首页> 外文期刊>RSC Advances >Selective separation of ~(152)Eu from a mixture of ~(152)Eu and ~(137)Cs using a chitosan based hydrogel
【24h】

Selective separation of ~(152)Eu from a mixture of ~(152)Eu and ~(137)Cs using a chitosan based hydrogel

机译:使用壳聚糖的水凝胶,从〜(152)EU和〜(137)Cs的混合物中选择分离〜(152)欧欧

获取原文
获取原文并翻译 | 示例
           

摘要

A rapid and novel technique was developed to separate long-lived fission products 152Eu (T1/2 X 13.33 years) and 137Cs (T1/2 30.17 years) using a solid liquid extraction (SLX) technique with a chitosan biopolymer based hydrogel (ChG). In this technique, ChG selectively adsorped 152Eu (-87%) from the mixture of 152Eu and 137Cs without any contamination of 137Cs. Simple back extraction using 1 M aqueous HCl from 152Eu-adsorped-ChG leads to pure 152Eu (-72%). The adsorption behavior of 152Eu on ChG depends on pH and radiation dose. The structural, mechanical, thermal and morphological characterization of ChG was confirmed by FT-IR, solid state NMR, rheology measurement, SEM, TG-DTG, DSC and XRD studies. The rheological study shows a higher value of the storage modulus (G0) than the loss modulus (G00), demonstrating that the rheological behavior in the ChG has a majority of visco elastic solid nature.
机译:开发了一种快速和新颖的技术,以利用具有壳聚糖生物聚合物基水凝胶(CHG)的固体液体萃取(SLX)技术分离长寿裂变产物152EU(T1 / 2 x 13.33岁)和137℃(T1 / 2 30.17岁) 。 在该技术中,CHG在152EU和137℃的混合物中选择性地吸附152EU(-87%),而不会有137℃的任何污染。 使用152U-AdSOLPE-CHG的1M水溶液中的简单背萃取引入纯152EU(-72%)。 152EU对CHG的吸附行为取决于pH和辐射剂量。 CHG的结构,机械,热和形态学表征通过FT-IR,固态NMR,流变学测量,SEM,TG-DTG,DSC和XRD研究证实了CHG。 流变学研究显示储存模量(G0)的损耗模量(G00)的较高值,表明CHG中的流变行为具有大多数粘度弹性型自然性。

著录项

  • 来源
    《RSC Advances》 |2015年第109期|共8页
  • 作者单位

    Department of Chemistry Indian Institute of Engineering Science and Technology Shibpur Howrah-711103 India.;

    Chemical Sciences Division Saha Institute of Nuclear Physics 1/AF Bidhannagar Kolkata-700064 India.;

    Chemical Sciences Division Saha Institute of Nuclear Physics 1/AF Bidhannagar Kolkata-700064 India.;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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