Immobilization process of selenate in cancrinite by hydrothermal method

Niko Dian Pahlevi, Binglin Guo, Tsuyoshi Hirajima, Keiko Sasaki

研究成果: 会議への寄与タイプ論文

抄録

Anionic radionuclides are known to be hardly immobilized in most minerals and in addition they possess quite long half-life in the order of 10 5 ~10 7 years. In Fukushima Daiichi Nuclear Power Plant (FDNPP) anion exchange resin is utilized to immobilize these oxo-anions like selenate ( 79 SeO 4 2- )/selenite ( 79 SeO 3 2- ) in Advanced Liquid Processing System. However, resins are not always suitable to store underground for long years, due to high biodegradability. The technologies for stable storage of anionic radionuclides are strongly desired to develop before decommissioning of the FDNPP reactor. It has been known that hydrocalumite and ettringite are typical anionic exchangers for selenite. However, these matrixes have low chemical stability under low pH conditions. In this study, cancrinite and sodalite were proposed as selenate matrixes, where both matrixes are stable in the wider range of pH.

元の言語英語
出版物ステータス出版済み - 1 1 2017
イベント14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017 - Sapporo, Hokkaido, 日本
継続期間: 9 26 20179 29 2017

会議

会議14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017
日本
Sapporo, Hokkaido
期間9/26/179/29/17

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cancrinite
selenate
immobilization
selenite
nuclear power plant
matrix
radionuclide
resin
sodalite
decommissioning
half life
anion
ion exchange
liquid
mineral
method

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

これを引用

Pahlevi, N. D., Guo, B., Hirajima, T., & Sasaki, K. (2017). Immobilization process of selenate in cancrinite by hydrothermal method. 論文発表場所 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, 日本.

Immobilization process of selenate in cancrinite by hydrothermal method. / Pahlevi, Niko Dian; Guo, Binglin; Hirajima, Tsuyoshi; Sasaki, Keiko.

2017. 論文発表場所 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, 日本.

研究成果: 会議への寄与タイプ論文

Pahlevi, ND, Guo, B, Hirajima, T & Sasaki, K 2017, 'Immobilization process of selenate in cancrinite by hydrothermal method' 論文発表場所 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, 日本, 9/26/17 - 9/29/17, .
Pahlevi ND, Guo B, Hirajima T, Sasaki K. Immobilization process of selenate in cancrinite by hydrothermal method. 2017. 論文発表場所 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, 日本.
Pahlevi, Niko Dian ; Guo, Binglin ; Hirajima, Tsuyoshi ; Sasaki, Keiko. / Immobilization process of selenate in cancrinite by hydrothermal method. 論文発表場所 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, 日本.
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