Efficient transformation of ddts with persulfate activation by zero-valent iron nanoparticles: a mechanistic study
文献类型：期刊论文
| 作者 | Zhu, Changyin1,2; Fang, Guodong1; Dionysiou, Dionysios D.3; Liu, Cun1; Gao, Juan1; Qin, Wenxiu1,2; Zhou, Dongmei1 |
| 刊名 | Journal of hazardous materials
 |
| 出版日期 | 2016-10-05 |
| 卷号 | 316页码:232-241 |
| 关键词 | Persulfate Activation Nano-fe Free radicals Ddt degradation |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2016.05.040 |
| 通讯作者 | Fang, guodong(gdfang@issas.ac.cn) ; Zhou, dongmei(dmzhou@issas.ac.cn) |
| 英文摘要 | In this study, persulfate (ps) activation by nano-fe-0 was used to degrade dichlorodiphenyltrichloroethane (ddt), and the mechanism of this process was elucidated with epr, gc-ms and free-radical quenching studies. it was found that ddt was degraded efficiently in ps/nano-fe-0, and gc-ms analysis showed that benzoic acid, benzyl alcohol, dichlorobenzophenone and 2,2-bis(p-chlorophenyl)-ethane were the dominant products of ddt degradation, while only dechlorination products (ddd and dde) were observed in nano-fe-0 without persulfate. epr results showed that persulfate activation by nano-fe-0 led to the production of more sulfate radicals and hydroxyl radicals, which accounted for ddt degradation. but the free radical quenching studies suggested that the addition of ethanol to ps/nano-fe-0 favored the reductive dechlorination of ddt, which was ascribed that the formed ethanol radical ((ch)-c-center dot(ch3)oh) enhanced the reductive dechlorination of ddt. furthermore, the nano-fe-0 loading not only affected the degradation efficiency of ddt, but also influenced the intermediate product distribution of ddt degradation in the ps/nano-fe-0 process. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | SITU CHEMICAL OXIDATION ; NANOSCALE ZEROVALENT IRON ; FREE-RADICAL REACTIONS ; ACID ORANGE 7 ; ORGANIC-COMPOUNDS ; SULFATE RADICALS ; AQUEOUS-SOLUTION ; CHLORIDE-ION ; FERROUS ION ; DEGRADATION |
| 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:000379564700027 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374685 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fang, Guodong; Zhou, Dongmei |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA |
| 推荐引用方式 GB/T 7714 | Zhu, Changyin,Fang, Guodong,Dionysiou, Dionysios D.,et al. Efficient transformation of ddts with persulfate activation by zero-valent iron nanoparticles: a mechanistic study[J]. Journal of hazardous materials,2016,316:232-241. |
| APA | Zhu, Changyin.,Fang, Guodong.,Dionysiou, Dionysios D..,Liu, Cun.,Gao, Juan.,...&Zhou, Dongmei.(2016).Efficient transformation of ddts with persulfate activation by zero-valent iron nanoparticles: a mechanistic study.Journal of hazardous materials,316,232-241. |
| MLA | Zhu, Changyin,et al."Efficient transformation of ddts with persulfate activation by zero-valent iron nanoparticles: a mechanistic study".Journal of hazardous materials 316(2016):232-241. |
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来源：中国科学院大学
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