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The role of oxidants in Pu-Th separation studies employing di(2-ethylhexyl)isobutyramide (D2EHIBA) as extractant
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P.N. Pathak
Published/Copyright:
September 25, 2009
Summary
Distribution studies of Pu and Th have been carried out under varying acidity/ligand concentrations to optimise the conditions for their separation employing di(2-ethylhexyl)isobutyramide (D2EHIBA) in n-dodecane as extractant. In view of the selective complexation of D2EHIBA towards hexavalent metal ions over tetravalent metal ions, the focus of the present work is to identify a suitable oxidant of Pu. Amongst various oxidising agents investigated for the oxidation of Pu to Pu(VI), AgO appears to be a promising candidate as (i) it is thermodynamically as well as kinetically a favourable oxidant and (ii) unlike Cr(VI) and Ce(IV), it is not co-extracted with Pu towards the organic phase.
Published Online: 2009-9-25
Published in Print: 2003-3-1
© 2003 Oldenbourg Wissenschaftsverlag GmbH
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Articles in the same Issue
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- Thermodynamics of extraction of Am(III) and Eu(III) from different anionic media with Tri-n-octyl phosphine oxide
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- The role of oxidants in Pu-Th separation studies employing di(2-ethylhexyl)isobutyramide (D2EHIBA) as extractant
- Synthesis and properties of neptunium(VI,V) and plutonium(VI) pertechnetates
- Speciation of polonium released from molten lead bismuth
- Extraction separation of No-carrier-added astatine from bismuth target
- Enhanced extraction and separation of trivalent lanthanoids with 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone and dicyclohexano-18-crown-6
- Thermodynamic modeling of metal–ligand interactions in high ionic strength NaCl solutions: the Ni2+-oxalate system
- Influence of surface charge of an Fe-oxide and an organic matter dominated soil on iodide and pertechnetate sorption
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