A New technique for removing radioactive nuclides from aqueous solution by coprecipitation with barite

Tokunaga, Kohei ; Takahashi, Yoshio*; Kozai, Naofumi

In the present study, we explore a new application of barite (BaSO $_{4}$ ) as a sequestering phase for radioactive nuclides from aqueous solutions. Barite is a common phase in many geological environments, and it can be used to remove toxic and/or radioactive elements from aqueous solutions, but it has not been widely used in environmental studies. This study describes the mechanisms of SeO $_{3}$ $^{2-}$ , SeO $_{4}$ $^{2-}$ , IO $_{3}$ $^{-}$ , and Sr $_{2}$ $^{+}$ distribution between barite and water, thus providing a good estimate of its ability to effectively remove these ions from aqueous solutions (more than 80%) using the optimized experimental parameters examined here.

Language	:	Japanese
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Meeting title	:	2018年度日本地球化学会第65回年会
Held date	:	2018/09
Location (city)	:	西原
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. : BB20180857
JAEA Abstracts No. :
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