Rapid and complete destruction of perchlorate in water and ion-exchange brine using stabilized zero-valent iron nanoparticles
文献类型：期刊论文
| 作者 | Xiong, Zhong ; Zhao, Dongye ; Pan, Gang |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2007-08 |
| 卷号 | 41期号:15页码:3497-3505 |
| 关键词 | degradation ion-exchange brine nanoparticle perchlorate reduction zero-valent iron water treatment |
| 英文摘要 | Perchlorate has emerged as a widespread contaminant in groundwater and surface water. Because of the unique chemistry of perchlorate, it has been challenging to destroy perchlorate. This study tested the feasibility of using a new class of stabilized zero-valent iron (ZVI) nanoparticles for complete transformation of perchlorate in water or ionexchange brine. Batch kinetic tests showed that at an iron dosage of 1.8gL(-1) and at moderately elevated temperatures (90-95 degrees C), similar to 90% of perchlorate in both fresh water and a simulated ion-exchange brine (NaCl = 6% (w/w)) was destroyed within 7h. An activation energy (E-a) of 52.59 +/- 8.41 kJ mol(-1) was determined for the reaction. Kinetic tests suggested that Cl(VII) in perchlorate was rapidly reduced to chloride without accumulation of any intermediate products. Based on the surface-area-normalized rate constant kSA, starch-and CMC-stabilized ZVI nanoparticles degraded perchlorate 1.8 and 3.3 times, respectively, faster than non-stabilized ZVI particles. Addition of a metal catalyst (Al, Cu, Co, Ni, Pd, or Re) did not show any reaction improvement. This technology provides an effective method for complete destruction of perchlorate in both contaminated water and brine. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000248634600032 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22526]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Xiong, Zhong,Zhao, Dongye,Pan, Gang. Rapid and complete destruction of perchlorate in water and ion-exchange brine using stabilized zero-valent iron nanoparticles[J]. WATER RESEARCH,2007,41(15):3497-3505. |
| APA | Xiong, Zhong,Zhao, Dongye,&Pan, Gang.(2007).Rapid and complete destruction of perchlorate in water and ion-exchange brine using stabilized zero-valent iron nanoparticles.WATER RESEARCH,41(15),3497-3505. |
| MLA | Xiong, Zhong,et al."Rapid and complete destruction of perchlorate in water and ion-exchange brine using stabilized zero-valent iron nanoparticles".WATER RESEARCH 41.15(2007):3497-3505. |
入库方式： OAI收割
来源：生态环境研究中心
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