{"title":"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","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":"<p>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 <i>n</i>-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, HNO<sub>3</sub> 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.</p>","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":"{\"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\":\"<p>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 <i>n</i>-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, HNO<sub>3</sub> 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.</p>\",\"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}","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}
Cesium removal from acidic solution by 1,3-alternate calix[4]arene-2,4-crown-6 impregnated sorbents
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.
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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.
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