|
|||||
|
|
Removal of copper ions from aqueous solution by calcium alginateimmobilized kaolin |
|
| Authors: | Yanhui Li Bing Xi Quansheng Zhao Fuqiang Liu Pan Zhang Qiuju Du Dechang Wang Da Li Zonghua Wang Yanzhi Xia |
| Affiliation: | 1. Laboratory of Fiber Materials and Modern Textile,The Growing Base for State Key Laboratory,Qingdao University,Qingdao 266071,China 2. Laboratory of Fiber Materials and Modern Textile,The Growing Base for State Key Laboratory,Qingdao University,Qingdao 266071,China;Department of Environmental Science and Engineering,Qingdao University,Qingdao 266071,China 3. Department of Environmental Science and Engineering,Qingdao University,Qingdao 266071,China |
| Abstract: | Kaolin has been widely used as an adsorbent to remove heavy metal ions from aqueous solutions. However, the lower heavy metaladsorption capacity of kaolin limits its practical application. A novel environmental friendly material, calcium alginate immobilizedkaolin (kaolin/CA), was prepared using a sol-gel method. The e ects of contact time, pH, adsorbent dose, and temperature on Cu2+adsorption by kaolin/CA were investigated. The Langmuir isotherm was used to describe the experimental adsorption, the maximumCu2+ adsorption capacity of the kaolin/CA reached up to 53.63 mg/g. The thermodynamic studies showed that the adsorption reactionwas a spontaneous and endothermic process. |
| Keywords: | kaolin calcium alginate copper adsorption, immobilization |
| 本文献已被 CNKI 维普 万方数据 PubMed 等数据库收录！ | |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 | |
| 点击此处可从《环境科学学报(英文版)》下载全文 | |