THE MODEL OF DESCRIPTION OF EXTRACTION OF URANIUM-235 AND URANIUM-238 ISOTOPES COMPLEXES IN A SUPERCRITICAL CARBON DIOXIDE LAYER HEATED FROM BELLOW
| Autor: | B.V. Borts, S.F. Skoromnaya, V.I. Tkachenko |
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| Rok vydání: | 2022 |
| Zdroj: | Problems of Atomic Science and Technology. :100-105 |
| DOI: | 10.46813/2022-137-100 |
| Popis: | The models and analytical solutions for description of the extraction of 235U and 238U isotopes complexes in case of availability of water microdrops located both in a uniform temperature field and in a non-uniform temperature field of the heated from bellow horizontal layer of the supercritical carbon dioxide are suggested. It has been indicated that in a uniform temperature field the efficiency of supercritical fluid extraction with carbon dioxide complexes of uranium isotopes reaches a maximum at the limit of water solubility in supercritical carbon dioxide. Theoretical calculations have demonstrated that the maximum concentration of 235U isotope complexes heated from below in a supercritical carbon dioxide layer reaches 1.2% and is observed near the lower layer boundary. The procedure for supercritical fluid extraction with carbon dioxide is described, in which the concentration of 235U isotope complexes in the supercritical fluid will be higher than the natural one. |
| Databáze: | OpenAIRE |
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