Groundwater geochemical study at the Mizunami Underground Research Laboratory; Development of groundwater filtration techniques while maintaining in-situ hydrochemical conditions

Aosai, Daisuke; Yoshida, Haruo*; Mizuno, Takashi

JAEA-Testing 2009-003, 27 Pages, 2009/10

JAEA-Testing-2009-003.pdf:4.4MB

In this report, we summarize filtration techniques developed and employed at the Underground Research Laboratory. The methods are useful for the physical and chemical characterization of minute particles in contaminated groundwater (including organic and inorganic particles, microbes, etc.), which can effect migration behavior. It is also useful for investigating the adsorption and complexation of particles and elements in groundwater. We performed the filtration of groundwater on site while maintaining in situ pressure and anaerobic conditions and in the laboratory under controlled anaerobic conditions. The results indicate the viability of groundwater filtration under in situ geochemical conditions, if the filtration is performed at controlled pressure and anaerobic conditions and with strict quality control. However, sample contamination occurs if stainless steel equipment is used. Therefore, to avoid contamination, we intend to develop Teflon equipment.

Mizunami Underground Research Laboratory Project, Annual report for fiscal year 2005

Nishio, Kazuhisa; Matsuoka, Toshiyuki; Mikake, Shinichiro; Tsuruta, Tadahiko; Amano, Kenji; Oyama, Takuya; Takeuchi, Ryuji; Saegusa, Hiromitsu; Hama, Katsuhiro; Yoshida, Haruo*; et al.

JAEA-Review 2008-073, 99 Pages, 2009/03

JAEA-Review-2008-073-1.pdf:37.33MB
JAEA-Review-2008-073-2.pdf:37.16MB

Japan Atomic Energy Agency (JAEA) at Tono Geoscience Center (TGC) is developing a geoscientific research project named Mizunami Underground Research Laboratory (MIU) project in crystalline rock environment in order to establish scientific and technological basis for geological disposal of HLW. Geoscientific research at MIU is planned to be carried out in three phases over a period of 20 years; Surface-based Investigation Phase (Phase 1), Construction Phase (Phase 2) and Operation Phase (Phase 3). Currently, the project is under the Construction Phase. This document presents the following results of the research and development performed in 2005 fiscal year, as a part of the Construction Phase based on the MIU Master Plan updated in 2002, (1) Investigation at the MIU Construction Site, (2) Construction at the MIU Construction Site, (3) Research Collaboration.

None

; Yoshida, Hidekazu; Sato, Haruo

Oyo Chishitsu, 43(1), p.24 - 34, 2002/00

https://doi.org/10.5110/jjseg.43.24

None

Sympletic integrators for nonlinear Schrdinger equation

Sasa, Narimasa; Yoshida, Haruo*

Nihon Oyo Suri Gakkai Rombunshi, 10(2), p.119 - 131, 2000/06

http://ci.nii.ac.jp/naid/110001883488

no abstracts in English

Trace element analysis of groundwater at Horonobe area, Hokkaido

Iwatsuki, Teruki; Yoshida, Haruo; Onuki, Toshihiko; Kozai, Naofumi

no journal, , 

Chemical condition and trace elements concentration in groundwater were analyzed by ultra filtration methods at Horonobe area, Hokkaido Island to estimate the colloid transport process of trace elements. The physico-chemical phases of trace element were classified into following three types; (1) trace elements which has unclear size dependency, (2) solute phase or the particle phase less than 10,000 MV, (3) solute phase and particle phase larger than 10,000 MV.

Study on the distribution of trace elements in groundwater colloidal phase

Yoshida, Haruo; Iwatsuki, Teruki; Hama, Katsuhiro

no journal, , 

no abstracts in English

Pressure dependency of complexiation constant between trace element and organics

Iwatsuki, Teruki; Hama, Katsuhiro; Imakita, Tsuyoshi*; Kurimoto, Noritaka*; Yoshida, Haruo*; Kato, Osamu*

no journal, , 

Batch experiments on complexiation reaction between Fe ion and organics were conducted to estimate pressure dependency of reaction constant. The results show that the ratio of metal-organic complex increases with pressure. The reaction constants estimated range from 5.310 to 1.210.

Development ultra filtration technique for groundwater maintaining in situ hydrochemical condition

Aosai, Daisuke; Yoshida, Haruo*; Mizuno, Takashi

no journal, , 

no abstracts in English

Overview of the final report on the surface-based investigation (Phase I) at the Mizunami Underground Laboratory project, 4; Hydrochemical studies

Mizuno, Takashi; Hama, Katsuhiro; Yoshida, Haruo; Sai, Masataka; Amano, Yuki; Hagiwara, Hiroki

no journal, , 

no abstracts in English