Speaker
Mr
Petr Distler
(CTU in Prague)
Description
Different extraction systems for the separation of trivalent minor actinoids over lanthanoids were studied during last years. The CyMe4-BTBP and its derivatives have been demonstrated to be prospective extractants for the solvent extraction of minor actinoids over lanthanoids from high-level liquid waste issuing the reprocessing of irradiated nuclear fuel (the r-SANEX process).
The presentation will be focused on different effects of 1,2,4-triazine extracting compounds and diluents on extraction systems properties. The results of testing the CyMe4-BTBP ligand and its new derivatives (such as Cy5-S-Me4-BBP, Cy5-O-Me4-BTBP, MeCyMe4-BTBP or t-BuCyMe4-BTBP) for the separation of Americium(III) over Europium(III) from HNO3 solutions and influence of the used diluents (both polar and non-polar) will be discussed. Moreover, complexing properties of several novel hydrophilic ligands, such as (PhSO3Na)2-BTBP, (CH2NMe3)2-BTBP or (PhSO3Na)2-BTPhen will be described as prospective agents for i-SANEX process.
In addition to the dependences of Americium(III) and Europium(III) distribution ratio values and their mutual separation factor values on HNO3 concentrations, the results of the thermodynamic and kinetic studies will be presented.
Primary author
Mr
Petr Distler
(CTU in Prague)
Co-author
Prof.
John Jan
(CTU in Prague)
