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Influence of Rock Structure on Migration of Radioactive Colloids from an Underground Repository of High-Level Radioactive Waste

Author

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  • Victor I. Malkovsky

    (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry Russian Academy of Sciences, Staromonetny Lane, 35, 119017 Moscow, Russia)

  • Vladislav A. Petrov

    (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry Russian Academy of Sciences, Staromonetny Lane, 35, 119017 Moscow, Russia)

  • Sergey V. Yudintsev

    (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry Russian Academy of Sciences, Staromonetny Lane, 35, 119017 Moscow, Russia)

  • Michael I. Ojovan

    (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry Russian Academy of Sciences, Staromonetny Lane, 35, 119017 Moscow, Russia)

  • Valeri V. Poluektov

    (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry Russian Academy of Sciences, Staromonetny Lane, 35, 119017 Moscow, Russia)

Abstract

Studies of leaching of vitrified simulated high-level radioactive waste (HLW) evidence that most of actinides or their simulators enter leaching water in a colloidal form. In this paper, we consider a mechanism of colloid-facilitated migration of radionuclides from an underground repository of HLW located at a depth of a few hundreds of meters in fractured crystalline rocks. The comparison between data of field and laboratory measurements showed that the bulk permeability of the rock massif in field tests is much greater than the permeability of rock samples in laboratory experiments due to an influence of a network of fractures in the rock massif. Our theoretical analysis presents evidence that this difference can take place even in a case when the network is not continuous, and the fractures are isolated with each other through a porous low-permeable matrix of the rock. Results of modelling revealed a possibility of mechanical retention of radionuclide-bearing colloid particles in the frame of rock during their underground migration.

Suggested Citation

  • Victor I. Malkovsky & Vladislav A. Petrov & Sergey V. Yudintsev & Michael I. Ojovan & Valeri V. Poluektov, 2023. "Influence of Rock Structure on Migration of Radioactive Colloids from an Underground Repository of High-Level Radioactive Waste," Sustainability, MDPI, vol. 15(1), pages 1-10, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:1:p:882-:d:1024167
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    References listed on IDEAS

    as
    1. A. B. Kersting & D. W. Efurd & D. L. Finnegan & D. J. Rokop & D. K. Smith & J. L. Thompson, 1999. "Migration of plutonium in ground water at the Nevada Test Site," Nature, Nature, vol. 397(6714), pages 56-59, January.
    2. 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.
    3. Bruce D. Honeyman, 1999. "Colloidal culprits in contamination," Nature, Nature, vol. 397(6714), pages 23-24, January.
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