High-temperature gas-solid interaction of calcium silicate insulation with cesium hydroxide

Rizaal, M. ; Nakajima, Kunihisa ; Osaka, Masahiko ; Saito, Takumi*; Okamoto, Koji*

Here we report an experimental study to investigate cesium retention on calcium silicate insulation following the gas-solid chemical interaction at high temperature. This study used cesium hydroxide and was performed at 800 $^{circ}$ C under the oxidizing atmosphere. The experimental results showed that water-insoluble CsAlSiO $_{4}$ and dicalcium silicate/larnite (Ca $_{2}$ SiO $_{4}$ ) were formed, which evidences that the insulation material could retain Cs in a stable form.

Language	:	English
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Meeting title	:	日本原子力学会2020年秋の大会
Held date	:	2020/09
Location (city)	:	福岡(online)
Location (country)	:	日本
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Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
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Registration No. : BB20200333
JAEA Abstracts No. :
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