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Hama, Katsuhiro
JAEA-Data/Code 2016-006, 23 Pages, 2016/07
JAEA-Data-Code-2016-006.pdf:1.6MB
The Mizunami Underground Research Laboratory project is being pursued by the Japan Atomic Energy Agency to enhance the reliability of relevant disposal technologies through investigations of the deep geological environment within the host crystalline rock at Mizunami City in Gifu Prefecture, central Japan. The project proceeds in three overlapping phases, Surface-based investigation Phase, Construction Phase and Operation Phase. The MIU Project has been ongoing the Phase III. As a part of the Phase III investigation, evaluation of mass transport property using natural Uranium-series and Thorium-series nuclides has been carried out. In this report, the compilation of existing data and preliminary evaluation was carried out.
Sakamoto, Yoshiaki; Ishii, Tomoaki*; Inagawa, Satoshi*; Gunji, Yasuyoshi*; Takebe, Shinichi; Ogawa, Hiromichi; Sasaki, Tomozo*
Genshiryoku Bakkuendo Kenkyu, 8(1), p.65 - 76, 2001/09
In order to study adsorption behavior of U series radionuclides(Pb, Ra, Th, Ac, Pa and U) in aerated zone environment (loam-rein water system) and aquifer environment(sand-groundwater system) for safety assessment of U bearing waste), pH dependence of distribution coefficients of each element have been obtained. The pH dependence of distribution coefficients of U, Ac, Th, Ra and Pb was analyzed by model calculation of adsorption behavior based on chemical forms of each elements and soil surface characteristics, which are a cation exchange capacity and surface charge. From model calculation of adsorption behavior, the distribution coefficients' values and adsorption behavior of Pb, Ra, Th, Ac and U could be showed by a combination of cation exchange and surface-complexation adsorption model.
Ishii, Tomoaki*; Inagawa, Satoshi*; Gunji, Yasuyoshi*; Sakamoto, Yoshiaki; Takebe, Shinichi; Ogawa, Hiromichi; Sasaki, Tomozo*
Genshiryoku Bakkuendo Kenkyu, 8(1), p.55 - 64, 2001/09
Distribution coefficients of Uranium series nuclide(Pb,Ra,Ac,Th,Pa and U) were obtained under aerated zone environment and aquifer environment, for the safety evaluation of shallow underground disposal of uranium bearing waste. The distribution coefficients of them on 4 kinds of soil such as the loam in the rain water as for aerated zone environment and on 3 kinds of soil and rock such as the sand in groundwater as for aquifer environment have been measured by batch method. The distribution coefficients in aerated zone environment were one or two orders in magnitude higher than that in aquifer environment, except Ac. And, there was approximately the linear correlation on the relationship between cation exchange capacity and specific surface area, which are representative physical property of the soil, and distribution coefficient of lead, radium and protactinium.
Yanase, Nobuyuki; Sato, Tsutomu; ; Sekine, Keiichi
Radiochimica Acta, 82, p.319 - 325, 1998/00
no abstracts in English
Yanase, Nobuyuki; T.E.Payne*; Sekine, Keiichi
Geochemical Journal, 29, p.31 - 54, 1995/00
Times Cited Count：23 Percentile：46.66(Geochemistry & Geophysics)no abstracts in English
Yanase, Nobuyuki; Sekine, Keiichi
Materials Research Society Symposium Proceedings, Vol.353, 0, p.1235 - 1242, 1995/00
no abstracts in English
Th in uranium series nuclides migrationOnuki, Toshihiko; *; Murakami, Takashi
Mater. Res. Soc. Symp. Proc., Vol. 212, p.733 - 740, 1991/00
no abstracts in English
Onuki, Toshihiko; Murakami, Takashi; Sekine, Keiichi; Yanase, Nobuyuki; Isobe, Hiroshi; Kobayashi, Yoshii
Materials Research Society Symposium Proceedings, Vol. 176, p.607 - 614, 1990/00
no abstracts in English
Takeuchi, Erina; Tomita, Jumpei; Ohara, Yoshiyuki
no journal, ,
no abstracts in English
