{"title":"金属氧化物改性El Zafarana硅砂对U（VI）和Th（IV）吸附行为的研究","authors":"O. A. Elhefnawy, A. A. Elabd","doi":"10.3103/S1063455X23050053","DOIUrl":null,"url":null,"abstract":"<p>El-Zafarana silica sand (ZSS) was modified with ZnO and CuO forming the new adsorbent ZnO−CuO/ZSS for removing U(VI) and Th(VI) from aqueous solutions. The removal process was performed in a series of batch experiments. The prepared adsorbent was characterized using different analysis techniques: scanning electron microscopy/energy-dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), and Fourier-transforms infrared spectroscopy (FTIR). The influence of various parameters: pH, contact time, initial concentration, and temperature, on the adsorption process was studied. Kinetics and isothermal data reveal the chemisorption and the homogenous adsorption process with maximum adsorption capacities of 73.31 and 64.93 mg/g for at pH 6 and 5 for U(VI) and Th(IV), respectively. The thermodynamic parameters (Δ<i>H</i>°, Δ<i>S</i>°, Δ<i>G</i>°) confirm the endothermic nature of the adsorption process. The desorption study was carried out and found that ZnO–CuO/ZSS can effectively recover U(VI) and Th(IV) by 0.01 M HNO<sub>3</sub>. The results indicate that ZnO–CuO/ZSS is an efficient adsorbent for U(VI) and Th(IV) from aqueous solutions.</p>","PeriodicalId":680,"journal":{"name":"Journal of Water Chemistry and Technology","volume":"45 5","pages":"419 - 428"},"PeriodicalIF":0.5000,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of U(VI) and Th(IV) Adsorption Behavior onto El-Zafarana Silica Sand Modified with Metal Oxides\",\"authors\":\"O. A. Elhefnawy, A. A. Elabd\",\"doi\":\"10.3103/S1063455X23050053\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>El-Zafarana silica sand (ZSS) was modified with ZnO and CuO forming the new adsorbent ZnO−CuO/ZSS for removing U(VI) and Th(VI) from aqueous solutions. The removal process was performed in a series of batch experiments. The prepared adsorbent was characterized using different analysis techniques: scanning electron microscopy/energy-dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), and Fourier-transforms infrared spectroscopy (FTIR). The influence of various parameters: pH, contact time, initial concentration, and temperature, on the adsorption process was studied. Kinetics and isothermal data reveal the chemisorption and the homogenous adsorption process with maximum adsorption capacities of 73.31 and 64.93 mg/g for at pH 6 and 5 for U(VI) and Th(IV), respectively. The thermodynamic parameters (Δ<i>H</i>°, Δ<i>S</i>°, Δ<i>G</i>°) confirm the endothermic nature of the adsorption process. The desorption study was carried out and found that ZnO–CuO/ZSS can effectively recover U(VI) and Th(IV) by 0.01 M HNO<sub>3</sub>. The results indicate that ZnO–CuO/ZSS is an efficient adsorbent for U(VI) and Th(IV) from aqueous solutions.</p>\",\"PeriodicalId\":680,\"journal\":{\"name\":\"Journal of Water Chemistry and Technology\",\"volume\":\"45 5\",\"pages\":\"419 - 428\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2023-09-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Water Chemistry and Technology\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1063455X23050053\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Water Chemistry and Technology","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.3103/S1063455X23050053","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Investigation of U(VI) and Th(IV) Adsorption Behavior onto El-Zafarana Silica Sand Modified with Metal Oxides
El-Zafarana silica sand (ZSS) was modified with ZnO and CuO forming the new adsorbent ZnO−CuO/ZSS for removing U(VI) and Th(VI) from aqueous solutions. The removal process was performed in a series of batch experiments. The prepared adsorbent was characterized using different analysis techniques: scanning electron microscopy/energy-dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), and Fourier-transforms infrared spectroscopy (FTIR). The influence of various parameters: pH, contact time, initial concentration, and temperature, on the adsorption process was studied. Kinetics and isothermal data reveal the chemisorption and the homogenous adsorption process with maximum adsorption capacities of 73.31 and 64.93 mg/g for at pH 6 and 5 for U(VI) and Th(IV), respectively. The thermodynamic parameters (ΔH°, ΔS°, ΔG°) confirm the endothermic nature of the adsorption process. The desorption study was carried out and found that ZnO–CuO/ZSS can effectively recover U(VI) and Th(IV) by 0.01 M HNO3. The results indicate that ZnO–CuO/ZSS is an efficient adsorbent for U(VI) and Th(IV) from aqueous solutions.
期刊介绍：
Journal of Water Chemistry and Technology focuses on water and wastewater treatment, water pollution monitoring, water purification, and similar topics. The journal publishes original scientific theoretical and experimental articles in the following sections: new developments in the science of water; theoretical principles of water treatment and technology; physical chemistry of water treatment processes; analytical water chemistry; analysis of natural and waste waters; water treatment technology and demineralization of water; biological methods of water treatment; and also solicited critical reviews summarizing the latest findings. The journal welcomes manuscripts from all countries in the English or Ukrainian language. All manuscripts are peer-reviewed.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
