The synthesis of ceramic matrices, based on zirconium-enriched pyrochlore for the immobilization of high-level waste (HLW), by means of self-propagating high-temperature synthesis (SHS) under the pressure of argon and compressed air in a SHS-reactor was investigated. The dependences of the phase composition and characteristics of the crystalline phases of the material on the gas pressure were determined. It is shown that all rare-earth elements (REE) (Ce4+, La3+) from the model mixture of the HLW are incorporated into the structure of the ceramic. It is established based on evidence derived from elemental analysis that lanthanides are concentrated in the perovskite and pyrochlore structures.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. V. Baluev, B. Ya. Galkin, V. S. Mityakhina, and V. K. Isupov, “Waste from the processing of nuclear materials and matrix substances for their immobilization: analytical review,” Radiokhimiya, 42(4), 295 – 307 (2000).
A. I. Sobolev, S. A. Dmitriev, A. S. Barinov, et al., “Handling of radioactive wastes formed outside the nuclear fuel cycle,” Atomic Energy, 79(6), 840 – 844 (1995).
S. A. Dmitriev and S. V. Stefanovskii, Radioactive Waste Management [in Russian], Izd. Tsentr RKhTU im. D. I. Mendeleeva, Moscow (2000).
Ian W. Donald, Waste Immobilization in Glass and Ceramic Based Hosts: Radioactive, Toxic and Hazardous, Wiley, Chichester (2010).
E. M. Glagovskii, S. V. Yudintsev, A. V. Kuprin, et al., “Study of crystal matrices of actinides obtained by self-propagating high-temperature synthesis,” Radiokhimiya, 43(6), 557 – 562 (2001).
S. V. Yudintsev, Complex Oxides of Structural Types of Pyrochlore, Garnet and Murataite – Matrices for Immobilizing Actinide Wastes of Nuclear Energy, Author’s Abstract of Doctoral’s Thesis [in Russian], IGEM, Moscow (2009).
N. P. Laverov, S. V. Yudintsev, T. S. Livshits, et al., “Synthetic minerals with the pyrochlore and garnet structures for immobilization of actinide-containing wastes,” Geochemistry Int., 48(1), 1 – 14 (2010).
E. E. Konovalov, A. I. Lastov, and N. A. Nerozin, “On the question of immobilization of high-level waste into a cermet matrix based on a Y-Al garnet in the SVS regime,” Izv. Vyssh. Ucheb. Zaved., Yad. Énergetika, No. 1, 111 – 117 (2015).
A. S. Mironov, S. V. Chizhevskaya, and S. V. Stefanovskii, “RZE-substituted zirconolite – a promising matrix for the immobilization of HLW,” Usp. Khimii Khim. Tekhnol.: Sb. Nauch. Tr., 17(11), 6 – 12 (2003).
K. Podbolotov and T. Barinova, “Synthesis of mineral matrices based on enriched by zirconium pyrochlore for immobilize actinide-containing waste,” in: Advances in Materials Science for Environmental and Energy Technologies IV: Ceramic Transactions (2015), Vol. 253, pp. 73 – 82.
K. B. Podbolotov and T. V. Barinova, “Synthesis of ceramics with pyrochlore structure for immobilization of actinide-containing wastes,” Vest. Nats. Akad. Navuk Belarusi, Ser. Khim. Navuk, No. 2, 110 – 115 (2016).
T. V. Barinova, I. P. Borovinskaya, V. I. Ratnikov, et al., “Self-propagating high-temperature synthesis of ceramic matrices for immobilization of actinide-containing wastes,” Radiokhimiya, 56(5), 554 – 559 (2014).
G. V. Belov, Thermodynamic Modeling: Methods, Algorithms, Programs [in Russian], Nauchnyi Mir, Moscow (2002).
This work was financed by the Belarusian Republic Foundation for Basic Research (project No. T16R-055) and the Russian Foundation for Basic Research (projects No. 15-33-50736 and No. 16-53-00084).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Steklo i Keramika, No. 11, pp. 40 – 45, November, 2018.
Rights and permissions
About this article
Cite this article
Podbolotov, K.B., Barinova, T.V. Effect of the Synthesis Atmosphere on the Process of Formation of Pyrochlore Matrices for HLW Immobilization. Glass Ceram 75, 451–456 (2019). https://doi.org/10.1007/s10717-019-00110-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10717-019-00110-9