Mohamed R. Abass, Sara S. Mahrous, Muhammad S. Mansy
{"title":"镍改性膨润土对137Cs和152+154Eu的吸附行为:动力学、等温线和色谱柱应用","authors":"Mohamed R. Abass, Sara S. Mahrous, Muhammad S. Mansy","doi":"10.1515/ract-2023-0168","DOIUrl":null,"url":null,"abstract":"Abstract Using batch and column procedures, the present work investigated the sorption behaviour of 137 Cs and 152+154 Eu by bentonite phosphate modified with nickel (BPN) sorbent. The kinetic data obey pseudo-1 st -order for 137 Cs and follow pseudo-2 nd -order for 152+154 Eu. Various sorption isotherm models were used to analyze equilibrium data. The thermodynamic functions reflect an endothermic and spontaneous sorption process. HCl (about 95.35 %) and CaCl 2 (about 98.13 %) showed the optimum eluents for the complete recovery of both 137 Cs and 152+154 Eu, respectively. Finally, column data show that 137 Cs and 152+154 Eu may be loaded on BNP sorbent and separated from an aqueous solution using a variety of HCl concentrations as eluent. The obtianed results revealed that BNP sorbent is suitable for recovering 137 Cs and 152+154 Eu from low-level radioactive waste effluents (LLW).","PeriodicalId":21167,"journal":{"name":"Radiochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sorption behaviour of <sup>137</sup>Cs and <sup>152+154</sup>Eu onto bentonite phosphate modified with nickel: kinetics, isotherms, and chromatographic column application\",\"authors\":\"Mohamed R. Abass, Sara S. Mahrous, Muhammad S. Mansy\",\"doi\":\"10.1515/ract-2023-0168\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Using batch and column procedures, the present work investigated the sorption behaviour of 137 Cs and 152+154 Eu by bentonite phosphate modified with nickel (BPN) sorbent. The kinetic data obey pseudo-1 st -order for 137 Cs and follow pseudo-2 nd -order for 152+154 Eu. Various sorption isotherm models were used to analyze equilibrium data. The thermodynamic functions reflect an endothermic and spontaneous sorption process. HCl (about 95.35 %) and CaCl 2 (about 98.13 %) showed the optimum eluents for the complete recovery of both 137 Cs and 152+154 Eu, respectively. Finally, column data show that 137 Cs and 152+154 Eu may be loaded on BNP sorbent and separated from an aqueous solution using a variety of HCl concentrations as eluent. The obtianed results revealed that BNP sorbent is suitable for recovering 137 Cs and 152+154 Eu from low-level radioactive waste effluents (LLW).\",\"PeriodicalId\":21167,\"journal\":{\"name\":\"Radiochimica Acta\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2023-11-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochimica Acta\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1515/ract-2023-0168\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochimica Acta","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/ract-2023-0168","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Sorption behaviour of 137Cs and 152+154Eu onto bentonite phosphate modified with nickel: kinetics, isotherms, and chromatographic column application
Abstract Using batch and column procedures, the present work investigated the sorption behaviour of 137 Cs and 152+154 Eu by bentonite phosphate modified with nickel (BPN) sorbent. The kinetic data obey pseudo-1 st -order for 137 Cs and follow pseudo-2 nd -order for 152+154 Eu. Various sorption isotherm models were used to analyze equilibrium data. The thermodynamic functions reflect an endothermic and spontaneous sorption process. HCl (about 95.35 %) and CaCl 2 (about 98.13 %) showed the optimum eluents for the complete recovery of both 137 Cs and 152+154 Eu, respectively. Finally, column data show that 137 Cs and 152+154 Eu may be loaded on BNP sorbent and separated from an aqueous solution using a variety of HCl concentrations as eluent. The obtianed results revealed that BNP sorbent is suitable for recovering 137 Cs and 152+154 Eu from low-level radioactive waste effluents (LLW).