Cs extraction from chloride media by calixarene crown-ethers
Asse II salt mine, in Germany, contains low and intermediate-level radioactive waste that must be retrieved in the upcoming years. Potentially contaminated salts and brines will require treatment, with 137Cs being the main contaminant. Cs+ is problematic to selectively recover due to its chemical si...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
19 October 2022
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| In: |
Energies
Year: 2022, Volume: 15, Issue: 20, Pages: 1-10 |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en15207724 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/en15207724 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/1996-1073/15/20/7724 
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| Author Notes: | Marie Simonnet, Thomas Sittel, Patrik Weßling and Andreas Geist |
| Summary: | Asse II salt mine, in Germany, contains low and intermediate-level radioactive waste that must be retrieved in the upcoming years. Potentially contaminated salts and brines will require treatment, with 137Cs being the main contaminant. Cs+ is problematic to selectively recover due to its chemical similarity with Na+ and K+ which are present in high quantities in a salt mine. This paper offers a novel solution for Cs+ separation from concentrated chloride salt media by solvent extraction with calixarene-crown-ether extractants in an alcoholic diluent. The proposed solvent extracts Cs+ at elevated chloride concentrations (3-4 M) while back-extraction is achieved by contacting the solvent with dilute (0.01 M) hydrochloric acid. |
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| Item Description: | Gesehen am 13.01.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en15207724 |