Journal of Ion Exchange
Online ISSN : 1884-3360
Print ISSN : 0915-860X
ISSN-L : 0915-860X
Volume 19, Issue 1
Displaying 1-5 of 5 articles from this issue
  • Takeshi HASHIMOTO, Takashi HAYASHITA
    2008 Volume 19 Issue 1 Pages 2-11
    Published: January 20, 2008
    Released on J-STAGE: March 18, 2010
    JOURNAL FREE ACCESS
    For ion and molecule recognition based on supramolecular chemistry, organic receptors are often used as molecular probes. In addition, the metal complex formation with various organic ligands has played an important role in hostguest chemistry. In this paper, “molecular recognition based on metal complexes” using so-called Werner-type metal complexes is reviewed. In these systems, the metal complexes (compounds having metal-ligand coordinations) are acting as a host (chemosensor or molecule probe), and they selectively recognize various guest molecules with electro and/or photo-sensitive signal transductions. As a topic of “molecular recognition based on metal complexes”, we have focused on the recent research progress in 1) ion (cation, anion) recognition, 2) biomolecule recognition, and 3) recognition by polymer complexes, from the viewpoint of authors' interest.
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  • Hitoshi MIMURA
    2008 Volume 19 Issue 1 Pages 12-28
    Published: January 20, 2008
    Released on J-STAGE: March 18, 2010
    JOURNAL FREE ACCESS
    The development of advanced nuclide separation system is expected from the standpoint of nuclear nonproliferation, environmental remediation and reuse of valuable nuclides in the field of spent nuclear fuel reprocessing and radioactive waste treatment, instead of the present vitrification and geological disposal system. The advanced nuclide separation methods are developed in various countries by combining ion exchange and solvent extraction. This special issue deals with the explanation of present state and subjects on (1) Reprocessing and radioactive waste treatment, (2) Partitioning, (3) Nuclide separation using ion-exchange method, (4) Advanced nuclide separation methods in various countries, and summarizes the positioning and expectation for ion-exchange techniques in the nuclide separation system.
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  • Shintaro TSUZUKI, Hidemi TAGAWA, Futoshi YAMASHITA, Ryutaro OKAMOTO
    2008 Volume 19 Issue 1 Pages 29-34
    Published: January 20, 2008
    Released on J-STAGE: March 18, 2010
    JOURNAL FREE ACCESS
    It is required to maintain water quality supplied to steam generator to the water designed based on its water chemistry in order to keep the sound operation of nuclear power plants or fossil power plants. Condensate Polishing Plant (CPP) is installed for removing ions in the water which uses a mixed bed of cation exchange resin and anion exchange resin.
    We have developed new generation of CPP resin. The product is a unique combination of super high exchange capacity cation exchange resin and high fouling resistant anion exchange resin. The CPP resin has been used in many power plants.
    Amberjet 1006 was developed as a cation exchange resin with high oxidative stability, high operational capacity and New IRA900CP was developed as an anion exchange resin with high fouling resistant to leachables released out of cation exchange resin by oxidative degradation over the service period.
    The novel CPP resin was first used in 2000 and has now been used in many power plants in Japan. The CPP resin has been giving excellent quality of water.
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  • 2008 Volume 19 Issue 1 Pages 53a-56
    Published: 2008
    Released on J-STAGE: March 18, 2010
    JOURNAL FREE ACCESS
  • 2008 Volume 19 Issue 1 Pages 53b-56
    Published: 2008
    Released on J-STAGE: March 18, 2010
    JOURNAL FREE ACCESS
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