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Ü. Hiçsönmez, M. Eral

Use of extraction chromatography for thorium purification from Eskisehir-Beylikahir Thorium-REEs ore deposit

The extraction chromatography method was used to separate thorium from acidic leach solution. The separation of thorium was realized on silica gel column coated with tri-octlyphosphine oxide (TOPO). The extraction yield of thorium on this column from nitric acid leach solution is 91.9%. Then thorium was eluted by using 0.5 M H₂SO₄ solution, and elution yield was determined as 96.5%. The chemical analysis of H₂SO₄ fractions indicated that thorium was concentrated and purified succesfully by this method. As a result, thorium was recovered in dilute leach solution with a yield of 81.0±6.8%.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 89, 11/2001
Pages: 805

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