Rapid and controlled transformation of nitrate in water and brine by stabilized iron nanoparticles
文献类型：期刊论文
| 作者 | Xiong, Zhong; Zhao, Dongye; Pan, Gang |
| 刊名 | JOURNAL OF NANOPARTICLE RESEARCH
 |
| 出版日期 | 2009-05 |
| 卷号 | 11期号:4页码:807-819 |
| 关键词 | Denitrification Ion exchange brine Nanoparticles Nitrate Reduction Sodium carboxymethyl cellulose Zero-valent iron (ZVI) Water treatment |
| 中文摘要 | Highly reactive zero-valent iron (ZVI) nanoparticles stabilized with carboxymethyl cellulose (CMC) were tested for reduction of nitrate in fresh water and brine. Batch kinetic tests showed that the pseudo first-order rate constant (k (obs)) with the stabilized nanoparticles was five times greater than that for non-stabilized counterparts. The stabilizer not only increased the specific surface area of the nanoparticles, but also increased the reactive particle surface. The allocation between the two reduction products, NH(4) (+) and N(2), can be manipulated by varying the ZVI-to-nitrate molar ratio and/or applying a Cu-Pd bimetallic catalyst. Greater CMC-to-ZVI ratios lead to faster nitrate reduction. Application of a 0.05 M HEPES buffer increased the k (obs) value by 15 times compared to that without pH control. Although the presence of 6% NaCl decreased k (obs) by 30%, 100% nitrate was transformed within 2 h in the saline water. The technology provides a powerful alternative for treating water with concentrated nitrate such as ion exchange brine. |
| WOS记录号 | WOS:000264838100007 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21611]  |
| 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 controlled transformation of nitrate in water and brine by stabilized iron nanoparticles[J]. JOURNAL OF NANOPARTICLE RESEARCH,2009,11(4):807-819. |
| APA | Xiong, Zhong,Zhao, Dongye,&Pan, Gang.(2009).Rapid and controlled transformation of nitrate in water and brine by stabilized iron nanoparticles.JOURNAL OF NANOPARTICLE RESEARCH,11(4),807-819. |
| MLA | Xiong, Zhong,et al."Rapid and controlled transformation of nitrate in water and brine by stabilized iron nanoparticles".JOURNAL OF NANOPARTICLE RESEARCH 11.4(2009):807-819. |
入库方式： OAI收割
来源：生态环境研究中心
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