Abstract
Immobilization of 90Sr and 137Cs in geoceramic matrices synthesized on the basis of phosphatized calcinate of simulated radioactive wastes and apatite ore dressing tailings is studied. The samples were sintered at 950–1150°C for 1 h. Leaching tests were carried out at 90°C with double-distilled water in the quasiflow and accumulative modes. The leaching was monitored by the conductivity of the liquid phase. To estimate the leaching rates R, the Na, Cs, and Sr concentrations were measured by flame photometry. The best samples of geoceramics are characterized by R of (5–15) × 10−6 and <0.3 × 10−6 g cm−2 day−1 with respect to Cs and Sr, respectively. Aluminosilicophosphate geoceramics show promise as materials for immobilization of partitioned 90Sr and 137Cs radioactive wastes.
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Original Russian Text © R.V. Bogdanov, R.A. Kuznetsov, 2006, published in Radiokhimiya, 2006, Vol. 48, No. 2, pp. 185–192.
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Bogdanov, R.V., Kuznetsov, R.A. Aluminosilicophosphate geoceramics as matrices for the immobilization of partitioned 90Sr and 137Cs wastes. Radiochemistry 48, 204–211 (2006). https://doi.org/10.1134/S1066362206020202
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DOI: https://doi.org/10.1134/S1066362206020202