Solvent extraction of U(VI) and Th(IV) ions with N,N,N',N'-tetrabutylsuccinylamide from nitric acid solutions

Wang You-Shao，

Bao Bo-Rong，

Xie De-Feng，

Sun Si-Xiu，

Cao Wei-Guo

Nuclear Science and Techniques

Vol.7, No.4

pp.209-211

Published in print 01 Nov 1996

26600

The solvent extraction of U(VI) and Th(IV) from nitric acid medium by N,N,N',N'-tetrabutylsuccinylamide(TBSA) in a diluent composed of 0.5 volume fraction trimethyl benzene(TMB) and 0.5 volume fraction kerosene(OK) has been studied. The distribution ratios of U(VI) and Th(IV) as a function of aqueous HNO₃ concentration, extractant concentration and temperature have been measured. From the data, the composition of extracted species, equilibrium constants and enthalpies of extraction reaction are also calculated.

N,N,N',N'-tetrabutylsuccinylamideUraniumThoriumSolvent extraction

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