Feasibility of using the mixture of two symmetrical diglycolamides instead of unsymmetrical diglycolamide solvent for the separation of trivalent actinides

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 332; no. 8; pp. 3161 - 3171
• Main Authors: Ravi, Jammu, Parvathy, N., Desigan, N., Ananthasivan, K.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.08.2023; Springer; Springer Nature B.V
• Subjects: Actinides; Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Dodecane; Ethylenediaminetetraacetic acid; Feasibility; Fission products; Hadrons; Heavy Ions; Inorganic Chemistry; Mixtures; Nitric acid; Nuclear Chemistry; Nuclear energy; Nuclear industry; Nuclear Physics; Phenolphthalein; Physical Chemistry; Reactor fuel reprocessing; Solvents; Spent reactor fuels; Aggregation; Minor actinide; Extraction; Dynamic light scattering; Diglycolamide; Third phase formation
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-023-09029-6

A mixture of 0.05 M N,N,N’,N’ -tetraoctyl diglycolamide (TODGA) + 0.05 M N,N,N’,N’ -tetra-2-ethylhexyl diglycolamide (TEHDGA)/ n -dodecane was evaluated for its resemblance with its corresponding unsymmetrical diglycolamide (UDGA), N,N -di-2-ethylhexyl- N’,N’ -dioctyl diglycolamide was evaluated by studying their affinity towards the extraction of trivalent f-ions (Am(III), Eu(III)), divalent fission products (Sr(II) and Ba(II)), third phase formation tendency during the extraction of nitric acid and Nd(III) from nitric acid medium and aggregate formation behavior in order to verify the feasibility of using the solvent mixture in place of UDGA to achieve the combined properties of symmetrical diglycolamides, TODGA and TEHDGA.