Abstract
A composite sorbent based on spherically granulated chitosan modified with a mixed ferrocyanide K2Cu3[Fe(CN6)]2 (SGC-FC) was prepared. The sorbent is highly effective toward 137Cs. The physicochemical parameters of 137Cs+ sorption by this sorbent were determined: total and equilibrium static exchange capacity, dynamic exchange capacity, sorption equilibrium constants, etc. The influence of the chemical composition of the solution on the 137Cs+ sorption by SGC-FC was examined in detail. Based on the calculated value of the dimensionless Biot number Bi, a conclusion was made that the kinetics of 137Cs+ sorption on SGC-FC is mainly determined by external diffusion of 137Cs+ ions to reaction centers of the sorbent. The possibility of using the sorbent in monitoring of sea areas was considered.
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Original Russian Text © E.V. Rumyantseva, A.N. Veleshko, S.A. Kulyukhin, I.E. Veleshko, D.S. Shaitura, K.V. Rozanov, N.A. Dmitrieva, 2009, published in Radiokhimiya, 2009, Vol. 51, No. 5, pp. 434–438.
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Rumyantseva, E.V., Veleshko, A.N., Kulyukhin, S.A. et al. Preparation and properties of modified spherically granulated chitosan for sorption of 137Cs from solutions. Radiochemistry 51, 496–501 (2009). https://doi.org/10.1134/S1066362209050105
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DOI: https://doi.org/10.1134/S1066362209050105