• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Adsorption of heavy metal ions from aqueous solution onto chitosan entrapped CM-cellulose hydrogels synthesized by irradiation
【24h】

Adsorption of heavy metal ions from aqueous solution onto chitosan entrapped CM-cellulose hydrogels synthesized by irradiation

机译：辐射合成的壳聚糖包埋的CM-纤维素水凝胶对水溶液中重金属离子的吸附

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The application of novel environment conscious hydrogels as an adsorbent for heavy metal ions adsorption from aqueous solutions was examined. Chitosan was blended with highly concentrated carboxymethylated cellulose (CM-cellulose) solution to form CM-cellulose/chitosan physical hydrogels, which were crosslinked by additionless irradiation technique. The adsorptive properties of the blend hydrogels against some divalent heavy metal ions were investigated by batch adsorption method. It was found that the addition of chitosan increased the crosslinking degree and the adsorption capacity of the blend hydrogels. As a typical example, experimental data of Cu(II) ion were exploited for kinetic and isothermal evaluations. Copper adsorption process was found to be initially transport-controlled, and its adsorption isotherm can be fitted well into the Langmuir equation. Cu(II) adsorption mechanism can be viewed as the complexation of the Cu(II) with carboxyl groups and amino groups on the CM-cellulose/chitosan gel during the adsorption. From these preliminary evaluations, it is possible to conclude that the CM-cellulose/chitosan blend hydrogels have great potential for applications in water treatment for the removal of heavy metal ions.
机译：研究了新型环保水凝胶作为从水溶液中吸附重金属离子的吸附剂的应用。将壳聚糖与高浓度羧甲基化纤维素（CM-纤维素）溶液混合以形成CM-纤维素/壳聚糖物理水凝胶，通过无添加辐射技术将其交联。采用间歇吸附法研究了共混水凝胶对某些二价重金属离子的吸附性能。发现加入壳聚糖增加了共混水凝胶的交联度和吸附能力。作为一个典型的例子，利用Cu（II）离子的实验数据进行动力学和等温评估。发现铜吸附过程最初受运输控制，并且其吸附等温线可以很好地拟合到Langmuir方程中。 Cu（II）的吸附机理可以看作是在吸附过程中Cu（II）与CM-纤维素/壳聚糖凝胶上的羧基和氨基的络合。从这些初步评估中，可以得出结论，CM-纤维素/壳聚糖共混水凝胶在水处理中去除重金属离子方面具有巨大的潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号