All-chromatographic method for the recovery of Americium-241 from solutions of complex composition

This paper reported creating the all-chromatographic technique for the recovery of americium radionuclides from solutions of the complex composition generated in the radiochemical industry. The technique was based entirely on the displacement complexing chromatography; neither additional precipitati...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2020-10, Vol.326 (1), p.627-636
Main Authors: Kharitonov, O. V., Firsova, L. A., Kozlitin, E. A.
Format: Article
Language:English
Subjects:
Additives
Americium
Americium 241
Cadmium
Chemistry
Chemistry and Materials Science
Chromatography
Citric acid
Composition
Diagnostic Radiology
Eluents
Elution
Ethylenediaminetetraacetic acid
Hadrons
Heavy Ions
Inorganic Chemistry
Methods
Nuclear Chemistry
Nuclear energy
Nuclear Physics
Physical Chemistry
Radioactive pollution
Radioactive wastes
Radiochemistry
Radioisotopes
Rare earth elements
Rare earth metals
Recovery
Separation
Technology application
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Summary:This paper reported creating the all-chromatographic technique for the recovery of americium radionuclides from solutions of the complex composition generated in the radiochemical industry. The technique was based entirely on the displacement complexing chromatography; neither additional precipitation nor extraction stages were necessary. The technology used the elution with DTPA and NTA-based solutions containing the citric acid additives and the sequential elution with these eluents, emphasizing the separation of americium from the heavy rare earth elements, lead, and cadmium. The complete separation of americium from lead and cadmium was a peculiar exercise; the elution order of lead and cadmium changed in the presence of the citric acid additives. The recovery and separation of americium from actual radioactive waste solutions of different origins demonstrated 96 and 99% chemical purity of the final product.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-020-07336-w