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adsorption 
lattice defect sites of Prussian blue filled with coordination and crystallization water moleculesIshizaki, Manabu*; Akiba, Sae*; Otani, Asako*; Hoshi, Yuji*; Ono, Kenta*; Matsuba, Mayu*; Togashi, Takanari*; Kanaizuka, Katsuhiko*; Sakamoto, Masatomi*; Takahashi, Akira*; et al.
Dalton Transactions, 42(45), p.16049 - 16055, 2013/12
Times Cited Count：178 Percentile：99.58(Chemistry, Inorganic & Nuclear)We have revealed the fundamental mechanism of specific Cs adsorption into Prussian blue (PB) in order to develop high-performance PB-based Cs adsorbents in the wake of the Fukushima nuclear accident. We compared two types of PB nanoparticles with formulae of Fe
[Fe
(CN)
]3
xH
O (x = 10-15) (PB-1) and (NH)0.70Fe1.10[Fe(CN)]1.7HO (PB-2) with respect to the Cs adsorption ability. The synthesised PB-1, by a common stoichiometric aqueous reaction between 4Fe
and 3[Fe(CN)]
, showed much more efficient Cs adsorption ability than did the commercially available PB-2.
Sakai, Ryutaro; Takeda, Seiji; Kimura, Hideo; Matsuba, Hisashi*
JAEA-Data/Code 2011-005, 107 Pages, 2011/06
JAEA-Data-Code-2011-005.pdf:2.74MB
In the safety assessment for a geological disposal of radioactive waste such as high-level radioactive waste, it is necessary to estimate the hydrological environmental changes affected by external factors such as long-termed earthquake activity and volcanic activity. Therefore it is important to perform the informations including a wide range of future processes and conditions of engineered barriers and geosphere in a systematic manner and to construct scenarios considering external factors. Generation of geological and climatic disruptive events such as earthquake activity, volcanic activity, uplift, subsidence, climatic change and sea-level change and propagation process of their impacts and their types are needed to be clarified in order to understand the phenomena of their influence on a disposal system in case of our country. Japan Atomic Energy Agency started to develop FEP database including the correlation of FEPs and FEP data sheet.
Ikeda, Makoto; Munakata, Masahiro; Sakai, Ryutaro; Kimura, Hideo; Jia, H.*; Matsuba, Hisashi*
Nihon Chikasui Gakkai 2011-Nen Shunki Koenkai Koen Yoshi, p.86 - 91, 2011/05
no abstracts in English
Ikeda, Makoto; Munakata, Masahiro; Sakai, Ryutaro; Fuchiwaki, Hirotaka; Kimura, Hideo; Matsuba, Hisashi*
Nihon Chikasui Gakkai 2010-Nen Shuki Koenkai Koen Yoshi, p.282 - 287, 2010/11
no abstracts in English
Yamakawa, Tadashi*; Matsuba, Hisashi; Munakata, Masahiro; Kimura, Hideo
no journal, ,
This study was conducted to develop methodologies of boundary delineation for regional groundwater flow systems. Geographic Information System, GIS, was applied using available topographic, geologic and hydrologic data for an area of interest. An area of this study was selected as the area, for the reason of its simple geologic setting formed by crystalline rocks and topographically gentle hills of drainage basin. The present study revealed that, taking the potential groundwater flows and characteristics of fractured zones in the area into consideration, the groundwater flow system in the area of this study drainage basin should be bounded by the highest Mountain in the area and the northern part of neighboring drainage basin. The delineated area is larger than understood before.
Kimura, Hideo; Munakata, Masahiro; Hanatani, Ikuo; Sakai, Ryutaro; Namekawa, Maki; Matsuba, Hisashi
no journal, ,
Site selection of high-level radioactive waste geologic disposal on the detailed site investigation will be performed in the early of Heisei 20 years. In such case, the regulatory authority will be need to be concerned on the safety of geologic disposal, migration of radionuclides by groundwater flow from the disposal facility to human environment on the ground surface is very important key issue. We have been developed for the safety assessment methodologies of the regional groundwater flow on the geologic disposal site taking account of the naturally occurring events such as up-lift and erosion, variation of sea level.
Fuchiwaki, Hirotaka; Matsuba, Hisashi; Munakata, Masahiro
no journal, ,
This study was conducted to develop methodologies of regional scale to be assessed for long-term groundwater flow systems. Through the GIS techniques, this study is being advanced. As the application case, at crystalline rock distribution area 3 examples and sedimentary rock distribution area 1 example, this study was executed respectively. In regard to latter 1 example, concerning the analytical object range when future topographical sea level change is considered it examined. As a result, concerning the analytical range for the underground water flow analysis presently for topography, what can set the analytical territory in the rational range making use of the GIS analytical result was found. In addition, it was found that supposition of the time scale is important concerning the analytical range which considers future topographical change and sea level change.
Kimura, Hideo; Munakata, Masahiro; Hanatani, Ikuo; Sakai, Ryutaro; Fuchiwaki, Hirotaka; Matsuba, Hisashi
no journal, ,
no abstracts in English
Namekawa, Maki; Matsuba, Hisashi; Munakata, Masahiro; Kimura, Hideo
no journal, ,
no abstracts in English
Ikeda, Makoto; Munakata, Masahiro; Kimura, Hideo; Ikeda, Norio*; Matsuba, Hisashi*; Nomura, Yoshinori*
no journal, ,
no abstracts in English
