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Study on separation of ReO4, a substitute for TcO4, using functional ionic liquid impregnated extraction chromatography resins

  • Meiying Liu , Xupeng Zhi , Peng Liu , Xiaomin Li , Xinlong Chen , Bin Liu EMAIL logo and Yinglin Shen ORCID logo EMAIL logo
Published/Copyright: September 13, 2024

Abstract

99Tc has a long half-life, high fission yield, and good environmental mobility, posing a significant threat to the environment and human health. Therefore, removing technetium from radioactive wastewater is a very important and urgent task. For laboratory safety reasons, ReO4 is often used as a non-isotopic substitute for 99TcO4. From this point of view, the study of the separation behavior of Re in the aqueous phase can provide a reference value for the removal of 99Tc. Here, a new type of extraction chromatography resin was prepared by impregnating the functionalized ionic liquid into the macroporous resin, whose imidazolium cations modified by amide functional groups which can effectively capture ReO4/TcO4 from simulated radioactive wastewater. The results show the resin has good adsorption performance and fast adsorption kinetics (the adsorption equilibrium is about 20 min). The adsorption mechanism was investigated using Fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS). It shows that the adsorption process is an anion exchange between Cl in the resin and ReO4 in the solution.


Corresponding authors: Bin Liu, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; and School of Stomatology, Lanzhou University, Lanzhou 730000, China, E-mail: ; and Yinglin Shen, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China, E-mail:

Award Identifier / Grant number: Unassigned

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: This work was supported by the National Natural Science Foundation of China (21976075).

  5. Data availability: The raw data can be obtained on request from the corresponding author.

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Supplementary Material

This article contains supplementary material (https://doi.org/10.1515/ract-2024-0290).


Received: 2024-03-05
Accepted: 2024-07-16
Published Online: 2024-09-13
Published in Print: 2024-12-17

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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