH) dechlorination by granular zero-valent iron under different pH, iron dosage and temperature conditions. It was found that gamma-HCH was rapidly reduced to benzene and chlorobenzene (CB) with benzene as the major product and that the dechlorination likely follows three steps of dichloroelimination to benzene, or two steps of dichloroelinninations and one step of dehydrohalogenation to CB. The calculated pseudo-first-order rate of gamma-HCH degradation was 0.0125 min(-1) at pH 6.73,25 degrees C and 10 g L-1 iron dosage, corresponding to 55.5 min of half-life. It was also found that the rate of gamma-HCH dechlorination increases as a function of reaction temperature and zero-valent iron dosage and decreases as a function of solution pH. The calculated activation energy is 33.5 kJ mol(-1) at pH 6.73, which is much lower than that of dehydrohalogenation facilitated by hydroxyl under basic conditions. The study suggested that zero-valent iron could be used to effectively and efficiently transform gamma-HCH. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering, Environmental; Engineering, Civil; Environmental Sciences |
| 收录类别 | SCI |
| 原文出处 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000266947000060 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4618]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, ZY,Peng, PA,Huang, WL. Dechlorination of gamma-hexachlorocyclohexane by zero-valent metallic iron[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,166(40577):992-997. |
| APA | Wang, ZY,Peng, PA,&Huang, WL.(2009).Dechlorination of gamma-hexachlorocyclohexane by zero-valent metallic iron.JOURNAL OF HAZARDOUS MATERIALS,166(40577),992-997. |
| MLA | Wang, ZY,et al."Dechlorination of gamma-hexachlorocyclohexane by zero-valent metallic iron".JOURNAL OF HAZARDOUS MATERIALS 166.40577(2009):992-997. |
入库方式： OAI收割
来源：南海海洋研究所
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