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Arai, Yoichi; Watanabe, So; Ono, Shimpei; Nakamura, Masahiro; Shibata, Atsuhiro; Nakamura, Fumiya*; Arai, Tsuyoshi*; Seko, Noriaki*; Hoshina, Hiroyuki*; Hagura, Naoto*; et al.
International Journal of PIXE, 29(1&2), p.17 - 31, 2019/00
The spent PUREX solvent containing U and Pu is generated from the reprocessing process of spent nuclear fuel. The nuclear material removal is important for the safe storage or disposal of the spent solvent. Our previous study revealed that the adsorbent with the iminodiacetic acid (IDA) functional group is one of the most promising materials for designing the nuclear material recovery process. Accordingly, an IDA-type adsorbent was synthesized by using graft polymerization technology or a chemical reaction to improve the adsorption rate and capacity. The synthesized IDA-type adsorbent was characterized by micro particle-induced X-ray emission (PIXE) and extended X-ray absorption fine structure (EXAFS) analyses. The micro-PIXE analysis revealed that Zr was adsorbed on the whole synthesized adsorbents and quantified the microamount of adsorbed Zr. Moreover, EXAFS suggested that Zr in the aqueous solution and solvent can be trapped by the IDA group with different mechanisms.
Nakai, Hisaaki*; Seko, Noriaki; Tamada, Masao; Temma, Tsuyoshi*; Oguma, Masaomi*
Nihon Ion Kokan Gakkai-Shi, 15(1), p.10 - 15, 2004/01
Removal of cadmium from the boiled mid-gut gland of the scallop was investigated to utilize the waste of scallop processing for the fertilizer and the livestock feed. Twelve kinds of acid solutions (0.1M) were evaluated on the point of the cadmium elution, toxicity, and price. The selected malic acid could wash out cadmium less than 0.5ppm in the boiled mid-gut gland by optimizing the acid concentration and the repitaion of rinse. It was confirmed that the concentration of the eluted cadmium was reduced to 0.1ppm and less than by the iminodiacetic acid adsorbent synthesized with radiation-induced graftpolymerization.
Matsushima, Ryotatsu; Ito, Yoshiyuki; Kojima, Junji; Masuzawa, Shun*; Arai, Tsuyoshi*
no journal, ,
no abstracts in English
Ono, Shimpei; Arai, Yoichi; Watanabe, So; Seko, Noriaki*; Kasai, Noboru*; Hoshina, Hiroyuki*; Shibata, Atsuhiro; Nomura, Kazunori
no journal, ,
no abstracts in English
Ono, Shimpei; Arai, Yoichi; Watanabe, So; Seko, Noriaki*; Kasai, Noboru*; Hoshina, Hiroyuki*; Shibata, Atsuhiro; Nomura, Kazunori
no journal, ,
no abstracts in English
Kida, Fukuka*; Nakamura, Fumiya*; Arai, Tsuyoshi*; Matsushima, Ryotatsu; Saito, Yasuo
no journal, ,
no abstracts in English
Arai, Yoichi; Watanabe, So; Ono, Shimpei; Nomura, Kazunori; Nakamura, Fumiya*; Arai, Tsuyoshi*; Seko, Noriaki*; Hoshina, Hiroyuki*; Kubota, Toshio*
no journal, ,
no abstracts in English
Takeda, Keisuke*; Arai, Yoichi; Watanabe, So; Fukumoto, Hiroki*; Ago, Tomohiro*
no journal, ,
no abstracts in English
Fujikawa, Hisaharu*; Arai, Yoichi; Watanabe, So; Fukumoto, Hiroki*; Ago, Tomohiro*
no journal, ,
no abstracts in English
Takeda, Keisuke*; Arai, Yoichi; Watanabe, So; Fukumoto, Hiroki*; Ago, Tomohiro*
no journal, ,
no abstracts in English
Fujikawa, Toshiharu*; Arai, Yoichi; Watanabe, So; Fukumoto, Hiroki*; Ago, Tomohiro*
no journal, ,
no abstracts in English
松村 達郎; 鈴木 英哉
not registered
JP, 2019-151070 
Patent licensing information Patent publication (In Japanese)
【課題】鉱工業分野や原子力分野で利用できるアメリシウムの効率的な抽出方法を提供することを目的とする。 【解決手段】アメリシウムを含む酸性水溶液を、下記一般式(A)で表されるイミノ二酢酸アミドの存在下で有機溶媒に接触させることにより、アメリシウムを有機溶媒に溶解させ、さらに、ジエチレントリアミン五酢酸(DTPA)などの窒素ドナー系の水溶性錯化剤を含む酸性水溶液と接触させて逆抽出を行うことにより、アメリシウムを効率良く抽出することができる。
