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Homma, Shunji*; Ishii, Junichi; Kikuchi, Toshiaki*; Chikazawa, Takahiro*; Shibata, Atsuhiro; Koyama, Tomozo; Koga, Jiro*; Matsumoto, Shiro*
Journal of Nuclear Science and Technology, 45(6), p.510 - 517, 2008/06
Times Cited Count：11 Percentile：59.16(Nuclear Science & Technology)U-Pu co-crystallization reprocessing system is proposed for LWR fuels and its flowsheet study is carried out. This reprocessing system is based on the experimental evidence indicating that hexavalent plutonium is co-crystallized with uranyl nitrate. The system consists of five steps: dissolution of spent fuel, Pu oxidation, U-Pu co-crystallization, dissolution of the crystals, and U crystallization. The system does not require organic solvent, expecting the enhancement of safety and cost-effectiveness. The system requires a recycling of the mother liquor from the U-Pu co-crystallization step to recover almost entire amount of U and Pu. The appropriate recycle ratio is determined for LWR fuels, such that the satisfactory decontamination is achieved. The mother liquor from the U re-crystallization step contains U and Pu. The flowsheet study shows that the constant ratio of Pu to U in the mother liquor can be controlled even though the composition of the spent fuel is different.
Ozawa, Masaki; Uchiyama, Gunzo; Matsumoto, Shiro*
Nihon Genshiryoku Gakkai-Shi, 46(2), p.144 - 146, 2004/02
None
Uchida, Shigeo*; Amano, Hikaru; Takahashi, Tomoyuki*; Chiba, Masaru*; Hisamatsu, Shunichi*; Enomoto, Shuichi*; Matsumoto, Shiro*
JAERI-Conf 2003-010, p.25 - 31, 2003/09
In the 3rd Stage Crossover Research (1998 to 2003), a project on Development of a dynamic transfer model of radionuclides in the soil ecosphere,is currently being promoted. The following five researches are carried out in this project. 1) Research into the forms of existence of nuclides and their change in the soil (NIRS and JAERI), 2) Research into the transition behavior of radionuclides in plants (IES, RIKEN and NIRS), 3) Research into the relation to the microorganism and on environmental remediation (RIKEN, JAERI and NIRS), 4) Research on the migration of radionuclides from atmosphere to soil and plant (MRI and JAERI), and 5) Database construction on transfer parameters (JAERI, NIRS and MRI). JAERI, MRI and NIRS are working on the development of a dynamic transfer model such as MOGRA for radionuclides on the basis of a gained knowledge about the environmental behavior through cooperation with universities, etc. This model is also capable of the predicting the behavior of materials that are harmful to the environment such as hazardous heavy metals discharged in the soil ecosphere. In this presentation, we will overview the ourcome of the 3rd stage research.
Matsumoto, Shiro*; Uchiyama, Gunzo; Ozawa, Masaki*; Kobayashi, Y.*; Shirato, K.*
Radiochemistry, 45(3), p.219 - 224, 2003/05
no abstracts in English
Matsumoto, Shiro*; Uchida, Shigeo*; Yamazawa, Hiromi; Amano, Hikaru
JAERI-Conf 99-001, 269 Pages, 1999/03
no abstracts in English
Matsumoto, Shiro*
JNC TJ1400 99-005, 51 Pages, 1999/02
None
Matsumoto, Shiro*; Tajima, Yasunori*; Koga, Jiro*; Miyahara, Yukari*
PNC TJ1609 98-001, 26 Pages, 1998/02
no abstracts in English
Homma, Shunji*; Tajima, Yasunori*; Koga, Jiro*; Matsumoto, Shiro*
PNC TJ1609 97-001, 47 Pages, 1997/02
no abstracts in English
Loaded in Porous Material on Adsorption of CHITakeshita, Kenji*; Takashima, Yoichi*; Matsumoto, Shiro*; Inami, Shinichi
Journal of Nuclear Science and Technology, 32(9), p.941 - 943, 1995/00
None
Inami, Shinichi; ; ; *; Matsumoto, Shiro*
Proceedings of 4th International Conference on Nuclear Fuel Reprocessing and Waste Management (RECOD '94), 0 Pages, 1994/00
None
; ; ;
JAERI-M 84-102, 54 Pages, 1984/06
no abstracts in English
Kobayashi, Hidehiko*; Matsumoto, Shiro*; Mukai. Masao*
PNC TJ168 81-03, 105 Pages, 1981/02
no abstracts in English
Kato, Junya; Miyauchi, Atsushi; Aoshima, Atsushi; Shiotsuki, Masao; Yamashita, Teruo; Nakajima, Masayoshi; Morikawa, Yo; Miura, Akihiko; Fukui, Toshiki*; Yamasaki, Akito*; et al.
no journal, ,
no abstracts in English
