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Sorption of Cesium from Alkaline Solutions onto Resorcinol-Formaldehyde Sorbents

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Abstract

The performance of various phenolic ion exchangers in 137Cs sorption was studied. Resorcinol-formaldehyde sorbents (RFSs) produced by Axion—Rare and Noble Metals Joint-Stock Company (Russia) of the AXIONIT RCs grade exhibit the best sorption parameters. Ion-exchange materials based on RFSs efficiently take up 137Cs from solutions with pH > 10 in the presence of prevalent amounts of Na+ and K+ ions. Sorbents of AXIONIT RCs grade can be used in repeated sorption-desorption-regeneration cycles. Complete desorption of 137Cs is reached on passing 5–10 column volumes of 0.5–1.0 M HNO3 solutions. The possibility of using RFSs for 137Cs removal from model solutions simulating NPP bottom residues and for treatment of real liquid high-level waste, clarified phase from HLW storage tanks of the Radiochemical Plant of the Mayak Production Association, to remove cesium radionuclides was demonstrated.

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Correspondence to V. V. Milyutin.

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Russian Text © The Author(s), 2019, published in Radiokhimiya, 2019, Vol. 61, No. 6, pp. 507–511.

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Milyutin, V.V., Zelenin, P.G., Kozlov, P.V. et al. Sorption of Cesium from Alkaline Solutions onto Resorcinol-Formaldehyde Sorbents. Radiochemistry 61, 714–718 (2019). https://doi.org/10.1134/S1066362219060122

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  • DOI: https://doi.org/10.1134/S1066362219060122

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