IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i17p6477-d906928.html
   My bibliography  Save this article

Behavior of Glass-like and Mineral-like Phosphate Compounds with an Immobilized Chloride Mixture in Hydrogen Peroxide Solutions

Author

Listed:
  • Anna V. Frolova

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

  • Svetlana A. Kulikova

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

  • Kseniya Y. Belova

    (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)

  • Sergey E. Vinokurov

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

Abstract

A new type of high-level waste (HLW) is generated during pyrochemical reprocessing of mixed nitride spent uranium–plutonium nuclear fuel. Such waste is a spent electrolyte, which is a mixture of chloride salts containing approximately 25.7 wt.% LiCl + 31.6 wt.% KCl + 4.1 wt.% CsCl + 5.1 wt.% BaCl 2 + 3.8 wt.% SrCl 2 + 29.7 wt.% LaCl 3 , and its immobilization in reliable matrices is an actual radiochemical problem. The structure and hydrolytic stability of sodium aluminoironphosphate (NAFP) glass and a low-temperature mineral-like magnesium potassium phosphate (MPP) matrix, which are promising for spent electrolyte immobilization in the presence of hydrogen peroxide solutions simulating natural water radiolysis products, were studied in this work. The structure of the samples was studied using the SEM-EDS method. It was shown that the initial samples of NAFP glass after leaching in hydrogen peroxide solutions are prone to precipitation of crystalline phases on the surface, which are mainly represented by a mixture of sodium–iron–aluminum pyrophosphates. It was established that the leaching rate of structure-forming components of NAFP and MPP matrices generally increase, but remain at a low level, meeting modern requirements for HLW immobilization. This confirms the effectiveness of the studied matrices for the industrial use of the spent electrolyte.

Suggested Citation

  • Anna V. Frolova & Svetlana A. Kulikova & Kseniya Y. Belova & Sergey S. Danilov & Sergey E. Vinokurov, 2022. "Behavior of Glass-like and Mineral-like Phosphate Compounds with an Immobilized Chloride Mixture in Hydrogen Peroxide Solutions," Energies, MDPI, vol. 15(17), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6477-:d:906928
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/17/6477/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/17/6477/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    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.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. 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.
    2. Svetlana A. Kulikova & Sergey S. Danilov & Kseniya Yu. Belova & Anastasiya A. Rodionova & Sergey E. Vinokurov, 2020. "Optimization of the Solidification Method of High-Level Waste for Increasing the Thermal Stability of the Magnesium Potassium Phosphate Compound," Energies, MDPI, vol. 13(15), pages 1-15, July.
    3. Bella Zubekhina & Boris Burakov & Andrei Shiryaev & Xiaodong Liu & Yury Petrov, 2023. "Long-Term Chemical Alteration of 238 Pu-Doped Borosilicate Glass in a Simulated Geological Environment with Bentonite Buffer," Sustainability, MDPI, vol. 15(7), pages 1-12, April.
    4. Nailia Rakhimova, 2022. "Recent Advances in Alternative Cementitious Materials for Nuclear Waste Immobilization: A Review," Sustainability, MDPI, vol. 15(1), pages 1-25, December.
    5. 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.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6477-:d:906928. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.