Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/ sodium humate composite hydrogels
文献类型：期刊论文
| 作者 | Wang AQ(王爱勤) ; Zhang JP(张俊平)
|
| 刊名 | Environmental Technology
 |
| 出版日期 | 2011 |
| 卷号 | 32期号:5页码:523-531 |
| 关键词 | composite hydrogels adsorption Pb(II) attapulgite sodium humate |
| ISSN号 | 0959-3330 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | 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. |
| 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 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://210.77.64.217/handle/362003/85]  |
| 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,Zhang JP. 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 | 王爱勤,&张俊平.(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 | 王爱勤,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. |
入库方式： OAI收割
来源：兰州化学物理研究所
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