caa a22 4500 465730841 CHVBK 20180323111741.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF02039502 doi (NATIONALLICENCE)springer-10.1007/BF02039502 Aksoyoglu S. Paul Scherrer Institute, CH-5232, Villigen PSI, (Switzerland) aut Cesium sorption on mylonite [Elektronische Daten] [S. Aksoyoglu] As part of the laboratory support program for the field migration experiment at the Grimsel Test Site (GTS) in the Swiss Alps, the sorption behaviour of cesium on Grimsel mylonite was studied. Batch sorption experiments were carried out in N2 atmosphere (<3 ppm O2). The adsorption isotherms were reversible and non-linear for cesium concentrations of between 3.2·10−8 and 5.0·10−4M. Two different sites appear to be involved in sorption depending on whether Cs loading was high (10−6-10−3 meq/g) or low (10−7-10−6 meq/g). At low Cs loadings adsorption was considered to occur mainly at the crystal edges of mica particles. Selectivity coefficients for exchange between cesium and potassium were calculated for different Cs loadings. It was suggestd that by varying the potassium concentration of the solution and by making some assumptions, a Kd value for cesium at the migration site could be estimated. Data were fitted to both Freundlich and Dubinin-Radushkevich isotherms. The empirical Freundlich parameters enabled a site distribution function to be calculated and a mean energy of sorption of about 12 kJ/mol was found using Dubinin-Radushkevich isotherms approach. Akadémiai Kiadó, 1990 Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 140/2(1990-06-01), 301-313 0236-5731 140:2<301 1990 140 10967 https://doi.org/10.1007/BF02039502 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02039502 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Aksoyoglu S. Paul Scherrer Institute, CH-5232, Villigen PSI, (Switzerland) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 140/2(1990-06-01), 301-313 0236-5731 140:2<301 1990 140 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer