Reductive dechlorination of hexachlorobenzene by Cu/Fe bimetal in the presence of nonionic surfactant
文献类型：期刊论文
| 作者 | Zheng, Zhonghua1; Yuan, Songhu1,2; Liu, Yang1; Lu, Xiaohua1; Wan, Jinzhong1; Wu, Xiaohui1; Chen, Jing1 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009-10-30 |
| 卷号 | 170期号:2-3页码:895-901 |
| 关键词 | Zero-valent iron Hexachlorobenzene Dechlorination Surfactants |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2009.05.052 |
| 通讯作者 | Yuan, Songhu(yuansonghu622@hotmail.com) |
| 英文摘要 | This study investigated the enhancement of nonionic surfactant (TritonX-100, TX-100) on the reductive dechlorination of hexachlorobenzene (HCB) by microscale Cu/Fe bimetal. HCB reduction by Cu/Fe without TX-100, in aqueous TX-100, adsorbed with TX-100 and prepared with TX-100 was compared. Results showed that HCB reduction by Cu/Fe in aqueous TX-100 increased with increasing TX-100 concentration, reached a maximum of 98.6% when aqueous TX-100 concentration attained its critical micelle concentration (CMC). and decreased with the further increase in TX-100 concentration. The mechanism was suggested as the increased HCB mass transport at low TX-100 concentration below CIVIC and the coverage of reactive sites at high TX-100 concentration above CMC. The greatest reduction was achieved by Cu/Fe in the presence of 0.2 mM TX-100, followed by Cu/Fe adsorbed and prepared with 0.2 mM TX-100. Pentachlorobenzene and tetrachlorobenzene were found as the main dechlorination intermediates. Successive reduction by Cu/Fe in aqueous TX-100 solution could be maintained above 98% for four cycles. It is an alternative to use nonionic surfactants to enhance the reductive dechlorination of hydrophobic polychlorinated aromatic hydrocarbons (PCAH) by Cu/Fe bimetal. (C) 2009 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | ZERO-VALENT IRON ; NANOSCALE ZEROVALENT IRON ; POLYCHLORINATED-BIPHENYLS ; GRANULAR IRON ; HUMIC-ACID ; PARTICLES ; DEHALOGENATION ; TRANSPORT ; SOILS ; METAL |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000270310500051 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558747 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Yuan, Songhu |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Environm Sci Res Inst, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Zhonghua,Yuan, Songhu,Liu, Yang,et al. Reductive dechlorination of hexachlorobenzene by Cu/Fe bimetal in the presence of nonionic surfactant[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,170(2-3):895-901. |
| APA | Zheng, Zhonghua.,Yuan, Songhu.,Liu, Yang.,Lu, Xiaohua.,Wan, Jinzhong.,...&Chen, Jing.(2009).Reductive dechlorination of hexachlorobenzene by Cu/Fe bimetal in the presence of nonionic surfactant.JOURNAL OF HAZARDOUS MATERIALS,170(2-3),895-901. |
| MLA | Zheng, Zhonghua,et al."Reductive dechlorination of hexachlorobenzene by Cu/Fe bimetal in the presence of nonionic surfactant".JOURNAL OF HAZARDOUS MATERIALS 170.2-3(2009):895-901. |
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来源：南京土壤研究所
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