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Yamashita, Riyo; Hama, Katsuhiro; Takeuchi, Ryuji; Morikawa, Keita*; Hosoya, Shinichi*; Nakamura, Toshiaki*; Tanaka, Yumiko*
JAEA-Technology 2014-029, 118 Pages, 2014/09
JAEA-Technology-2014-029.pdf:25.16MB
This study is to gain a better understanding of mass transfer phenomena in the geological environment as well as to develop technologies for: measurement of the solute transport parameters, model construction, numerical analysis and validation of all those technologies based on the existing information. As part of solute transport study, laboratory experiments were planned to understand the influence of the geological characteristics of fracture on the solute transport parameters, also understand the differences in test results by the different sizes of the samples used for an experiment, and moreover to validate the parameters obtained by numerical analysis.
Narita, Hirokazu*; Tanaka, Mikiya*; Sato, Yumiko*; Yaita, Tsuyoshi; Okamoto, Yoshihiro
Solvent Extraction and Ion Exchange, 24(5), p.693 - 702, 2006/05
Times Cited Count：14 Percentile：47.32(Chemistry, Multidisciplinary)The structure of the Ni(II) complex extracted with the commercial hydroxyoxime, LIX84I, and the effect of adding bis(2-ethylhexyl)phosphoricacid(D2EHPA) to LIX84I on the extraction rate and the coordination of Ni(II) were investigated by solvent extraction and XAFS methods. The XANES spectrum and the curve fit soft the EXAFS spectrum of the Ni-LIX84I complex showed that the complex is four-coordinate square-planar with a 1:2 stoichiometry. In the Ni(II)-D2EHPA-LIX84I system, the coordination geometry changes to six-coordinate octahedral with an increase in the D2EHPA concentration. Although the rate of Ni(II) extraction with LIX84I is significantly accelerated by adding as small amount of D2EHPA, most of the Ni(II) complexes extracted with this organic solution remain square-planar. This indicates that the effect of D2EHPA on the increase in the extraction rate would be attributed to a behavior of this ligand like catalysis.
Ishihara, Yoshinao*; Chijimatsu, Masakazu*; Neyama, Atsushi*; Tanaka, Yumiko*; Amemiya, Kiyoshi*; Shiozaki, Isao*; Ito, Takaya*
JNC TJ8400 2003-033, 118 Pages, 2003/02
JNC-TJ8400-2003-033.pdf:1.66MB
In order to realize a coupling analysis in the near field of the geological disposal system, the coupling analysis code on the thermo-hydro-mechanical-chemical phenomena by THAMES, Dtransu and phreeqe60, which are existing analysis code, is developed in this study. And we carried out the case analysis on the thermo-hydro-mechanical-chemical phenomena by this code.
Ishihara, Yoshinao*; Chijimatsu, Masakazu*; Neyama, Atsushi*; Tanaka, Yumiko*; Amemiya, Kiyoshi*; Shiozaki, Isao*; Ito, Takaya*
JNC TJ8400 2003-032, 237 Pages, 2003/02
In order to realize a coupling analysis in the near field of the geological disposal system, the coupling analysis code on the thermo-hydro-mechanical-chemical phenomena by THAMES, Dtransu and phreeqe60, which are existing analysis code, is developed in this study. And we carried out the case analysis on the thermo-hydro-mechanical-chemical phenomena by this code.
Kametaka, Masao*; Sakai, Toru*; Inada, Noriyuki*; Tanaka, Yumiko*; Okazaki, Kazuhiko*; Suzuki, Yuji*; Aoki, Kazuhiro; Tanaka, Yoshihiro; Seshimo, Kazuyoshi; Nakayama, Kazuhiko
no journal, ,
no abstracts in English
Sakai, Toru*; Kametaka, Masao*; Tanaka, Yumiko*; Aoki, Kazuhiro; Tanaka, Yoshihiro; Niwa, Masakazu; Seshimo, Kazuyoshi
no journal, ,
no abstracts in English
Kametaka, Masao*; Sakai, Toru*; Tanaka, Yumiko*; Aoki, Kazuhiro; Tanaka, Yoshihiro*; Seshimo, Kazuyoshi; Niwa, Masakazu; Masuda, Yuki
no journal, ,
no abstracts in English
Kametaka, Masao*; Tanaka, Yumiko*; Iwasaki, Etsuo*; Aoki, Kazuhiro; Tanaka, Yukumo; Yoshida, Takumi; Seshimo, Kazuyoshi
no journal, ,
no abstracts in English
