The sorption of cesium and strontium ions onto red-clay from Sivrihisar-Eskisehir (Turkey)

Abstract

The sorption of Cs and Sr ions from aqueous solutions (concentration range: 20-400 mg/L) by red-clay from Sivrihisar-Eskisehir (Turkey) has been investigated using EDXRF spectrometry. The XRD pattern of the sample indicates that it contains montmorillonite, illite, albite, chlorite and quartz. The results indicate the presence of correlations between sorbed Cs ions and desorbed Na and K ions and sorbed Sr ions and desorbed Mg and Ca ions. Sorption processes are found to show a Freundlich-type behaviour. The Dubinin-Radushkevich (D-R) isotherm has been applied to the sorption data and the parameters of the D-R equation were calculated.