Investigation into highly selective uranium adsorption using a water-stable chitosan/ellagic acid/Cu-metal–organic framework material

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-03-04 DOI:10.1016/j.desal.2025.118768

Qi Xin , Hongqiang Wang , Eming Hu , Kaiwen Luo , Zhiwu Lei , Fang Hu , Xueping Liu , Jinming Hu , Qingliang Wang

{"title":"Investigation into highly selective uranium adsorption using a water-stable chitosan/ellagic acid/Cu-metal–organic framework material","authors":"Qi Xin , Hongqiang Wang , Eming Hu , Kaiwen Luo , Zhiwu Lei , Fang Hu , Xueping Liu , Jinming Hu , Qingliang Wang","doi":"10.1016/j.desal.2025.118768","DOIUrl":null,"url":null,"abstract":"<div><div>To mitigate the shortage of land uranium (U) resources and environmental pollution caused by uranium mining and smelting, a chitosan/ellagic acid/Cu-metal–organic framework (MOF) material (CEM) was synthesized for U extraction from seawater. CEM, a phenolic salt ligand MOF material, exhibited superior adsorption selectivity for uranium compared to an ellagic acid/Cu-MOF material (EM) according to the experimental results. The K<sub>d</sub> (distribution coefficient) of CEM for uranium was 16.4 times higher than that of EM, and its stability in water significantly exceeded that of EM. At 308 K, the U adsorption capacity of CEM reached 796 mg/g, maintaining a high rate above 93% even after 7 adsorption–desorption cycles. The uranium adsorption of CEM involves a spontaneous endothermic reaction with amino, hydroxyl, and carboxyl groups on the surface. In conclusion, CEM exhibits promising potential as an effective method for extracting U from seawater.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"606 ","pages":"Article 118768"},"PeriodicalIF":8.3000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Desalination","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0011916425002437","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

To mitigate the shortage of land uranium (U) resources and environmental pollution caused by uranium mining and smelting, a chitosan/ellagic acid/Cu-metal–organic framework (MOF) material (CEM) was synthesized for U extraction from seawater. CEM, a phenolic salt ligand MOF material, exhibited superior adsorption selectivity for uranium compared to an ellagic acid/Cu-MOF material (EM) according to the experimental results. The K_d (distribution coefficient) of CEM for uranium was 16.4 times higher than that of EM, and its stability in water significantly exceeded that of EM. At 308 K, the U adsorption capacity of CEM reached 796 mg/g, maintaining a high rate above 93% even after 7 adsorption–desorption cycles. The uranium adsorption of CEM involves a spontaneous endothermic reaction with amino, hydroxyl, and carboxyl groups on the surface. In conclusion, CEM exhibits promising potential as an effective method for extracting U from seawater.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.