| Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/ sodium humate composite hydrogels | |
| Department | 环境材料与生态化学研究发展中心 |
Zhang JP(张俊平) ; Jin YL(金叶玲); Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
| |
| 2011 | |
| Source Publication | Environmental Technology
 |
| ISSN | 0959-3330 |
| Volume | 32Issue:5Pages:523-531 |
| Abstract | A series of novel granular chitosang -poly(acrylic acid)/attapulgite/sodium humate (CTS-g -PAA/APT/SH) composite hydrogels were successfully prepared by one-step free radical graft polymerization and applied as adsorbents for the removal of Pb(II) from aqueous solution. The effects of adsorbent composition (including the contents of APT, SH and CTS) on adsorption capacity and adsorption rate were investigated in detail. Results from kinetic experiments showed that the rate of Pb(II) adsorption on the composite hydrogels was quite fast, that more than 90% of the equilibrium adsorption capacity occurs within two minutes and that the adsorption equilibrium could be achieved within 10 minutes. The adsorption kinetics fit well with the pseudo-second order equation. The introduced SH is helpful for both adsorption capacity and adsorption rate. The -COOH and -COO? of PAA, -NH2 of CTS, Ph-O? and -COO? of SH, as well as cation exchange and Si-OH of APT, participate in adsorption of Pb(II). The synergistic effect of these groups is responsible for the high adsorption capacity and rate. |
| Keyword | Composite Hydrogels Adsorption Pb(Ii) Attapulgite Sodium Humate |
| Subject Area | 功能高分子 |
| Funding Organization | 国家自然科学基金项目(20877077) |
| 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/362003/85 |
| 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 | Zhang JP,Jin YL,Wang AQ,et al. Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/ sodium humate composite hydrogels[J]. Environmental Technology,2011,32(5):523-531. |
| APA | 张俊平,金叶玲,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2011).Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/ sodium humate composite hydrogels.Environmental Technology,32(5),523-531. |
| MLA | 张俊平,et al."Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/ sodium humate composite hydrogels".Environmental Technology 32.5(2011):523-531. |
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| 2011325523531.pdf（2622KB） | 开放获取 | License | View Application Full Text | |||
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