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実高レベル放射性廃棄物ガラスを用いた浸出試験

Studies on aqueous corrosion of HLW glass

藤原 健壮 ; 小田倉 誠美 ; 黒羽 光彦; 小原 幸利*; 菊地 博*

Fujiwara, Kenso; Odakura, Makoto; Kuroha, Mitsuhiko; Kohara, Yukitoshi*; Kikuchi, Hiroshi*

ガラス固化体の鉱物化と核種浸出の反応機構を明らかにすることを目的とし、実高レベル放射性廃棄物ガラスを用いた浸出試験を高温(90, 120度)高アルカリ(pH11, 12, 13)条件で行った。B, Si及びCsの浸出挙動から、模擬ガラスの場合と同様に二次鉱物が生成し、Csの多くはこの鉱物に取り込まれていると考えられた。

The purpose of this study is to alteration-phase formation and associated elemental release furing aqueous corrosion of high-level waste(HLW) glass. Static corrosion tests were formed at high temperature (90, 120 degrees) alkali (pH 11, 12, 13) condition. Crystalline alteration-phase formed in the corroded glass were made. Most of Cs in the glass is retained in the alteration-phases into amorphous phases and pollucite.

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