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Ban, Yasutoshi; Asakura, Toshihide; Morita, Yasuji
Proceedings of International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL 2005) (CD-ROM), 5 Pages, 2005/10
An idea for controlling Np behavior in the Purex process is that Np(VI) extracted by TBP is selectively reduced to Np(V) by salt-free reagents and separated from U and Pu. Allylhydrazine is expected as a selective Np(VI) reductant from a view point of reduction rates for Np(VI) and Pu(IV). To confirm the applicability of allylhydrazine, a continuous counter-current back-extraction test of Np(VI) has been carried out using a miniature mixer-settler that consists of two steps: U-Pu recovery (3 stages) and Np separation (4 stages). Experimental results show that at least 90% of Np in feed are back-extracted and separated from U and Pu, therefore, it is confirmed that allylhydrazine is expected to be a selective salt-free reductant of Np(VI).
Uchiyama, Gunzo; Mineo, Hideaki; Hotoku, Shinobu; Asakura, Toshihide; Kamei, Kazushige; Watanabe, Makio; Nakano, Yuji*; Kimura, Shigeru; Fujine, Sachio
Progress in Nuclear Energy, 37(1-4), p.151 - 156, 2000/12
Times Cited Count：10 Percentile：57.02(Nuclear Science & Technology)no abstracts in English
Uchiyama, Gunzo; Hotoku, Shinobu; Watanabe, Makio; Kamei, Kazushige; Mineo, Hideaki; Nakano, Yuji*; Kimura, Shigeru; Asakura, Toshihide; Fujine, Sachio
Proceedings of 7th International Conference on Radioactive Waste Management and Environmental Remediation (ICEM '99) (CD-ROM), p.5 - 0, 1999/00
no abstracts in English
Uchiyama, Gunzo; Fujine, Sachio; Maeda, Mitsuru
Nuclear Technology, 120(1), p.41 - 47, 1997/10
Times Cited Count：4 Percentile：37.09(Nuclear Science & Technology)no abstracts in English
Fujine, Sachio
Enerugi Rebyu, 14(2), p.13 - 15, 1994/01
no abstracts in English
Uchiyama, Gunzo; Hotoku, Shinobu; Kihara, Takehiro; Fujine, Sachio; Maeda, Mitsuru
Solvent Extraction 1990, Part A, p.675 - 680, 1992/00
no abstracts in English
Uchiyama, Gunzo; *; Fujine, Sachio; Maeda, Mitsuru
Proc. of Symp. on Solvent Extraction l991, p.243 - 250, 1991/00
no abstracts in English
