| 涂铁石英砂吸附水中Cr（Ⅵ）的研究 |
| |
| 引用本文： | 刘微微,吴纯德,叶建.涂铁石英砂吸附水中Cr（Ⅵ）的研究[J].四川环境,2009,28(4):20-22,27. |
| |
| 作者姓名： | 刘微微 吴纯德 叶建 |
| |
| 作者单位： | 华南理工大学环境科学与工程学院,广州,510006 |
| |
| 摘 要： | 采用静态吸附和动态过滤的试验方法研究了涂铁石英砂（IOCS）滤料对水中Cr（Ⅵ）的去除，并探讨其吸附机理。研究结果表明，Cr（Ⅵ）在IOCS上的吸附平衡符合Langmuir吸附模型。经氧化铁改性滤料表面电位带正电荷，对水中的Cr（Ⅵ）有良好的去除效果。pH值对Cr（Ⅵ）的去除影响较大，随着溶液的pH值升高，滤料表面电位减小，Cr（Ⅵ）的吸附率也减小。IOCS滤料去除Cr（Ⅵ）机理主要为静电吸附。
|
| 关 键 词： | 过滤 表面电位 Cr(Ⅵ) 涂铁石英砂 |
Adsorption of Cr(Ⅵ) from Aqueous Solution Using Iron Oxide Coated Sand |
| |
| LIU Wei-wei,WU Chun-de,YE Jian.Adsorption of Cr(Ⅵ) from Aqueous Solution Using Iron Oxide Coated Sand[J].Sichuan Environment,2009,28(4):20-22,27. |
| |
| Authors: | LIU Wei-wei WU Chun-de YE Jian |
| |
| Institution: | ( College of Environmental Science ＆ Engineering, South China University of Technology, Guangzhou 510006, China) |
| |
| Abstract: | The technology including static adsorption and dynamic fikration was adopted to study the removal of Cr（Ⅵ） from water using iron oxide coated sand （IOCS） as filtration media as well as its mechanism. The results showed that the adsorption of Cr（Ⅵ） on 10CS can be fitted to the Langmuir models. IOCS has a favorable filtrating effect attributed to the positive charge on its surface. The pH value highly affected the Cr（Ⅵ） removal. Actually, the adsorption rate of Cr（Ⅵ） decreased with the increase of pH value and sequential decrease of potential on filtration media surface. This study indicates that electrostatic interaction is the dominating mechanism of Cr（Ⅵ） adsorption on IOCS. |
| |
| Keywords: | Filtrate surface potential Cr（Ⅵ） iron oxide coated sand |
| 本文献已被 维普 万方数据 等数据库收录！ |
