Corrosion Behavior of a Powdered Simulated Nuclear Waste Glass in the Presence of Bentonite.

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概要

• 論文の詳細を見る

• Static corrosion tests of a powdered simulated waste glass were performed in deionized water with and without bentonite at 90°C for periods of up to 130 days. The glass irradiated with thermal neutron for activating Cs in the glass was used as a glass specimen in order to determine the sorption of Cs on bentonite. In the corrosion tests without bentonite, it was observed that normalized elemental mass loss (NL) values for soluble elements (B, Li, Na and Mo) were larger than those for Si by a factor of three and continued to increase after saturation of Si. In the corrosion tests in the presence of bentonite, it was observed that the glass corrosion was enhanced, and a large amount of Cs was sorbed on bentonite.<BR>The experimental results were analyzed by use of some corrosion models. The analysis showed that diffusion of the soluble elements is expected to be a dominant process for the glass corrosion, as well as the dissolution/precipitation reactions. In addition, it is expected that the glass corrosion in the presence of bentonite is largely affected by both ion-exchange equilibrium of the aqueous phase with Na-montmorillonite and precipitation of sepiolite from dissolution of dolomite.

• 一般社団法人 日本原子力学会の論文

著者

• Inagaki Yaohiro

  Department Of Applied Quantum Physics & Nuclear Engineering Kyushu University

• IDEMITSU Kazuya

  Department of Applied Quantum Physics & Nuclear Engineering, Kyushu University

• Takada Jitsuya

  Research Reaction Institute Kyoto University

• Furuya Hirotaka

  Department Of Applied Quantum Physics And Nuclear Engineering Division Of Engineering Graduate Schoo

• Nishikawa Sataro

  Research Reactor Institute Kyoto University

• YONEZAWA Shigeaki

  Department of Nuclear Engineering, Kyushu University

• INAGAKI Yaohiro

  Department of Nuclear Engineering, Kyushu University

• FURUYA Hirotaka

  Department of Nuclear Engineering, Kyushu University

• IDEMITSU Kazuya

  Department of Nuclear Engineering, Kyushu University

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