Browsing by Subject "Distribution ratios"
Now showing 1 - 3 of 3
- Results Per Page
- Sort Options
Item Open Access Migration behaviour of Barium and Strontium in Granite(De Gruyter Oldenbourg, 1994-12-01) Hatipoğlu, S.; Göktürk, H.; Erten, H. N.The sorption behaviour of Ba2+ and Sr2+ cations on granite have been studied under flowing and static conditions in column and batch experiments. 133Ba, 90Sr and 3H were used as radio tracers. The retardation factors, R1, and distribution ratios, Rd, of barium and strontium in column experiments were found to be smaller than those from batch experiments. In both techniques barium was sorbed more strongly on granite than strontium. Sorption energies were found to be in good agreement with literature val-ues.Item Open Access Migration behaviour of barium and strontium through colemanite(De Gruyter Oldenbourg, 1996) Hatipoǧlu, S.; Göktürk, H.; Erten, H. N.Column and batch experiments were performed to study the migration behaviour of Ba and Sr in colemanite matrix. 133Ba. 90Sr and 3H were used as tracers. The retardation factors and the distribution ratios of Ba and Sr in column experiments were found to be smaller than those obtained in batch experiments. Sorption Ra values of Ba were higher than those of Sr determined by both techniques. Sorption energies calculated from batch experiments are in good agreement with the literature values.Item Open Access Sorption of cesium and strontium on montmorillonite and kaolinite(De Gruyter Oldenbourg, 1988) Erten, H. N.; Aksoyoglu, S.; Hatipoglu, S.; Göktürk, H.Sorption characteristics of Cs+ and Sr++on montmorillonite and kaolinite type clays and soil fractions from various regions of Turkey were studied using the batch method. 137Cs and 90Sr were used as tracers. Concentrations of Cs+ and Sr++ ions ranged from 10-8to 10-2 mol/1; natural groundwater was used and the grain size of the solid particles was < 20 yμm. Equilibrium was reached in 4 - 7 days for Cs+and 7 - 11 days for Sr++. The distribution coefficient, RD, increased with decreasing grain size, suggesting mainly a surface phenomenon. The sorption isotherms were non-linear suggesting at least two different sorption processes. The sorption was found to be predominantly reversible. Cs+ was sorbed much stronger than Sr++in all samples. © 1988, Walter de Gruyter. All rights reserved.