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Sasaki, Yuji; Kitatsuji, Yoshihiro; Sugo, Yumi; Tsubata, Yasuhiro; Suzuki, Tomoya; Kimura, Takaumi; Morita, Yasuji
Proceedings of 20th International Solvent Extraction Conference (ISEC 2014), p.431 - 435, 2014/09
The eight amide extractants including podand-types, which introduce oxygen, nitrogen and sulfur donor atoms in their central frame, are synthesized and their D values for actinide extraction are compared. The central frame affect greatly on their extractability and it is clear that diglycolamide (DGA) has the highest extractability among extractants used here. In addition, DGA having the different length of alkyl chain or phenyl groups attached to amidic N atoms are obtained and the effect of these substituents is studied. Due to the steric hindrance or hydrogen bond, DGA with long and branched alkyl chains, phenyl group, and proton give relatively low D values.
Uchiyama, Gunzo; Abe, Hitoshi
Proceedings of 20th International Solvent Extraction Conference (ISEC 2014), p.1167 - 1172, 2014/09
A simulation study and an experimental study were conducted for the consideration of a scenario of criticality accident at raffinate solution tanks in separation cycle in reprocessing plants. In a simulation study, transient extraction behavior of Pu has been studied with the solvent extraction simulation code, ESSCAR to understand the effect of process parameters in separation cycle. In the experimental study, extraction behaviors of nitrous acid and dibutyl phosphate (DBP) which influence the extraction behavior of Pu in separation cycles were investigated by using a mixer-settler under a 
-ray irradiation condition. It was found that the concentrations of nitrous acid in both organic and aqueous phases were 1 
10
M and 2 10
M, respectively. The concentrations of DBP in both organic and aqueous phases were 5 10 M and 8 10 M, respectively.
-diketone fragments on the extraction of strontium into an ionic liquidOkamura, Hiroyuki; Naganawa, Hirochika; Imura, Hisanori*; Shimojo, Kojiro
Proceedings of 20th International Solvent Extraction Conference (ISEC 2014), p.1046 - 1051, 2014/09
-dioctyldiglycolamic acid DODGAAShimojo, Kojiro; Naganawa, Hirochika
Proceedings of 20th International Solvent Extraction Conference (ISEC 2014), p.1052 - 1057, 2014/09