Modeling of simultaneous extraction of uranyl nitrate and nitric acid by 36 vol.% tri-iso-amyl phosphate in n-dodecane

The simultaneous extraction of uranyl nitrate and nitric acid by 36 vol.% tri-iso-amyl phosphate (TiAP) in n-dodecane was experimentally studied and modeled. The batch extraction experiments were carried out at low concentration region of aqueous uranyl nitrate by 36 vol.% TiAP in n-dodecane at 25 °...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2017-11, Vol.314 (2), p.975-983
Main Authors: Balasubramonian, S., Sinha, Pranay Kumar, Sivakumar, D., Mishra, Alok Kumar, Sampath, M., Pandey, N. K., Kumar, Shekhar
Format: Article
Language:English
Subjects:
Analysis
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Dodecane
Hadrons
Heavy Ions
Inorganic Chemistry
Nitrates
Nitric acid
Nuclear Chemistry
Nuclear energy
Nuclear industry
Nuclear Physics
Phosphates
Physical Chemistry
Spent reactor fuels
Uranium
Uranium compounds
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Summary:The simultaneous extraction of uranyl nitrate and nitric acid by 36 vol.% tri-iso-amyl phosphate (TiAP) in n-dodecane was experimentally studied and modeled. The batch extraction experiments were carried out at low concentration region of aqueous uranyl nitrate by 36 vol.% TiAP in n-dodecane at 25 °C. The non idealities in aqueous phase were described by eNRTL model. The predicted organic phase concentration of nitric acid and uranyl nitrate obtained by considering the HNO 3 ·TiAP and UO 2 (NO 3 ) 2 ·2TiAP species in the organic phase is in good agreement with the experimental data.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-017-5474-9