Removal of Cd(II) from aqueous solution by a composite hydrogel based on attapulgite
文献类型：期刊论文
| 作者 | Wang AQ(王爱勤)
|
| 刊名 | Environmental Technology
 |
| 出版日期 | 2010 |
| 卷号 | 31期号:7页码:745-753 |
| 关键词 | composite hydrogel attapulgite cadmium adsorption mechanism thermodynamic parameters |
| ISSN号 | 0959-3330 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | Chitosan-g-poly(acrylic acid)/attapulgite composite with 30 wt% attapulgite content was used to remove Cd(II) from aqueous solutions. The parameters influencing the adsorption were investigated. When Cd(CH3COO)2was used as the solute of the solution, the equilibrium adsorption capacity was evidently larger than that of the other three cadmium salts (Cd(NO3)2, CdCl2, CdSO4). Results from kinetic experiments showed that the rate of Cd(II) adsorption on the composite was quite fast, more than 90% of Cd(II) adsorption occurred within the initial 3 min, and the adsorption equilibrium may be reached within 10 min. The adsorption process can be well described by the pseudosecond-order kinetic model. The equilibrium adsorption isotherm was fitted for not only the Langmuir model but also the Freundlich model. Fourier transform infrared spectra before and after adsorption of Cd(II) on the composite showed that complexation was considered as the main mechanism. To evaluate the reuse value of the composite, a consecutive adsorption–desorption process was performed five times, and the results implied that the composite has the potential for regeneration and reuse. |
| 学科主题 | 功能高分子 |
| 收录类别 | SCI |
| 资助信息 | 国家自然科学基金项目(20877077) |
| 语种 | 英语 |
| WOS记录号 | WOS:000278002100003 |
| 公开日期 | 2012-09-02 |
| 源URL | [http://210.77.64.217/handle/362003/126]  |
| 专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
| 推荐引用方式 GB/T 7714 | Wang AQ. Removal of Cd(II) from aqueous solution by a composite hydrogel based on attapulgite[J]. Environmental Technology,2010,31(7):745-753. |
| APA | 王爱勤.(2010).Removal of Cd(II) from aqueous solution by a composite hydrogel based on attapulgite.Environmental Technology,31(7),745-753. |
| MLA | 王爱勤."Removal of Cd(II) from aqueous solution by a composite hydrogel based on attapulgite".Environmental Technology 31.7(2010):745-753. |
入库方式： OAI收割
来源：兰州化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。