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- Title
Separation of ReO<sub>4</sub><sup>−</sup>/TcO<sub>4</sub><sup>−</sup> from simulated radioactive waste liquid by a novel series of anion exchange resins.
- Authors
Huang, Yiwei; Chen, Xinlong; Shen, Yinglin; Li, Xiaomin; Zhi, Xupeng; Liu, Peng; Liu, Meiying; Liu, Bin
- 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.
- Subjects
RADIOACTIVE wastes; ION exchange resins; LIQUID waste; FOURIER transform infrared spectroscopy; ENERGY dispersive X-ray spectroscopy; X-ray photoelectron spectroscopy
- Publication
Radiochimica Acta, 2024, Vol 112, Issue 5, p315
- ISSN
0033-8230
- Publication type
Article
- DOI
10.1515/ract-2023-0261