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Natural Clay Minerals as a Starting Material for Matrices for the Immobilization of Radioactive Waste from Pyrochemical Processing of SNF

Author

Listed:
  • Anna V. Matveenko

    (Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia)

  • Andrey P. Varlakov

    (JSC “A.A. Bochvar High-Technology Scientific Research Institute for Inorganic Materials (VNIINM)”, 123098 Moscow, Russia)

  • Alexander A. Zherebtsov

    (JSC “Proryv”, 107140 Moscow, Russia)

  • Alexander V. Germanov

    (JSC “A.A. Bochvar High-Technology Scientific Research Institute for Inorganic Materials (VNIINM)”, 123098 Moscow, Russia)

  • Ivan V. Mikheev

    (Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia)

  • Stepan N. Kalmykov

    (Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia)

  • Vladimir G. Petrov

    (Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia)

Abstract

Pyrochemistry is a promising technology that can provide benefits for the safe reprocessing of relatively fresh spent nuclear fuel with a short storage time (3–5 years). The radioactive waste emanating from this process is an electrolyte (LiCl–KCl) mixture with fission products included. Such wastes are rarely immobilized through common matrices such as cement and glass. In this study, samples of ceramic materials, based on natural bentonite clay, were studied as matrices for radioactive waste in the form of LiCl–KCl eutectic. The phase composition of the samples, and their mechanical, hydrolytic, and radiation resistance were characterized. The possibility of using bentonite clay as a material for immobilizing high-level waste arising from pyrochemical processing of spent nuclear fuel is further discussed in this paper.

Suggested Citation

  • Anna V. Matveenko & Andrey P. Varlakov & Alexander A. Zherebtsov & Alexander V. Germanov & Ivan V. Mikheev & Stepan N. Kalmykov & Vladimir G. Petrov, 2021. "Natural Clay Minerals as a Starting Material for Matrices for the Immobilization of Radioactive Waste from Pyrochemical Processing of SNF," Sustainability, MDPI, vol. 13(19), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:19:p:10780-:d:645282
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    Cited by:

    1. Ratiko Ratiko & Raden Sumarbagiono & Aisyah Aisyah & Wati Wati & Kuat Heriyanto & Mirawaty Mirawaty & Pungky Ayu Artiani & Yuli Purwanto & Dwi Luhur Ibnu Saputra & Jaka Rachmadetin & Risdiyana Setiawa, 2022. "Theoretical and Experimental Analysis on Influence of Natural Airflow on Spent Fuel Heat Removal in Dry Cask Storage," Sustainability, MDPI, vol. 14(3), pages 1-15, February.

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