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Sano, Yuichi; Sakamoto, Atsushi; Kofuji, Hirohide; Takeuchi, Masayuki
Proceedings of 21st Pacific Basin Nuclear Conference (PBNC 2018) (USB Flash Drive), p.314 - 318, 2018/09
The effect of operational condition of the annular centrifugal contactor (ACC) on U extraction behavior was investigated by computational fluid dynamics (CFD) analysis considering mass transfer between aqueous and organic phases, and the calculation results were validated experimentally. The CFD analysis with ANSYS FLUENT was carried out using the Eulerian multi-fluid approach with a standard k-
turbulence model. In order to calculate the droplet size of the dispersed phase and mass transfer between aqueous and organic phases, user-defined functions (UDF) were created. The changes of U extraction performance, i.e. U stage efficiency, with the rotor speed and the O/A ratio (= organic flowrate / aqueous flowrate) were calculated, and these showed a good agreement with experimental results.
Kudo, Atsunari; Kurabayashi, Kazuaki; Yanagibashi, Futoshi; Sasaki, Shunichi; Sato, Takehiko; Fujimoto, Ikuo; Obu, Tomoyuki
Proceedings of 2017 International Congress on Advances in Nuclear Power Plants (ICAPP 2017) (CD-ROM), 6 Pages, 2017/04
The Co-processing process is the extraction process to recover Pu/U mixed product solution with given Pu/U ratio for improving of nuclear proliferation resistance. In addition, Np is also recovered with U and Pu because Np is one of minor actinides and a long-lived radionuclide and Np has the extractability into TBP solvent. Development of its flowsheet achieves to decrease environmental effect of waste materials. The orientation of development about Co-processing process is to demonstrate of reprocessing the future spent fuels from a LWR, a LWR-MOX hybrid, and a FR-MOX with one cycle. We demonstrated by use of miniature reflux-type centrifugal contactors at the partitioning unit. The test conditions of the Pu/U ratio in the loaded solvents were 1%, 3%, and 5% considering the composition of spent fuels. We used the HAN as the reductant of Np (VI) for back extraction. The results of these tests were very good. We got the prospect of U, Pu, and Np Co-processing flowsheet.
Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Okamura, Nobuo; Koizumi, Kenji
Proceedings of 23rd International Conference on Nuclear Engineering (ICONE-23) (DVD-ROM), 5 Pages, 2015/05
Morita, Yasuji; J.-P.Glatz*; Kubota, Masumitsu; L.Koch*; G.Pagliosa*; K.Roemer*; A.Nicholl*
Solvent Extr. Ion Exch., 14(3), p.385 - 400, 1996/00
Times Cited Count：87 Percentile：92.97(Chemistry, Multidisciplinary)no abstracts in English
Sakamoto, Atsushi; Takeuchi, Masayuki; Ogino, Hideki; Koizumi, Kenji; Sawahata, Osamu*; Sakamoto, Yukio*; Akutsu, Koichi*
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Arai, Yoichi; Takeuchi, Masayuki; Sakamoto, Atsushi; Ohata, Fumikazu; Okamura, Nobuo; Ogino, Hideki; Koizumi, Kenji
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Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Ito, Kazuyuki*; Sekita, Satoshi*; Sakamoto, Yukio*; Akutsu, Koichi*
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Sakamoto, Atsushi; Okamura, Nobuo; Sano, Yuichi; Takeuchi, Masayuki
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Kudo, Atsunari; Yanagibashi, Futoshi; Hoshi, Takahiro; Tada, Kazuhito; Sato, Takehiko; Fujimoto, Ikuo; Obu, Tomoyuki
no journal, ,
no abstracts in English
Takeuchi, Masayuki; Sakamoto, Atsushi; Sano, Yuichi; Ito, Kazuyuki*; Sekita, Satoshi*; Sakamoto, Yukio*; Akutsu, Koichi*
no journal, ,
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Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Ito, Kazuyuki*; Sekita, Satoshi*; Sakamoto, Yukio*; Akutsu, Koichi*
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Kibe, Satoshi; Fujisaku, Kazuhiko*; Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Suzuki, Hideya; Tsubata, Yasuhiro; Matsumura, Tatsuro
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Kudo, Atsunari; Kurabayashi, Kazuaki; Yanagibashi, Futoshi; Sato, Takehiko; Fujimoto, Ikuo; Obu, Tomoyuki
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Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Matsuura, Takanobu*; Sakamoto, Yukio*; Sekita, Satoshi*
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Kudo, Atsunari; Nagaoka, Shinichi; Kurabayashi, Kazuaki; Yanagibashi, Futoshi; Obu, Tomoyuki
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Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Watanabe, Masayuki; Koizumi, Kenji
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Sano, Yuichi; Sakamoto, Atsushi; Kofuji, Hirohide; Takeuchi, Masayuki
no journal, ,
The effect of operational condition of ACC on U extraction behavior was investigated by computational fluid dynamics (CFD) analysis considering mass transfer between aqueous and organic phases, and the calculation results were validated experimentally. The changes of U extraction performance, i.e. U mass transfer efficiency, with the O/A ratio (= organic flowrate / aqueous flowrate) and rotor speed were calculated, and these showed a good agreement with experimental results.
Sakamoto, Atsushi; Sano, Yuichi; Kofuji, Hirohide; Watanabe, Masayuki; Koizumi, Kenji; Okamoto, Sanae*; Misumi, Ryuta*; Kaminoyama, Meguru*
no journal, ,
no abstracts in English
Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki
no journal, ,
no abstracts in English
