Yiwei Huang, Xinlong Chen, Yinglin Shen, Xiaomin Li, Xupeng Zhi, Peng Liu, Meiying Liu, Bin Liu
{"title":"Separation of ReO4 −/TcO4 − from simulated radioactive waste liquid by a novel series of anion exchange resins","authors":"Yiwei Huang, Xinlong Chen, Yinglin Shen, Xiaomin Li, Xupeng Zhi, Peng Liu, Meiying Liu, Bin Liu","doi":"10.1515/ract-2023-0261","DOIUrl":null,"url":null,"abstract":"Selective removal of <jats:sup>99</jats:sup>TcO₄<jats:sup>−</jats:sup> from radioactive wastewater is a challenging but significant task, which benefits spent fuel reprocessing and radioactive-waste leakage treatment. This work introduces the performance of adsorption ReO<jats:sub>4</jats:sub> <jats:sup>−</jats:sup> using a series of novel anion exchange resins, namely MAPE-1, MAPE-2, MAPE-3, and MAGD-1, impregnated with functionalized ionic liquids as active sites. They exhibit a high selectivity towards TcO₄<jats:sup>−</jats:sup>/ReO₄<jats:sup>−</jats:sup>, in a wide pH range of pH 5–11 for ReO₄<jats:sup>−</jats:sup>/TcO₄<jats:sup>−</jats:sup> adsorption. Among these resins, MAPE-1 has the best adsorption performance for ReO<jats:sub>4</jats:sub> <jats:sup>−</jats:sup>, with a maximum adsorption capacity of 202.4 mg/g and a high distribution ratio <jats:italic>K</jats:italic> <jats:sub> <jats:italic>d</jats:italic> </jats:sub> of 6.2 × 10⁶ mL/g at pH 7. The adsorption mechanism involves anion exchange between functionalized ionic liquids and TcO₄<jats:sup>−</jats:sup>/ReO₄<jats:sup>−</jats:sup>, which is supported by X-ray energy dispersive spectroscopy (EDS) and Fourier Transform Infrared spectroscopy (FT-IR) analyses. In addition, X-ray photoelectron spectroscopy (XPS) further illustrates the interaction between the resin and perrhenate.","PeriodicalId":21167,"journal":{"name":"Radiochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochimica Acta","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1515/ract-2023-0261","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Selective removal of 99TcO₄− from radioactive wastewater is a challenging but significant task, which benefits spent fuel reprocessing and radioactive-waste leakage treatment. This work introduces the performance of adsorption ReO4− using a series of novel anion exchange resins, namely MAPE-1, MAPE-2, MAPE-3, and MAGD-1, impregnated with functionalized ionic liquids as active sites. They exhibit a high selectivity towards TcO₄−/ReO₄−, in a wide pH range of pH 5–11 for ReO₄−/TcO₄− adsorption. Among these resins, MAPE-1 has the best adsorption performance for ReO4−, with a maximum adsorption capacity of 202.4 mg/g and a high distribution ratio Kd of 6.2 × 10⁶ mL/g at pH 7. The adsorption mechanism involves anion exchange between functionalized ionic liquids and TcO₄−/ReO₄−, which is supported by X-ray energy dispersive spectroscopy (EDS) and Fourier Transform Infrared spectroscopy (FT-IR) analyses. In addition, X-ray photoelectron spectroscopy (XPS) further illustrates the interaction between the resin and perrhenate.