Effect of Al(NO{sub 3}){sub 3} on extraction of Am, Cm, Eu, and Ce(III) by 18-crown-6 and mixtures of 18-crown-6 and chlorinated cobalt dicarbollide in nitrobenzene
Journal Article
·
· Separation Science and Technology
- St. Petersburg Technological Inst. (Russian Federation). Dept. of Radiochemical Processes of Nuclear Energy
- Pacific Northwest National Lab., Richland, WA (United States)
The extraction of Am, Cm, Eu, and Ce(III) tracers from nitric acid in the presence of Al(NO{sub 3}){sub 3} by 18-crown-6 (18C6) or mixtures of 18C6 and chlorinated cobalt dicarbollide (ChCoD) in nitrobenzene solutions was investigated. The partitioning of 18C6 between nitrobenzene and the aqueous phase was also investigated. In the presence of Al(NO{sub 3}){sub 3}, 18C6 is selective for Ce over Am, Cm, and Eu. The extraction of these same metals by ChCoD is suppressed by Al(NO{sub 3}){sub 3}. The extraction of these metals is a complicated function of the 18C6-ChCoD concentration ratio. The probable formation of a 1:1 18C6:ChCoD complex and the effects of ionic strength and pH on the extraction are discussed.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 682266
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 11 Vol. 34; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
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Thu Dec 31 23:00:00 EST 1998
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OSTI ID:15001704
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Mon Nov 30 23:00:00 EST 1998
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OSTI ID:15001333
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Conference
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Mon Aug 01 00:00:00 EDT 1994
·
OSTI ID:10182441