Cesium removal from acidic solution by 1,3-alternate calix[4]arene-2,4-crown-6 impregnated sorbents

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-09-12 DOI:10.1007/s10967-024-09738-6

Zhen Xu, Tengfei Cui, Qing Chang, Haolong Wang, Qiang Jin, Zongyuan Chen, Zhijun Guo

{"title":"Cesium removal from acidic solution by 1,3-alternate calix[4]arene-2,4-crown-6 impregnated sorbents","authors":"Zhen Xu, Tengfei Cui, Qing Chang, Haolong Wang, Qiang Jin, Zongyuan Chen, Zhijun Guo","doi":"10.1007/s10967-024-09738-6","DOIUrl":null,"url":null,"abstract":"The removal of radioactive Cs(I) is critical for the management of radioactive liquid waste. In this study, four sorbents impregnated with different 1,3-alternate calix[4]arane-2,4-crown-6 ligands on XAD-7 resin were prepared for Cs(I) selective removal from strongly acidic aqueous solution. The ligands differ in the substituent groups (benzyl, 4-tert-butyl benzyl, isopropyl, and n-octyl) at 1,3-alternate positions of the supramolecular platform of calix[4]arane-2,4-crown-6 ether. The sorption of Cs(I) was investigated as a function of contact time, HNO3 concentration, ligand concentration and temperature using a batch method. The experimental results indicated that Cs(I) sorption on the sorbents is rapid and reaches sorption steady state in 30 min. All sorbents exhibit excellent Cs(I) sorption selectivity in a simulated high-level liquid waste (HLLW). Cs(I) sorption on the sorbents is an exothermic process. The substituent groups of the ligands affect both the kinetics and the thermodynamics of Cs(I) sorption on the sorbents. The sorbents impregnated with benzyl and 4-tert-benzyl derivatives exhibit better Cs(I) sorption performance in terms of Cs(I) sorption distribution coefficient and Cs(I) selectivity in the simulated HLLW system.","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s10967-024-09738-6","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The removal of radioactive Cs(I) is critical for the management of radioactive liquid waste. In this study, four sorbents impregnated with different 1,3-alternate calix[4]arane-2,4-crown-6 ligands on XAD-7 resin were prepared for Cs(I) selective removal from strongly acidic aqueous solution. The ligands differ in the substituent groups (benzyl, 4-tert-butyl benzyl, isopropyl, and n-octyl) at 1,3-alternate positions of the supramolecular platform of calix[4]arane-2,4-crown-6 ether. The sorption of Cs(I) was investigated as a function of contact time, HNO₃ concentration, ligand concentration and temperature using a batch method. The experimental results indicated that Cs(I) sorption on the sorbents is rapid and reaches sorption steady state in 30 min. All sorbents exhibit excellent Cs(I) sorption selectivity in a simulated high-level liquid waste (HLLW). Cs(I) sorption on the sorbents is an exothermic process. The substituent groups of the ligands affect both the kinetics and the thermodynamics of Cs(I) sorption on the sorbents. The sorbents impregnated with benzyl and 4-tert-benzyl derivatives exhibit better Cs(I) sorption performance in terms of Cs(I) sorption distribution coefficient and Cs(I) selectivity in the simulated HLLW system.

Abstract Image

查看原文本刊更多论文

用 1,3-替代钙[4]烯-2,4-冠-6 浸渍吸附剂去除酸性溶液中的铯

去除放射性铯（I）对于放射性液体废物的管理至关重要。本研究在 XAD-7 树脂上制备了四种浸渍有不同 1,3 邻位钙[4]蒽-2,4-冠-6 配体的吸附剂，用于从强酸性水溶液中选择性地去除铯（I）。这些配体在钙[4]芒-2,4-冠-6 醚超分子平台的 1,3 邻位上的取代基（苄基、4-叔丁基苄基、异丙基和正辛基）不同。采用间歇法研究了铯(I)的吸附量与接触时间、HNO3 浓度、配体浓度和温度的函数关系。实验结果表明，铯（I）在吸附剂上的吸附速度很快，在 30 分钟内就达到了吸附稳态。在模拟高浓度液体废物（HLLW）中，所有吸附剂都表现出优异的铯(I)吸附选择性。铯（I）在吸附剂上的吸附是一个放热过程。配体的取代基团会影响铯（I）在吸附剂上吸附的动力学和热力学。在模拟 HLLW 系统中，浸渍了苄基和 4-叔苄基衍生物的吸附剂在铯(I)吸附分布系数和铯(I)选择性方面表现出更好的铯(I)吸附性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.