埃及磷酸湿法工艺中作为阳离子交换树脂的聚亚甲基琥珀酰胺（PA46）对铀的吸附作用

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR Radiochemistry Pub Date : 2024-10-06 DOI:10.1134/S1066362224040106

W. M. Youssef, A. A. Elzoghby, A. A. Rateb, E. M. Helmy, K. A. Khalil, H. S. Gado

{"title":"埃及磷酸湿法工艺中作为阳离子交换树脂的聚亚甲基琥珀酰胺（PA46）对铀的吸附作用","authors":"W. M. Youssef, A. A. Elzoghby, A. A. Rateb, E. M. Helmy, K. A. Khalil, H. S. Gado","doi":"10.1134/S1066362224040106","DOIUrl":null,"url":null,"abstract":"The study deals with U(VI) sorption from phosphoric acid media onto poly(hexamethylenesuccinamide) (PA46) (–CO(CH2)2)CO–NH(CH2)6NH–)n as a cation-exchange resin. The process was studied using SEM, FT-IR, and surface area determination. The effect exerted on the process by the contact time, liquid to solid ratio, temperature, stirring rate, and initial U(VI) concentration was examined. The adsorption capacity for uranium under the optimum conditions was found to be 25 mg/g. The sorption data were described using Langmuir, Freundlich, and Temkin isotherm models. The thermodynamic equilibrium constant and the Gibbs free energy were determined: ΔG° from ‒19.08 to ‒22.49 kJ/mol, ΔH ‒78.63 kJ/mol, and ΔS ‒199.83 J/(mol K). These data show that the adsorption is spontaneous. The kinetic data are best described by the pseudo-second-order model.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 4","pages":"481 - 492"},"PeriodicalIF":0.9000,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Uranium Sorption by Poly(hexamethylenesuccinamide) (PA46) as Cation-Exchange Resin from Wet-Process Egyptian Phosphoric Acid\",\"authors\":\"W. M. Youssef, A. A. Elzoghby, A. A. Rateb, E. M. Helmy, K. A. Khalil, H. S. Gado\",\"doi\":\"10.1134/S1066362224040106\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The study deals with U(VI) sorption from phosphoric acid media onto poly(hexamethylenesuccinamide) (PA46) (–CO(CH2)2)CO–NH(CH2)6NH–)n as a cation-exchange resin. The process was studied using SEM, FT-IR, and surface area determination. The effect exerted on the process by the contact time, liquid to solid ratio, temperature, stirring rate, and initial U(VI) concentration was examined. The adsorption capacity for uranium under the optimum conditions was found to be 25 mg/g. The sorption data were described using Langmuir, Freundlich, and Temkin isotherm models. The thermodynamic equilibrium constant and the Gibbs free energy were determined: ΔG° from ‒19.08 to ‒22.49 kJ/mol, ΔH ‒78.63 kJ/mol, and ΔS ‒199.83 J/(mol K). These data show that the adsorption is spontaneous. The kinetic data are best described by the pseudo-second-order model.\",\"PeriodicalId\":747,\"journal\":{\"name\":\"Radiochemistry\",\"volume\":\"66 4\",\"pages\":\"481 - 492\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-10-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1066362224040106\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1066362224040106","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}

引用次数: 0

摘要

本研究探讨了磷酸介质中的六（VI）铀在阳离子交换树脂聚（己二胺）（PA46）（-CO(CH2)2)CO-NH(CH2)6NH-）n 上的吸附。利用扫描电镜、傅立叶变换红外光谱和表面积测定法对这一过程进行了研究。研究了接触时间、液固比、温度、搅拌速率和初始铀(VI)浓度对该过程的影响。在最佳条件下，铀的吸附容量为 25 毫克/克。吸附数据采用 Langmuir、Freundlich 和 Temkin 等温线模型进行描述。测定的热力学平衡常数和吉布斯自由能分别为：ΔG° -19.08 至 -22.49 kJ/mol，ΔH -78.63 kJ/mol，ΔS -199.83 J/(mol K)。这些数据表明吸附是自发的。伪二阶模型对动力学数据进行了最佳描述。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

摘要图片

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

Uranium Sorption by Poly(hexamethylenesuccinamide) (PA46) as Cation-Exchange Resin from Wet-Process Egyptian Phosphoric Acid

The study deals with U(VI) sorption from phosphoric acid media onto poly(hexamethylenesuccinamide) (PA46) (–CO(CH₂)₂)CO–NH(CH₂)₆NH–)_n as a cation-exchange resin. The process was studied using SEM, FT-IR, and surface area determination. The effect exerted on the process by the contact time, liquid to solid ratio, temperature, stirring rate, and initial U(VI) concentration was examined. The adsorption capacity for uranium under the optimum conditions was found to be 25 mg/g. The sorption data were described using Langmuir, Freundlich, and Temkin isotherm models. The thermodynamic equilibrium constant and the Gibbs free energy were determined: ΔG° from ‒19.08 to ‒22.49 kJ/mol, ΔH ‒78.63 kJ/mol, and ΔS ‒199.83 J/(mol K). These data show that the adsorption is spontaneous. The kinetic data are best described by the pseudo-second-order model.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.