| Removal of Cu(II) from aqueoussolution by adsorption onto acid-activatedpalygorskite | |
| Department | 环境材料与生态化学研究发展中心 |
Chen H(陈浩); Zhao YG(赵耀刚); Wang AQ(王爱勤) ; 王爱勤 aqwang@licp.cas.cn
| |
| 2007 | |
| Source Publication | Journal of Hazardous Materials
 |
| ISSN | 0304-3894 |
| Volume | 149Issue:2Pages:346-354 |
| Abstract | A series of activatedpalygorskite clay by HCl with different concentrations was prepared and applied as adsorbents for removal of Cu(II) from aqueoussolutions. The effects of contact time, adsorbent dosages and pHs of suspension on the adsorption capacities for Cu(II) were investigated. The results showed that adsorption capacity of activated palygorskites increased with increasing the HCl concentration and the maximum adsorption capacity with 32.24 mg/g for Cu(II) is obtained at 12 mol/L of HCl concentration. The variations in IR spectra and pH of solution after adsorption Cu(II) confirmed that the numerous amount of silanol groups (Si–OH) originated by acid treatment were mainly responsible for Cu(II) adsorption onto acid-activatedpalygorskite. Kinetic studies indicated that the adsorption mechanisms in the Cu(II)/acid-activatedpalygorskite system followed the pseudo-second-order kinetic model with a relatively small contribution of film diffusion. Equilibrium data fitted well with Freundlich isotherm model compared to Langmuir isotherm model, indicating that adsorption takes place on heterogeneous surfaces of the acid-activatedpalygorskite. Adsorption–desorption studies presented that activatedpalygorskite has lower adsorption and desorption efficiencies using Cu(CH3COO)2 than that of other inorganic copper salts, such as CuSO4, Cu(NO3)2, and CuCl2. |
| Keyword | Palygorskite Clay Acid-activation Adsorption Copper Kinetic Isotherm |
| Subject Area | 功能高分子 |
| Funding Organization | 甘肃省科技攻关项目(2GS052-A52-002-07) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/213 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | 王爱勤 aqwang@licp.cas.cn |
| Recommended Citation GB/T 7714 | Chen H,Zhao YG,Wang AQ,et al. Removal of Cu(II) from aqueoussolution by adsorption onto acid-activatedpalygorskite[J]. Journal of Hazardous Materials,2007,149(2):346-354. |
| APA | 陈浩,赵耀刚,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2007).Removal of Cu(II) from aqueoussolution by adsorption onto acid-activatedpalygorskite.Journal of Hazardous Materials,149(2),346-354. |
| MLA | 陈浩,et al."Removal of Cu(II) from aqueoussolution by adsorption onto acid-activatedpalygorskite".Journal of Hazardous Materials 149.2(2007):346-354. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20071492346354.pdf（412KB） | 开放获取 | License | View Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment