Solvent extraction of selenium in nitric acid: evaluation of multiple extractants and proposal of a novel separation process

Solvent extraction of selenium in nitric acid: evaluation of multiple extractants and proposal of a novel separation process

Solvent extraction behaviors of Se (VI) from nitric acid solutions were investigated with multiple extractants used for uranium, plutonium, minor actinides, and rare earth elements separation processes from high-level liquid waste. During the processes, Se remained in the residual aqueous solutions,...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2024-10, Vol.333 (10), p.5183-5189
Hauptverfasser: Ito, K. T. M., Kawakami, T., Kato, C., Fukutani, S., Matsumura, T., Fujii, T.
Format: Artikel
Sprache:eng
Schlagworte:
Actinides
Aqueous solutions
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Liquid wastes
Nitric acid
Nuclear Chemistry
Nuclear Physics
Octanol
Phenylenediamine
Physical Chemistry
Plutonium
Rare earth elements
Selenium
Separation
Solvent extraction
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Zusammenfassung:Solvent extraction behaviors of Se (VI) from nitric acid solutions were investigated with multiple extractants used for uranium, plutonium, minor actinides, and rare earth elements separation processes from high-level liquid waste. During the processes, Se remained in the residual aqueous solutions, as all extractants showed distribution ratios  1 with o -phenylenediamine in dilute nitric acid (
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-024-09681-6