Non-hydrothermal fabricated sodalite microspheres (GXU-SODs) for integrated adsorption and lattice immobilization of radioactive Cs+ and Sr2+ (IMAGE)

Tsinghua University Press

Non-hydrothermal fabricated sodalite microspheres (GXU-SODs) for integrated adsorption and lattice immobilization of radioactive Cs+ and Sr2+

Caption

The GXU-SODs are prepared via a non-hydrothermal geopolymer oil-drop method, which can efficiently capture Sr2+ and Cs+ through ion exchange and chemisorption. After calcination at 1100 °C, the adsorbed radionuclides are embedded into the crystal lattice of nepheline and pollucite phases. The normalized leaching rates of Sr2+ and Cs+ meet the safety standard of radioactive waste disposal, achieving permanent immobilization.

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Journal of Advanced Ceramics, Tsinghua University Press

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