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Okamura, Hiroyuki
Nihon Ion Kokan Gakkai-Shi, 35(1), p.1 - 8, 2024/01
Ionic liquids have unique properties that are quite different from conventional molecular liquids, and have therefore attracted much attention in various fields as novel functional media. When ionic liquids are used as extraction media in solvent extraction, they can also act as "liquid ion exchangers", and it is thus expected to exhibit superior extractability and separability compared with those in conventional organic solvent systems. The author has focused on these characteristics of ionic liquids, and have studied on the extraction separation of metal ions using ionic liquids as extraction media, with the aim of developing highly efficient solvent extraction systems. This article presents the evaluation of the solvent properties of ionic liquids in metal ion extraction, the separation of rare earth metals by the synergistic effect in ionic liquid systems, and the development of a macrocyclic extractant and the structure analysis of the metal complex extracted into the ionic liquid.
Onishi, Takashi; Koyama, Shinichi; Mimura, Hitoshi*
Nihon Ion Kokan Gakkai-Shi, 31(3), p.43 - 49, 2020/10
-P adsorbent on extraction chromatography processWatanabe, So; Sano, Yuichi; Sanda, Shuhei*; Sakurai, Shota*; Arai, Tsuyoshi*
Nihon Ion Kokan Gakkai-Shi, 30(1), p.8 - 16, 2019/01
Watanabe, So; Suzuki, Hideya; Goto, Ichiro*; Kofuji, Hirohide; Matsumura, Tatsuro
Nihon Ion Kokan Gakkai-Shi, 29(3), p.71 - 75, 2018/09
Shimojo, Kojiro
Nihon Ion Kokan Gakkai-Shi, 28(1), p.1 - 10, 2017/01
Development of metal separating reagents with high selectivity is necessary for efficient separation and recovery of valuable metals contained in industrial wastes, and removal and detection of toxic metals. We have developed novel metal separating ligands with a diglycolamic acid (DGAA) framework. The ligands have a tridentate coordination structure consisting of an amide group and a carboxy group connected by an ether chain and provide a metal separation ability superior to that of commercial ligands. Since the ligands can be synthesized simply in one step, this helps to reduce the production costs of the ligands. In the present review article, we report the extraction characteristics of DGAA-type ligand for 56 kinds of metal ions, extraction separation of rare-earth metal ions, and removal of toxic metal ions. Furthermore, a one-pot biological approach to fabricate DGAA-decorated gold nanoparticles has been developed using the DGAA-type ligand fused to the N-terminus of a gold-binding peptide. It was found that the DGAA-decorated gold nanoparticles can act as a high-sensitive colorimetric sensor for detecting toxic metal ions with color change.
Nagoshi, Kohei*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi; Takeuchi, Masayuki; Sato, Mutsumi*; Oikawa, Hiroshi*
Nihon Ion Kokan Gakkai-Shi, 28(1), p.11 - 18, 2017/01
no abstracts in English
Shibata, Takuya; Seko, Noriaki; Amada, Haruyo; Kasai, Noboru; Saiki, Seiichi; Hoshina, Hiroyuki; Ueki, Yuji
Nihon Ion Kokan Gakkai-Shi, 26(1), p.9 - 14, 2015/01
Onishi, Takashi; Koyama, Shinichi; Masud, R. S.*; Kawamura, Takuya*; Mimura, Hitoshi*; Niibori, Yuichi*
Nihon Ion Kokan Gakkai-Shi, 25(4), p.220 - 227, 2014/11
no abstracts in English
Saiki, Seiichi; Shibata, Takuya; Hoshina, Hiroyuki; Ueki, Yuji; Kasai, Noboru; Seko, Noriaki
Nihon Ion Kokan Gakkai-Shi, 25(4), p.170 - 175, 2014/11
Hayashi, Natsuki*; Hoshina, Hiroyuki; Amada, Haruyo; Yamanobe, Takeshi*; Seko, Noriaki
Nihon Ion Kokan Gakkai-Shi, 25(4), p.105 - 108, 2014/11
Hoshina, Hiroyuki; Kasai, Noboru; Amada, Haruyo; Takahashi, Makikatsu*; Tanaka, Kazuya*; Seko, Noriaki
Nihon Ion Kokan Gakkai-Shi, 25(4), p.248 - 251, 2014/11
Amada, Haruyo; Takahashi, Makikatsu*; Hoshina, Hiroyuki; Seko, Noriaki
Nihon Ion Kokan Gakkai-Shi, 25(4), p.109 - 113, 2014/11
Ueki, Yuji; Saiki, Seiichi; Seko, Noriaki
Nihon Ion Kokan Gakkai-Shi, 25(4), p.99 - 104, 2014/11
Yamada, Hirohisa*; Yokoyama, Shingo*; Watanabe, Yujiro*; Suzuki, Masaya*; Suzuki, Shinichi; Hatta, Tamao*
Nihon Ion Kokan Gakkai-Shi, 25(4), p.207 - 211, 2014/11
Seko, Noriaki; Tamada, Masao
Nihon Ion Kokan Gakkai-Shi, 23(2), p.51 - 58, 2012/05
no abstracts in English
Mimura, Hitoshi*; Yamagishi, Isao
Nihon Ion Kokan Gakkai-Shi, 23(1), p.6 - 20, 2012/02
Large amounts of seawater contaminated with radioactive cesium accumulated in the nuclear accident of Fukushima NPP1. As of December, 2011, the circulating injection cooling system is effectively operated and the cold shutdown is completed, while the amounts of high-activity-level water are estimated to be over 200,000 m
in future. However, at present, the treatment and disposal methods for the solid wastes (zeolites, insoluble ferrocyanides and crystalline silicotitanate) are not yet decided. In particular, there is no experience in the treatment and disposal of high decontamination solid materials such as insoluble ferrocyanides and crystalline silicotitanate. Hence the development of effective treatment and disposal methods are very urgent and important subjects. This special issue deals with the characterization and adsorption properties of selective adsorbents for high decontamination of cesium and the subjects for the treatment and disposal of solid wastes.
Shimojo, Kojiro; Goto, Masahiro*
Nihon Ion Kokan Gakkai-Shi, 22(2), p.65 - 72, 2011/06
Ionic liquids have attracted much attention as the third liquid because they possess different properties from those of water and organic solvents. Their unique properties have encouraged us to develop liquid-liquid extraction systems using ionic liquids as extracting media. In this review, we describe metal ion and protein extractions in ionic liquid-water biphasic systems using the size recognition ability of macrocyclic compounds. Furthermore, we report the potential utility of ionic liquids as novel reaction media for biological catalysis with proteins extracted.
Wada, Go*; Ishihara, Ryo*; Miyoshi, Kazuyoshi*; Umeno, Daisuke*; Saito, Kyoichi*; Asai, Shiho; Yamada, Shinsuke*; Hirota, Hideyuki*
Nihon Ion Kokan Gakkai-Shi, 22(2), p.47 - 52, 2011/01
no abstracts in English
Hoshina, Hiroyuki; Seko, Noriaki; Ueki, Yuji; Tamada, Masao; Iyatomi, Yosuke
Nihon Ion Kokan Gakkai-Shi, 21(3), p.153 - 156, 2010/09
Phiriyatorn, S.*; Hoshina, Hiroyuki; Seko, Noriaki; Tamada, Masao
Nihon Ion Kokan Gakkai-Shi, 21(3), p.157 - 160, 2010/09
