Ion Exchange and Solvent Extraction. A Series of Advances by SenGupta A.K., Moyer B.A. (eds.)

By SenGupta A.K., Moyer B.A. (eds.)

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436). The extraction system with CCD has some important drawbacks: (1) it needs polar aromatic or aliphatic nitro-compound diluents, which are environmentally toxic; and (2) it would release chloride ions during reprocessing and cause corrosion of the facility materials. Efforts toward increasing the solubility of CCD in nonpolar solvents have been focused on alkylation of CCD (437, 438). The CCD/PEG process is most effective when the nitric acid concentration in the feed is lower than 1 M. The extracted species of Cs+ and Sr2+ are represented as [Cs+ CCD−]org and [Sr2+(CCD−)2]org, respectively, where cationic and anionic species are free ions in the organic phase.

Activities on R&D of partitioning and transmutation in Japan. 7th Information Exchange Meeting on Actinide and Fission Product Partitioning and Transmutation. 23–35. Jeju, Korea Oct. J. 2007. Lab-scale demonstration of the UREX+1a process using spent fuel. Proceedings of WM’07, Tucson, AZ, February 25 to March 1. Note: S: storage. T: transmute by thermal (therm) or fast (fast) neutrons. F. Ans: fissile actinides. ASTM C788-98: Standard specification for nuclear-grade uranyl nitrate solution or crystals.

F. Ans: fissile actinides. ASTM C788-98: Standard specification for nuclear-grade uranyl nitrate solution or crystals. ASTM C833-01: Standard specification for sintered (uranium-plutonium) dioxide pellets. 1 Molecular Modeling Approach Molecular design has enjoyed a long history, from the preliminary “trial-and-error” stage to the contemporary computer-aided “molecular modeling” stage. In this chapter, the latter, in silico design, for nuclear applications is focused on and reviewed. Design of a novel ligand that shows affinity to specified metals entails a toolbox containing knowledge bases, computer codes, and synthetic methods for organics.

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