Interaction of thorium and plutonium with pertechnetic acid in the course of extraction from nitric acid solutions with tributyl phosphate in diluent and its mathematical description

E. A. Puzikov; B. Ya. Zilberman; I. V. Blazheva; A. Yu. Vakhrushin; N. D. Goletskii; A. S. Kudinov; D. V. Ryabkov; O. V. Shmidt

doi:10.1134/S1066362216040056

Interaction of thorium and plutonium with pertechnetic acid in the course of extraction from nitric acid solutions with tributyl phosphate in diluent and its mathematical description

Authors: Puzikov E.A.¹, Zilberman B.Y.¹, Blazheva I.V.¹, Vakhrushin A.Y.², Goletskii N.D.¹, Kudinov A.S.¹, Ryabkov D.V.¹, Shmidt O.V.³
Affiliations:
1. Khlopin Radium Institute
2. Research Institute of Atomic Reactors
3. Bochvar High-Tech Institute of Inorganic Materials
Issue: Vol 58, No 4 (2016)
Pages: 374-380
Section: Article
URL: https://ogarev-online.ru/1066-3622/article/view/223417
DOI: https://doi.org/10.1134/S1066362216040056
ID: 223417

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Abstract
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Abstract

Databases on the coextraction of Th or Pu with Tc into 30% TBP in hydrocarbon diluent at 25°С are presented. The coextraction leads to mutual enhancement of the extraction of all the elements. The interactions in the system are described within the framework of a new approach to modeling, using the previously suggested and additional equations of concurrently occurring chemical reactions. The apparent equilibrium constants of these reactions are calculated.

Keywords

thorium, plutonium, technetium, extraction, mathematical modeling

About the authors

E. A. Puzikov

Khlopin Radium Institute

Author for correspondence.
Email: egor_puzikov@mail.ru
Russian Federation, 2-i Murinskii pr. 28, St. Petersburg, 194021