C. Brahmmananda Rao, T. Srinivasan, P. Vasudeva Rao
Feb 26, 2010
Citations
0
Influential Citations
11
Citations
Journal
Solvent Extraction and Ion Exchange
Abstract
Abstract Dibutylbutyl phosphonate (DBBP) was synthesized by the Michaelis Becker reaction, and was characterized by elemental analysis, IR, and 31P NMR. The extraction of U(VI), Th(IV), Pu(IV), Fe(III), and Am(III) by 1.1 M DBBP in n-dodecane as a function of nitric acid concentration was studied, and the results are compared with the extraction behavior of these ions with tributyl phosphate (TBP) and diamylamyl phosphonate (DAAP) in n-dodecane. The physical properties of the extractant such as the density, surface tension, viscosity, aqueous solubility, and phase-disengagement time with 1.1 M DBBP/n-dodecane have been measured and compared with those of 1.1 M TBP/n-dodecane and 1.1 M DAAP/n-dodecane. Studies on the third-phase formation behavior of 1.1 M DBBP/n-dodecane with U(VI) and Th(IV) nitrates in nitric acid medium have been carried out, and the results are compared with the TBP and DAAP systems. Studies were also carried out to study the U-Fe separation by DBBP impregnated on XAD-4 resin.