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Kibe, Satoshi; Fujisaku, Kazuhiko*; Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Suzuki, Hideya; Tsubata, Yasuhiro; Matsumura, Tatsuro
JAEA-Research 2016-024, 40 Pages, 2017/02
JAEA-Research-2016-024.pdf:6.73MB
The Japan Atomic Energy Agency has been developing some flowsheets with TDdDGA (N,N,N,Ntetradodecyldiglycolamide) extractant to recover MA (minor actinide) from raffinate. In this study, countercurrent experiments with the improved flowsheet, e.g. the addition of alcohol into the solvent for preventing the precipitation, were performed using miniature centrifugal contactors in order to compare the extraction/stripping behavior of each element with the mixer-settler type. As a result, no entrainments were observed and sufficient phase separation was achieved by centrifugal contactors without any abnormal fluid behavior, such as overflow. The extraction and stripping of Ln(III) which show the similar tendencies as MA could be achieved successfully, especially their stripping proceeded more efficiently in centrifugal contactors. This might be due to the increase in stripping rates by improving the flowsheet and to superior phase separation performance of centrifugal contactors.
Kibe, Satoshi; Fujisaku, Kazuhiko*; Ambai, Hiromu; Sakamoto, Atsushi; Sano, Yuichi; Takeuchi, Masayuki; Suzuki, Hideya; Tsubata, Yasuhiro; Matsumura, Tatsuro
JAEA-Research 2015-021, 40 Pages, 2016/02
JAEA-Research-2015-021.pdf:2.3MB
The flowsheet with TDdDGA extractant has been being developed for recovering MA from PUREX raffinate. In the previous study, the yields of MA and other elements in countercurrent extraction/stripping experiments using mixer-settlers were not enough for the target and it would be due to the insufficient phase (aqueous/organic) separation. In this study, we carried out countercurrent experiments with surrogate PUREX raffinate using centrifugal contactors which had superior phase separation ability, and evaluated the extraction/stripping behavior of each element. During the operation, abnormal fluid behavior, such as overflow and entrainment, was not observed, and sufficient phase separation was achieved by centrifugal contactors. Extraction behavior of lanthanides was similar to that in mixer-settlers, but their stripping efficiencies decreased. This would be due to shorter residence time in mixing zone.
Yoshida, Fumiko; Nagashima, Keisuke; Tsubouchi, Masaaki; Ochi, Yoshihiro; Maruyama, Momoko; Sugiyama, Akira
Japanese Journal of Applied Physics, 55(1), p.012201_1 - 012201_5, 2016/01
Times Cited Count：6 Percentile：33.92(Physics, Applied)Nariai, Hideki*
JAERI-Tech 2002-009, 60 Pages, 2002/03
JAERI-Tech-2002-009.pdf:7.73MB
no abstracts in English
Suzuki, Yasuyuki*; Li, J.; Maekawa, Yasunari; Yoshida, Masaru; Maeyama, Katsuya*; Yonezawa, Noriyuki*
Nihon Kagakkai-Shi, 2002(2), p.255 - 259, 2002/02
The hydrophilic surface of poly(ethylene terephthalate) (PET) film, obtained by partial hydrolysis, was converted to hydrophobic one under dry air, saturated water vapor atmosphere, nitrogen, and vacuum at temperatures ranging from 0 to 80
C. The hydrophilicity of the surface increased significantly faster under the saturated water vapor although it was the most hydrophilic in the examined conditions. From the dependence of the absolute temperature on the rate of hydrophilicity change for each storage condition, a discontinuous point at ca. 50C was observable only under the water vapor condition. This relation indicates that the appreciable acceleration of the hydrophilicity change on the surface under the hydrophilic condition might be resulted from the increase of the surface mobility due to the water adsorption on the PET surface.
Nishi, Yoshihisa*; *; *; *; Matsubayashi, Masahito; Tsuruno, Akira
Fifth World Conf. on Neutron Radiography, 0, p.548 - 555, 1996/00
no abstracts in English
Ishihara, Masahiro; Iyoku, Tatsuo; Futakawa, Masatoshi
Zairyo, 42(472), p.15 - 21, 1993/01
no abstracts in English
Maeda, Mitsuru; Fujine, Sachio; *; *
Transactions of the American Nuclear Society, 66, p.78 - 80, 1992/11
no abstracts in English
Fujine, Sachio; M.Kluth*; J.Lamla*; H.Goldacker*
Proc. of the Symp. on Solvent Extraction 1989, p.141 - 146, 1989/00
no abstracts in English
; *; *; *; *
Journal of Nuclear Science and Technology, 22(4), p.269 - 283, 1985/00
Times Cited Count：5 Percentile：60.42(Nuclear Science & Technology)no abstracts in English
; Kozawa, Yoshiyuki*; *; *
Journal of Nuclear Science and Technology, 20(12), p.1006 - 1022, 1983/00
Times Cited Count：8 Percentile：68.8(Nuclear Science & Technology)no abstracts in English
;
JAERI-M 9683, 140 Pages, 1981/10
no abstracts in English
; ; ;
JAERI-M 8107, 21 Pages, 1979/03
no abstracts in English
;
Kotai Butsuri, 14(6), p.331 - 333, 1979/00
no abstracts in English
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Journal of Nuclear Science and Technology, 4(11), p.570 - 577, 1967/00
Times Cited Count：2no abstracts in English
Sanokawa, Konomo
Bull.Japan Soc.Precision Engng., 1(4), p.300 - 305, 1966/00
no abstracts in English
Sano, Yuichi; Kibe, Satoshi; Sakamoto, Atsushi; Takeuchi, Masayuki; Suzuki, Hideya; Tsubata, Yasuhiro; Matsumura, Tatsuro
no journal, ,
The flowsheet with TDdDGA extractant for recovering MA(III) from PUREX raffinate was evaluated by counter-current trials with surrogate PUREX raffinate using mixer-settlers and centrifugal contactors. The extraction and back-extraction of Ln(III) which show the similar tendencies as MA(III) could be achieved successfully, especially their back-extraction proceeded more efficiently in centrifugal contactors, which might be due to superior phase separation performance of centrifugal contactors.
Kawakubo, Shohei*; Ono, Hirokazu; Matsui, Hiroya; Kato, Takeshi*
no journal, ,
no abstracts in English
Kobayashi, Yohei*; Saito, Junichi; Shibutani, Hideo*
no journal, ,
