Thermal degradation and vitrification properties of MA adsorbents

Kofuji, Hirohide ; Watanabe, So ; Goto, Ichiro; Oriuchi, Akio; Takeuchi, Masayuki ; Kobayashi, Hidekazu ; Sasage, Kenichi

Vitrification procedure for extraction chromatography using porous silica particles covered with extractant was investigated. In this method, minor actinides (MAs) were separated from high-level radioactive liquid waste by extractant CMPO and/or HDEHP. In this study, thermal degradation behavior and vitrification properties were evaluated from the viewpoints of high-level wasteform properties using porous silica adsorbent impregnated with extractant CMPO and HDEHP. As the results of various experiments, suitable vitrification procedure for MA/RE adsorbents was clarified and selected adsorbent was generally well-vitrified and had enough chemical durability.

Language	:	English
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Meeting title	:	International Nuclear Fuel Cycle Conference (GLOBAL 2017)
Held date	:	2017/09
Location (city)	:	Seoul
Location (country)	:	Korea
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Keywords	:	Extraction chromatography; minor actinide; vitrification
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Article of JAEA R&D Review	:
Cooperating Institute	:	資源エネルギー庁

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Registration No. : BB20170417
JAEA Abstracts No. :
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