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Speciation studies of nitric acid and U(VI) third phases in n,n-dialkyl amides/n-dodecane systems
Authors:Shekhar Kumar  U. Kamachi Mudali  R. Natarajan
Affiliation:(1) Reprocessing R&D Division, Reprocessing Group Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India
Abstract:Conventionally composition of the actinide-extractant solvate is assumed to be the same in the unpartitioned organic phase and the formed third phase. For example, if a m:n solvate has formed during extraction, the solvate is expected to be in the same state even during the third phase condition. However contemporary analysis, based on the spectroscopy measurements and empirical observations, has indicated the presence of an extended solvate. In this article, the proposed speciation in nitric acid and U(VI) third phase formation in nn dialkyl amide/dodecane-nitric acid systems has been modeled with empirical correlations.
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