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Extraction and separation of some naturally occurring radionuclides from rare earth elements by different amines
Joint Authors
al-Sayyid, G. O.
Borai, E. H.
Shahir al-Din, A. M.
al-Sufyani, E. A.
Saqr, A. A.
Source
Arab Journal of Nuclear Sciences and Applications
Issue
Vol. 47, Issue 3 (30 Jun. 2014), pp.48-60, 13 p.
Publisher
The Egyptian Society of Nuclear Science and Applications
Publication Date
2014-06-30
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Uranium (U), thorium (Th) and rare earth elements (REEs) are important elements not only in environmental concern but also in industrial applications.
In this endeavor, new extraction and separation procedure for U and Th from REEs has been developed.
The parameters affecting U and Th extraction using different amines such as contact time, pH of the aqueous phase and metal ion concentration as well as amines concentration in the organic phase were investigated.
Comparison between the results of using three different amines (primary, secondary and tertiary amines) as organic extractants has been reported.
It was observed that the primary amine (Octylamine) is more effective for extraction of U, Th and REEs rather than the other two amines.
On the other hand, the secondary and tertiary amines are more selective for extraction of U and Th rather than REEs.
In a single element system, the extraction of U and Th are preferably with Octylamine.
The results indicated the possibility of extracting 90% of U by 0.1 mol/l Octylamine at pH 4 for 2 hrs at 25 oC, while Th extraction efficiency reached faster to 97% by 0.005 mol/l Octylamine after 15 min., at pH 3 and 25 oC.
In multielements system, the separation of U and Th from REEs was mainly carried out by tertiary amine.
It was found that, 80% of Th could be efficiently separated by 0.01M N,N-dimethyl aniline at pH 4 for 15 min., while 66% of U was then separated by 0.1M N,N-dimethylaniline at pH 7 for 30 min., leaving REEs in the aqueous solution.
American Psychological Association (APA)
Borai, E. H.& Shahir al-Din, A. M.& al-Sufyani, E. A.& Saqr, A. A.& al-Sayyid, G. O.. 2014. Extraction and separation of some naturally occurring radionuclides from rare earth elements by different amines. Arab Journal of Nuclear Sciences and Applications،Vol. 47, no. 3, pp.48-60.
https://search.emarefa.net/detail/BIM-724893
Modern Language Association (MLA)
Borai, E. H.…[et al.]. Extraction and separation of some naturally occurring radionuclides from rare earth elements by different amines. Arab Journal of Nuclear Sciences and Applications Vol. 47, no. 3 (Jun. 2014), pp.48-60.
https://search.emarefa.net/detail/BIM-724893
American Medical Association (AMA)
Borai, E. H.& Shahir al-Din, A. M.& al-Sufyani, E. A.& Saqr, A. A.& al-Sayyid, G. O.. Extraction and separation of some naturally occurring radionuclides from rare earth elements by different amines. Arab Journal of Nuclear Sciences and Applications. 2014. Vol. 47, no. 3, pp.48-60.
https://search.emarefa.net/detail/BIM-724893
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 59-60
Record ID
BIM-724893