Redox decontamination technique development. (I). Selection for dissolutive and regenerative conditions.

• FUJITA Reiko

  Nuclear Engineering Laboratory, Toshiba Corp.

• ENDA Masami

  Nuclear Engineering Laboratory, Toshiba Corp.

• MORISUE Tetsuo

  Nuclear Engineering Laboratory, Toshiba Corp.

書誌事項

タイトル別名

• Selection for Dissolutive and Regenerative Conditions

抄録

The decontamination technique is required to have a high decontamination rate and decontamination factor, to apply to irregularly formed metallic waste, and minimize secondary waste volume for component replacement and decommissioning. The authors were developed a new decontamination technique using Ce⁴⁺ for decommissioning, which was named "REDOX decontamination technique". This paper has investigated decontamination conditions and regeneration conditions in a non-radioactive (namely cold) fundamental test. The decontamination conditions, namely dissolution conditions for stainless steel and carbon steel were selected using simulated samples in nitric acid solutions in varying Ce⁴⁺ concentrations, HNO3 concentration, temperatures, and linear flow rate of decontamination solutions. The regeneration conditions for decontamination reagent were selected in various electrode materials and varying electrode separation distance, anode area/cathode area ratio, current density, Ce³⁺ concentration, and HNO₃ concentration. The REDOX decontamination technique was ascertained to have a high dissolution rate and the decontamination reagent was ascertained to be regenerated effectively by electrolysis.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 26 (3), 339-349, 1989

  一般社団法人 日本原子力学会

キーワード

• REDOX process
• cerium
• chemical decontamination
• nitric acid
• decommissioning
• oxidizing reagents
• dissolution
• regeneration
• decontamination rate
• pH value
• temperature dependence

詳細情報

• CRID: 1390001204095496960
• NII論文ID: 130000826715
• DOI: 10.3327/jnst.26.339
• COI: 1:CAS:528:DyaL1MXit1Sqtrw%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可