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Naito, Ryo*; Kato, Fumihiro*; Arai, Tsuyoshi*; Usui, Akane; Onishi, Takashi; Tanaka, Kosuke; Matsukura, Minoru*; Mimura, Hitoshi*
no journal, ,
no abstracts in English
Sato, Hiromori*; Yoshida, Masaaki*; Nemoto, Shuhei*; Nagase, Midori*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi
no journal, ,
We focused on the extraction chromatography technique using HONTA impregnated adsorbent for MA (III)/Ln (III) separation from high-level radioactive liquid waste. In this study, we had the column test for evaluating the adsorption performance with the improved carrier.
Iwamoto, Hibiki*; Sato, Hiromori*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi
no journal, ,
We investigated the effects of nitric acid, TBP and salting out reagent concentrations on the rare earth element (Ln (III)) extraction using TBP, which is inexpensive and has selective extractability. It was suggested that Ln (III) can be extracted by controlling the nitric acid and nitrate ion concentrations.
Tsuchiya, Tatsumi*; Okada, Makoto*; Watanabe, So; Sano, Yuichi; Arai, Tsuyoshi*; Matsuura, Haruaki*
no journal, ,
Structural analysis was performed by EXAFS measurement on samples in which lanthanide (Ln (III)) was adsorbed on an adsorbent impregnated with various NTA amide extracts. The adsorption behavior of NTA amide adsorbents with different side chains suggested that the distance to oxygen around an element changes due to the difference in side chains.
Matsushita, Hatsuki*; Igarashi, Kai*; Isozaki, Kazuma*; Sakai, Takaaki*; Kato, Shinya; Matsuba, Kenichi; Kamiyama, Kenji
no journal, ,
no abstracts in English
Maeda, Chisato*; Kimoto, Yuko*; Yoneyama, Kai*; Matsuura, Haruaki*; Sato, Isamu*; Miwa, Shuhei; Suzuki, Eriko
no journal, ,
In order to investigate the influence of aggregate size on Cs penetration behavior into concrete, the penetration tests of mortar and concretes, which aggregates were varied in the size (the weight ratio of aggregates to mortar were constant), into CsCl and CsI solution were carried out and the Cs concentrations along the depth from surface were measured. The Cs concentration penetrated from CsI solution increased with decrease of the aggregate size, whereas the Cs concentration penetrated from CsCl solution did not depend on the aggregate size. It is considered that the dominant penetration path was mortar from CsI solution and interface of mortar and aggregates from CsCl solution.