Micelle mediated extraction of americium and europium by calix[4]arene phosphine oxides from nitric acid media

152 Eu and 241 Am recovery from HNO 3 by conventional and micelle mediated extraction are studied. It is stated that radionuclides distribution ratios D ( K D ) in micelle mediated extraction are significantly higher than those of conventional extraction, with 241 Am is slightly less extracted than...

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Published in:Journal of radioanalytical and nuclear chemistry 2017, Vol.311 (1), p.599-609
Main Authors: Karavan, Maria D., Smirnov, Igor V., Kleshnina, Sofiya R., Solovieva, Svetlana E., Kadirov, Marsil K., Antipin, Igor S., Safiullin, Roman A., Gorbacheva, Svetlana Yu, Novikov, Alexander P.
Format: Article
Language:English
Subjects:
Americium
Calixarenes
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Europium
Hadrons
Heavy Ions
Inorganic Chemistry
Micelles
Nitric acid
Nuclear Chemistry
Nuclear Physics
Oxides
Phosphine oxide
Photon correlation spectroscopy
Physical Chemistry
Radioisotopes
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Summary:152 Eu and 241 Am recovery from HNO 3 by conventional and micelle mediated extraction are studied. It is stated that radionuclides distribution ratios D ( K D ) in micelle mediated extraction are significantly higher than those of conventional extraction, with 241 Am is slightly less extracted than 152 Eu. Distribution ratios dependence on medium acidity is similar for both processes, with extraction maximum at C (HNO 3 ) = 0.2–1 mol L −1 . Microscopic research and dynamic light scattering prove micellar nature of calixarene solutions. Nano-scale of particles, which accumulate radionuclides, is confirmed by ultramicrofiltration. This method is also applied for studies of radionuclides re-extraction and electrochemical deposition.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-016-5096-7