Sorption of cesium

Sorption of cesium in synthetic groundwater on clay minerals ... 

Comans RNJ, Haller M, De Preter P (1991) Sorption of cesium on illite Non-equilibrium behavior and reversibility. Geochim Cosmochim Acta 55 433-440... 

Rates of ion exchange on kaolinite, smectite, and illite are usually quite rapid. Sawhney (1966) found that sorption of cesium on illite and smectite was rapid, while on vermiculite, sorption had not reached an equilibrium even after 500 h (Fig. 5.5). Sparks and Jardine (1984) found that potassium adsorption rates on kaolinite and montmorillonite were rapid, with an apparent equilibrium being reached in 40 and 120 min, respectively. However, the rate of potassium adsorption on vermiculite was very slow. Malcom and Kennedy (1969) studied Ba-K exchange rates on kaolinite, illite, and montmorillonite using a potassium ion-specific electrode to monitor the kinetics. They found >75% of the exchange occurred in 3 s, which represented the response time of the electrode. The rate of Ba-K exchange on vermiculite was characterized by a rapid and slow rate of exchange. 

Variables found to be significant for sorption of cesium, strontium, technetium, selenium, neptunium, plutonium, americium, and radium on sandstone and tuff at 23°C are given in Table VII. They are ranked in order of significance where more than one variable was found to be significant. The ( + ) and (-) signs indicate whether sorption is increased or decreased. 

Liang T., Hsu C., Sorption of Cesium and Strontium on Natural Mordenite , Radiochimica Acta. 61(1993) 105. 

Khan S. A., Riaz-ur-Rehman, and Kahn M. (1994) Sorption of cesium on bentonite. Waste Manage. 14(7), 629-642. 

Comans, R. N. J., Haller, M., and de Preter, P. (1991). Sorption of cesium on illite non-equilibrium behaviour and reversibility. Geochim. Cosmochim. Acta 55, 433-440. 

Hakem N, Al Mahamid I, Apps J, et al. 1997. Sorption of cesium and strontium on Savanah river soils impregnated with colloidal silica. Conf. Proc.-Int. Containment Technol. Conf. 

Egorova, N.V., Krylov, V.N., Pitalev, V.G., Stepanov, A.V., 1977. Inorganic sorbents in the radiochemical analysis of seawater, IV. Influence of the conditions of synthesis of zirconium ferrocyanide on the sorption of cesium-137. Radiokhimiya 20, 737-741. 

Heimann, R.B. (1988a) Interaction of cement and radioactive waste forms in multicomponent system tests at 200°C. Part 1 Leaching and sorption of cesium, strontium and actinides. Cem. Concr. Res., 18, 389 00. 

The authors of [266] studied sorption of cesium, strontium and cadmium by dry and live biomass of hiratake and the chitin extracted from it (Table 26). It is apparent from Table 26 that sorption in the Cs < Sr < Cd < Pb series increases. It is specified in literature [83, 267, 268] that chitin binds ions of metals in the result of complex formation, ion exchange or surface sorption since there are carboxyl, hydroxyl and acetamide groups in its macromolecule. Chitin ability for complex formation is attributed to a high electrodonor ability of nitrogen and oxygen atoms. 

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