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Chemical durability of iron-phosphate glass as the high level waste from pyrochemical reprocessing

乾式再処理起源の高レベル廃棄物媒体としての鉄リン酸塩ガラスの化学的安定性

小藤 博英  ; 矢野 哲司*; 明珍 宗孝; 松山 加苗*; 沖田 壮史*; 宮本 真哉*

Kofuji, Hirohide; Yano, Tetsuji*; Myochin, Munetaka; Matsuyama, Kanae*; Okita, Takeshi*; Miyamoto, Shinya*

先進的核燃料サイクルシステムから発生する廃棄物に適合する処分概念研究開発の一環として、乾式再処理プロセスから生じる高レベル廃棄物の固化媒体としての鉄リン酸塩ガラスの性能評価を行っている。ガラス中への廃棄物元素の高充填や化学的安定性の向上のためのガラス組成の最適化実験を行った結果を取りまとめた。

As a part of the research and development for the nuclear waste disposal concept suitable to the advanced fuel cycle systems and its performance evaluation, the iron-phosphate glass is examined as an alternative waste form for high level waste generated from pyrochemical reprocessing. In order to enhance the waste element content in the glass matrix and improve the durability of the waste form, optimization experiments of glass composition were carried out and the effect of additional other transition metal oxides was found out in this study.

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