Study on migration behavior of ions bentonite under electrical potential gradient

• Project/Area Number: 19360430
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Kyushu University
• Principal Investigator: IDEMITSU Kazuya Kyushu University, 大学院・工学研究院, 教授 (10221079)
• Co-Investigator(Kenkyū-buntansha): INAGAKI Yaohiro 九州大学, 大学院・工学研究院, 准教授 (80203199) ; ARIMA Tatsumi 九州大学, 大学院・工学研究院, 助教 (60264090)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2009: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2008: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2007: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
• Keywords: 放射性廃棄物 / ベントナイト粘土 / 還元環境 / 鉄イオン / みかけの拡散係数 / 分散係数 / 間隙水pH / アルカリ土類金属

Research Abstract

Migration behavior of ions in bentonite is important for safety assessment of radioactive wastes disposal. However it is difficult to carry out migration experiments under reducing condition like real deep geological disposal. Moreover there are some ions which migrate very slowly in bentonite. Thus a special method is needed to obtain migration parameters within reasonable time and appropriate condition. The proposer has developed the electromigration method to obtain migration parameters of ions in bentonite by acceleration of ions. This method can provide stable reducing condition in bentonite. By using this method we obtained diffusion coefficients and dispersion coefficients of ferrous ion, alkali ions and alkali earth ions under the reducing condition.

Research Products

• [Journal Article] Migration Behavior of Plutonium in Compacted Bentonite Under Reducing Conditions Controlled with Potentioatat (2009)
  • Author(s): K. Idemitsu
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXII 1124 Pages: 283-288
  • Peer Reviewed
• [Journal Article] Migration Behavior of Potassium and Rubidium in Compacted Bentonite Under Reducing Condition with Iron Corrosion Product (2009)
  • Author(s): K. Idemitsu
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXIII 1193 Pages: 453-460
  • Peer Reviewed
• [Journal Article] Migration Behavior of Plutonium in Compacted Bentonite Under Reducing Conditions Controlled with Potentioatat (2009)
  • Author(s): K. Idemitsu, et al.
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXII 1124 Pages: 283-288
  • Peer Reviewed
• [Journal Article] Migration Behavior of Potassium and Rubidium in Compacted Bentonite Under Reducing Condition with Iron Corrosion Product (2009)
  • Author(s): K. Idemitsu, et al.
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXIII 1124 Pages: 453-460
  • Peer Reviewed
• [Journal Article] Migration Behavior of Ferrous Ion in Compacted Bentonite under Reducing Conditions Controlled with Potentiostat (2008)
  • Author(s): K. Idemitsu
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXI 1107 Pages: 501-508
  • Peer Reviewed
• [Journal Article] Migration Behavior of Ferrous Ion in Compacted Bentonite under Reducing Conditions Controlled with Potentiostat (2008)
  • Author(s): K. Idemitsu, et al.
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXI 1107 Pages: 501-508
  • Peer Reviewed
• [Journal Article] Migration Behavior of Plutonium in Compacted Bentonite Under Reducing Condition using Electromigration (2007)
  • Author(s): K. Idemitsu
  • Journal Title: Proc. Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXX 985 Pages: 443-448
  • Peer Reviewed
• [Journal Article] Migration Behavior of Plutonium in Compacted Bentonite Under Reducing Condition using Electromigration (2007)
  • Author(s): K. Idemitsu, et. al.
  • Journal Title: Proc.Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXX 985 Pages: 443-448
  • Peer Reviewed
• [Presentation] Migration Behavior of Alkali Earth Ions in Compacted Bentonite with Iron Corrosion Product Using Electrochemical Method (2010)
  • Author(s): K. Idemitsu
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXIV
  • Place of Presentation: 米国サンフランシスコ市
  • Year and Date: 2010-04-07
• [Presentation] 電位勾配下におけるベントナイト中のアルカリ金属の移行挙動 (2009)
  • Author(s): 秋山大輔
  • Organizer: 日本原子力学会2009秋の大会
  • Place of Presentation: 仙台市
  • Year and Date: 2009-09-17
• [Presentation] 電位勾配下におけるベントナイト中のアルカリ金属の移行挙動 (2009)
  • Author(s): 秋山大輔
  • Organizer: 日本原子力学会2009秋の大会
  • Place of Presentation: 東北大学
  • Year and Date: 2009-09-17
• [Presentation] Migration Behavior of Potassium and Rubidium in Compacted Bentonite Under Reducing Condition with Iron Corrosion Product (2009)
  • Author(s): K. Idemitsu
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXIII
  • Place of Presentation: ロシアサンクトペテルブルグ市
  • Year and Date: 2009-05-26
• [Presentation] Migration Behavior of Potassium and Rubidium in Compacted Bentonite Under Reducing Condition with Iron Corrosion Product (2009)
  • Author(s): Kazuya Idemitsu
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXIII
  • Place of Presentation: ロシア、サンクトペテルブルク市
  • Year and Date: 2009-05-26
• [Presentation] Migration Behavior of Plutoniu m in Compacted Bentonite Under Reducing Conditions Controlled with Potentiostat (2008)
  • Author(s): K. Idemitsu
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXII
  • Place of Presentation: 米国ボストン市
  • Year and Date: 2008-12-03
• [Presentation] Migration Behavior of Plutonium in Compacted Bentonite Under Reducing Conditions Controlled with Potentiostat (2008)
  • Author(s): K. Idemitsu, et al.
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXII
  • Place of Presentation: 米国、ボストン市
  • Year and Date: 2008-12-03
• [Presentation] 電位勾配下における圧縮ベントナイト中のセシウムの移行挙動 (2008)
  • Author(s): 池内宏知
  • Organizer: 日本原子力学会2008年秋の大会
  • Place of Presentation: 高知市
  • Year and Date: 2008-09-06
• [Presentation] 電位勾配下における圧縮ベントナイト中のセシウムの移行挙動 (2008)
  • Author(s): 池内 宏知, 他
  • Organizer: 日本原子力学会2008年秋の大会
  • Place of Presentation: 高知県、高知工科大学
  • Year and Date: 2008-09-06
• [Presentation] 電位勾配下における緩衝材中のプルトニウムの移行挙動 (2008)
  • Author(s): 池内宏知
  • Organizer: 日本原子力学会2008年春の年会
  • Place of Presentation: 大阪市
  • Year and Date: 2008-03-26
• [Presentation] Experimental Study on the pH of Porewater in Compacted Bentonite under Reducing Conditions Using Electromigration (2008)
  • Author(s): N.S. Afsarun
  • Organizer: Waste Management 2008
  • Place of Presentation: 米国フェニックス市
  • Year and Date: 2008-02-25
• [Presentation] Experimental Study on the pH of Porewater in Compacted Bentonite under Reducing Conditions Using Electromigration (2008)
  • Author(s): N. S. Afsarun, et. al.
  • Organizer: Waste Management 2008
  • Place of Presentation: 米国、フェニックス市
  • Year and Date: 2008-02-25
• [Presentation] Study on the pH of the Pore Water in Compacted Bentonite under Reducing Environment (2007)
  • Author(s): N.S. Afsarun
  • Organizer: 日本原子力学会2007年秋の大会
  • Place of Presentation: 北九州市
  • Year and Date: 2007-09-28
• [Presentation] 低電位配下における圧縮ベントナイト中の鉄の移動挙動 (2007)
  • Author(s): 山崎秀
  • Organizer: 日本原子力学会2007年秋の大会
  • Place of Presentation: 北九州市
  • Year and Date: 2007-09-28
• [Presentation] Study on the pH of the Pore Water in Compacted Bentonite under Reducing Environment (2007)
  • Author(s): N. S. Afsarun, et. al.
  • Organizer: 日本原子力学会2007年秋の大会
  • Place of Presentation: 北九州市小倉
  • Year and Date: 2007-09-28
• [Presentation] 低電位配下における圧縮ベントナイト中の鉄の移動挙動 (2007)
  • Author(s): 山崎 秀, 他
  • Organizer: 日本原子力学会2007年秋の大会
  • Place of Presentation: 北九州市小倉
  • Year and Date: 2007-09-28
• [Presentation] Migration Behavior of Ferrous Ion in Compacted Bentonite under Reduci ng Conditions Controlled with Potentiostat (2007)
  • Author(s): K. Idemitsu
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Manage ment XXXI
  • Place of Presentation: 英国シェフィールド市
  • Year and Date: 2007-09-19
• [Presentation] Migration Behavior of Ferrous Ion in Compacted Bentonite under Reducing Conditions Controlled with Potentiostat (2007)
  • Author(s): K. Idemitsu, et. al.
  • Organizer: Materials Research Society Symposium on Scientific Basis for Nuclear Waste Management XXXI
  • Place of Presentation: 英国、シェフィールド市
  • Year and Date: 2007-09-19