Synthesis of amide imidazole-based functionalized ionic liquid for separation of Th/Pu
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Peng Liu
und
Yinglin Shen
Abstract
The plutonium in the highly radioactive waste liquid has a long half-life and this persistent radioactivity poses a great challenge to the long-term geological disposal of nuclear waste, making it necessary to separate it from other elements. Herein, three amide functionalized imidazolium ionic liquids (DXZ-1, DXZ-2 and MIMDIDOA) were synthesized for separation of Pu(IV) (Th(IV) used as a surrogate for plutonium) from a high-concentration nitric acid solution. The findings revealed that under the condition of 8 mol/L nitric acid, the kerosene solution with 0.1 mol/L MIMDIDOA has the highest extraction efficiency for Th(IV), with SFTh/U of 5.85, while the extraction of lanthanides (lanthanum and europium) can be ignored. The extraction mechanism was elucidated through Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The extraction process is an anion exchange process between chloride ions and thorium complex anions in solution assisted by N-containing functional groups in ionic liquids. The adsorption recovery rate of Th4+/242Pu4+ by the extraction-elution resin impregnated using MIMDIDOA can reach 81 % under experimental conditions.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: All authors state no conflict of interest.
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Research funding: The financial support from the National Natural Science Foundation of China (grant nos. 21976075).
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Data availability: Not applicable.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/ract-2024-0336).
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Artikel in diesem Heft
- Frontmatter
- Original Papers
- Synthesis of amide imidazole-based functionalized ionic liquid for separation of Th/Pu
- Measurement of integral cross sections of some neutron induced reactions on rubidium at a TRIGA reactor: comparison with integrated data from evaluated data libraries
- Production and purification of research scale 161Tb using cation-exchange semi-preparative HPLC for radiopharmaceutical applications
- The enhancement of mtrABDEF gene expressions in Shewanella azerbaijanica, through acclimation in high uranium concentrations
- Temporal variation of radon in soil and water in Kosovo
- Investigation of some radiation interaction parameters with aluminum–boron alloys
- Radiation shielding performance of lead-borate glasses with rare-earth oxides: a comparative analysis
Artikel in diesem Heft
- Frontmatter
- Original Papers
- Synthesis of amide imidazole-based functionalized ionic liquid for separation of Th/Pu
- Measurement of integral cross sections of some neutron induced reactions on rubidium at a TRIGA reactor: comparison with integrated data from evaluated data libraries
- Production and purification of research scale 161Tb using cation-exchange semi-preparative HPLC for radiopharmaceutical applications
- The enhancement of mtrABDEF gene expressions in Shewanella azerbaijanica, through acclimation in high uranium concentrations
- Temporal variation of radon in soil and water in Kosovo
- Investigation of some radiation interaction parameters with aluminum–boron alloys
- Radiation shielding performance of lead-borate glasses with rare-earth oxides: a comparative analysis
