Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Danko Bożena; Dybczyński Rajmund S.; Samczyński Zbigniew; Gajda Dorota; Herdzik-Koniecko Irena; Zakrzewska-Kołtuniewicz Grażyna; Chajduk Ewelina; Kulisa Krzysztof

doi:10.1515/nuka-2017-0031

Nukleonika (Sep 2017)

Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Danko Bożena,
Dybczyński Rajmund S.,
Samczyński Zbigniew,
Gajda Dorota,
Herdzik-Koniecko Irena,
Zakrzewska-Kołtuniewicz Grażyna,
Chajduk Ewelina,
Kulisa Krzysztof

Affiliations

Danko Bożena: Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Dybczyński Rajmund S.: Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Samczyński Zbigniew: Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Gajda Dorota: Centre for Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Herdzik-Koniecko Irena: Centre for Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Zakrzewska-Kołtuniewicz Grażyna: Centre for Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Chajduk Ewelina: Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Kulisa Krzysztof: Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland

DOI: https://doi.org/10.1515/nuka-2017-0031
Journal volume & issue: Vol. 62, no. 3
pp. 213 – 221

Abstract

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The article describes studies on the separation of uranium from acid pregnant leach solutions obtained from Polish uranium ores: dictyonema shales and sandstone rocks. Ion exchange chromatography was applied for uranium sorption, using commercially available, strongly basic anion exchanger, Dowex 1. In model experiments, the influence of degree of crosslinking of Dowex 1 on the efficiency of uranium extraction was investigated. The effect of H2SO4 concentration on the breakthrough curve of uranyl ions for the Dowex 1 resins, of different crosslinking: X4, X8 and X10, was examined. Unexpectedly high increase of exchange capacity of uranium was observed in case of Dowex 1X10. This gives potential opportunity of improving the effectiveness of uranium recovery process. Applying column packed with Dowex 1X10, ‘yellow cake’ with ca. 92% yield and high purity of recovered uranium was obtained. A block diagram of the procedure for uranium and lanthanides extraction from acidic leach liquor has been proposed.

Published in Nukleonika

ISSN: 0029-5922 (Print); 1508-5791 (Online)
Publisher: Sciendo
Country of publisher: Poland
LCC subjects: Science
Website: https://sciendo.com/journal/NUKA

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