The results of research on the most effective conditions for removing cesium from soil are presented. The effect of the type and concentration of reagent as well as the duration of treatment (leaching) and temperature on the degree of decontamination is studied. It is shown that autoclave leaching with temperature raised to 160°C to decontaminate 137Cs contaminated soil is effective. The process conditions for 99% decontamination are determined. Combining reagent treatment under the conditions chosen and hydro-separation removal of the sludge fraction makes it possible to reach a decontamination coefficient of 230 with 10-fold smaller radwaste volume.
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References
L. B. Prozorov, M. Yu. Shcheglov, V. B. Nikolaevsky, et al., “Development of the technology for reagent decontamination of soil,” in: Abstr. 11th Int. Ecological Symposium on the Atomic Urals and Industrial Urals, Ekaterinburg (2005), pp. 96–97.
S. A. Dmitriev, V. B. Nikolaevsky, L. B. Prozorov, and M. Yu. Shcheglov, RU Patent 2274915 C1, IPC G21F9/28, “Method of removing cesium radionuclides from soil,” Byull. Izobr., Polez. Modeli, No. 11, Pt. 2, 525 (2006).
D. E. Chirkst, K. N. Chaliyan, and A. G. Chaliyan, “Decontamination of soil contaminated with cesium radionuclides as a result of the Chernobyl accident,” Radiokhimiya, 36, No. 5, 462–465 (1994).
L. B. Prozorov, N. I. Komarova, and T. V. Molchanova, “Use of ammonium fluoride for acid decontamination of soil contaminated with 137Cs,” Radiokhimiya, 44, No. 5, 470–474 (2002).
S. A. Dmitriev, A. S. Barinov, and V. M. Kutsov, “Staged decontamination of sandy soil contaminated with 137Cs,” At. Énerg., 111, No.1, 29–33 (2011).
E. G. Chapovskii, Laboratory Works in Soil Science and Soil Mechanics, Nedra, Moscow (1975).
Basic Sanitation Regulations for Securing Radiation Safety (OSPORB 99/2010). Sanitation Regulations and Standards, Federal Center for Hygiene and Epidemiology, Rospotrebnadzor, Moscow (2010).
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Translated from Atomnaya Énergiya, Vol. 114, No. 1, pp. 39–43, January, 2013.
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Nikolaevsky, V.B., Lifanov, F.A. & Batusov, S.S. Improving the Decontamination of 137Cs Contaminated Soil. At Energy 114, 51–55 (2013). https://doi.org/10.1007/s10512-013-9669-z
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DOI: https://doi.org/10.1007/s10512-013-9669-z