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Medium-Temperature Phosphate Glass Composite Material as a Matrix for the Immobilization of High-Level Waste Containing Volatile Radionuclides

Author

Listed:
  • Anna V. Frolova

    (Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, 19 Kosygin St., 119991 Moscow, Russia)

  • Sergey E. Vinokurov

    (Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, 19 Kosygin St., 119991 Moscow, Russia)

  • Irina N. Gromyak

    (Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, 19 Kosygin St., 119991 Moscow, Russia)

  • Sergey S. Danilov

    (Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, 19 Kosygin St., 119991 Moscow, Russia)

Abstract

The search for matrices and technological solutions for the reliable immobilization of volatile radionuclides and high-level waste (HLW) components is an actual radiochemical problem. Methods of obtaining of sodium alumino-iron phosphate (NAFP) and iron phosphate (FP) glass composite materials synthesized at temperatures of 450–750 °C, their structure and hydrolytic stability were investigated in this paper. The structure of the samples was studied by XRD and SEM-EDS. It was shown that, in the case of FP materials, the phase composition varies depending on the synthesis temperature, while NAFP materials have a complex multiphase composition at all crystallization temperatures. It has been established that the samples of the obtained glass composite materials have a high hydrolytic stability. At the same time, FP material obtained at 650 °C are the most stable, which makes this medium-temperature method of synthesis promising for the immobilization of volatile HLW components.

Suggested Citation

  • Anna V. Frolova & Sergey E. Vinokurov & Irina N. Gromyak & Sergey S. Danilov, 2022. "Medium-Temperature Phosphate Glass Composite Material as a Matrix for the Immobilization of High-Level Waste Containing Volatile Radionuclides," Energies, MDPI, vol. 15(20), pages 1-12, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7506-:d:939996
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    References listed on IDEAS

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    1. Michael I. Ojovan & Vladislav A. Petrov & Sergey V. Yudintsev, 2021. "Glass Crystalline Materials as Advanced Nuclear Wasteforms," Sustainability, MDPI, vol. 13(8), pages 1-11, April.
    2. Svetlana A. Kulikova & Kseniya Yu. Belova & Ekaterina A. Tyupina & Sergey E. Vinokurov, 2020. "Conditioning of Spent Electrolyte Surrogate LiCl-KCl-CsCl Using Magnesium Potassium Phosphate Compound," Energies, MDPI, vol. 13(8), pages 1-11, April.
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    Cited by:

    1. Esther Phillip & Thye Foo Choo & Nurul Wahida Ahmad Khairuddin & Rehab O. Abdel Rahman, 2023. "On the Sustainable Utilization of Geopolymers for Safe Management of Radioactive Waste: A Review," Sustainability, MDPI, vol. 15(2), pages 1-30, January.

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