Humic acid and metal ions accelerating the dechlorination of 4-chlorobiphenyl by nanoscale zero-valent iron
文献类型：期刊论文
| 作者 | Wang, Yu1,2; Zhou, Dongmei1; Wang, Yujun1; Zhu, Xiangdong1,2; Jin, Shengyang1 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
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| 出版日期 | 2011 |
| 卷号 | 23期号:8页码:1286-1292 |
| 关键词 | 4-chlorobiphenyl nanoscale zero-valent iron humic acid metal ions dechlorination |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/S1001-0742(10)60543-8 |
| 通讯作者 | Zhou, Dongmei(dmzhou@issas.ac.cn) |
| 英文摘要 | Transformation of polychlorinated biphenyls (PCBs) by zero-valent iron represents one of the latest innovative technologies for environmental remediation. The dechlorination of 4-chlorobiphenyl (4-ClBP) by nanoscale zero-valent iron (NZVI) in the presence of humic acid or metal ions was investigated. The results showed that the dechlorination of 4-ClBP by NZVI increased with decreased solution pH. When the initial pH value was 4.0, 5.5, 6.8, and 9.0, the dechlorination efficiencies of 4-ClBP after 48 hr were 53.8%, 47.8%, 35.7%, and 35.6%, respectively. The presence of humic acid inhibited the reduction of 4-ClBP in the first 4 hr, and then significantly accelerated the dechlorination by reaching 86.3% in 48 hr. Divalent metal ions, Co(2+), Cu(2+), and Ni(2+), were reduced and formed bimetals with NZVI, thereby enhanced the dechlorination of 4-ClBP. The dechlorination percentages of 4-ClBP in the presence of 0.1 mmol/L Co(2+), Cu(2+) and Ni(2+) were 66.1%, 66.0% and 64.6% in 48 hr, and then increased to 67.9%, 71.3% and 73.5%, after 96 hr respectively. The dechlorination kinetics of 4-ClBP by the NZVI in all cases followed pseudo-first order model. The results provide a basis for better understanding of the dechlorination mechanisms of PCBs in real environment. |
| 收录类别 | SCI |
| WOS关键词 | POLYCHLORINATED-BIPHENYLS ; ZEROVALENT IRON ; CORROSION PRODUCTS ; ACTIVATED CARBON ; ORGANIC-MATTER ; REDUCTION ; ADSORPTION ; PARTICLES ; KINETICS ; PCBS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000294315100008 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559055 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhou, Dongmei |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yu,Zhou, Dongmei,Wang, Yujun,et al. Humic acid and metal ions accelerating the dechlorination of 4-chlorobiphenyl by nanoscale zero-valent iron[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(8):1286-1292. |
| APA | Wang, Yu,Zhou, Dongmei,Wang, Yujun,Zhu, Xiangdong,&Jin, Shengyang.(2011).Humic acid and metal ions accelerating the dechlorination of 4-chlorobiphenyl by nanoscale zero-valent iron.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(8),1286-1292. |
| MLA | Wang, Yu,et al."Humic acid and metal ions accelerating the dechlorination of 4-chlorobiphenyl by nanoscale zero-valent iron".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.8(2011):1286-1292. |
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来源：南京土壤研究所
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