Extraction of Eu-152, Nd and Am-241 from the Simulated Liquid Wastes by Picolinamide(C 8 H 17 )

Trivalent actinide-lanthanide group separation is difficult to perform on an industrial scale, because of the many drawbacks of the available chemical process. In this paper, picolinamide(CH) is synthesized and characterized, and extraction yields of Am-241, Eu-152 and Nd are determined in batch extraction experiments. In particular, the influence of the solvent is described. The extraction yields of Am-241, Eu-152 and Nd depended on the LiNO concentration, the picolinamide(CH) concentration and the acidity. A favorable picolinamide(CH) concentration was found to be about 2M. The appropriate nitric acid concentration and LiNO concentration were confirmed to be about 0.125M and 3M, respectively. The separation factor of Am and Eu was about 9.9 at optimum conditions. The picolinamide(CH) is a very promising extractant for the actinide(III)-lanthanides(III) separation.aration.aration.