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Study on the potential ability of clay buffer material to work as a barrier for migration of anionic radionuclides

Research Project

Project/Area Number 23656581
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Nuclear engineering
Research InstitutionHokkaido University

Principal Investigator

KOZAKI Tamotsu  北海道大学, 工学(系)研究科(研究院), 教授 (60234746)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords高レベル放射性廃棄物 / 地層処分 / ベントナイト / 拡散 / 鉄 / 腐食 / 見かけの拡散係数 / 活性化エネルギー
Research Abstract

Compacted Na-bentonite, of which major mineral is Na-montmorillonite, is a candidate buffer material for the geological disposal of high level radioactive waste. After a carbon steel container corrodes in the buffer material, iron corrosion products may interact with the buffer materials, resulting in the alterations of Na-montmorillonite including replacements of exchangeable cations of Na+ with Fe(II) ions. Therefore, it is necessary to understand the effects of the alteration on the performance of bentonite buffer material. In this study, diffusion behavior of Cl- ions in Fe(III)-montmorillonite sample, which had been prepared in a laboratory, was studied based on the results of both non-steady diffusion and through-diffusion experiments, together with chemical and elemental analyses of Fe(III)-montmorillonite sample.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (6 results)

All 2012 2011

All Presentation (6 results)

  • [Presentation] ベントナイト中のCl-イオンの拡散挙動に及ぼすFe(III)型化の影響2012

    • Author(s)
      鶴田祐士, 渡辺直子, 小崎完
    • Organizer
      日本原子力学会 北海道支部 第30回研究発表会
    • Place of Presentation
      北大
    • Year and Date
      2012-12-25
    • Related Report
      2013 Final Research Report
  • [Presentation] ベントナイト中のCl-イオンの拡散挙動に及ぼすFe(III)型化の影響2012

    • Author(s)
      鶴田祐士
    • Organizer
      日本原子力学会 北海道支部 第30回研究発表会
    • Place of Presentation
      北海道大学(札幌市)
    • Related Report
      2012 Research-status Report
  • [Presentation] 地層処分緩衝材中の塩化物イオンの拡散挙動に及ぼすFe(III)型化の影響2011

    • Author(s)
      鶴田祐士, 山崎大貴, 宮坂直行, 小崎完, 佐藤正知, 香西直文, 佐藤隆博
    • Organizer
      第6回高崎量子応用研究シンポジウム
    • Place of Presentation
      高崎市市民ギャラリー(高崎市)
    • Year and Date
      2011-10-14
    • Related Report
      2013 Final Research Report
  • [Presentation] Diffusion Behavior of Cl^- Ions in Bentonite : Effect of Alteration of Bentonite into Fe(III)-type2011

    • Author(s)
      Y. TSURUTA, T. KOZAKI, S. SATO
    • Organizer
      13th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2011)
    • Place of Presentation
      Beijing (China)
    • Year and Date
      2011-09-18
    • Related Report
      2013 Final Research Report
  • [Presentation] DIFFUSION BEHAVIOR OF Cl- IONS IN BENTONITE: EFFECT OF ALTERATION OF BENTONITE INTO Fe(III)-TYPE2011

    • Author(s)
      Yuji TSURUTA, Tamotsu KOZAKI, Seichi SATO
    • Organizer
      13th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2011)
    • Place of Presentation
      北京大学、中国
    • Related Report
      2011 Research-status Report
  • [Presentation] 地層処分緩衝材中の塩化物イオンの拡散挙動に及ぼすFe(III)型化の影響2011

    • Author(s)
      鶴田祐士、山崎大貴、宮坂直行、小崎完、佐藤正知、香西直文、佐藤隆博
    • Organizer
      第6回高崎量子応用研究シンポジウム
    • Place of Presentation
      高崎シティギャラリー、高崎
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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