Experimental investigation of radiocesium sorption on ceramic clay using a batch method

Abstract

In this study, radiocesium sorption on ceramic clay was investigated as a function of particle size and initial Cs-137 concentration using a batch method. Ceramic clay samples taken from the Sogut(A degrees nisar) clay deposit were composed of kaolinite, dickite and quartz. The equilibrium time and the liquid-solid ratio were determined as 60 min and 250 mL g(-1), respectively. The distribution coefficients (K (d)) for variable liquid-solid ratio and the percentage adsorption (P (Ad)) were calculated. The values of K (d) and P (Ad) ranged from 483 to 3165 mL g(-1) and 34-93%, respectively. The K (d) and P (Ad) values increased with increasing particle size, but decreased with increasing initial concentration. The sorption data were interpreted in terms of a Langmuir isotherm. The results indicated that the Sogut(A degrees nhisar) ceramic clay has good sorption capacity for cesium.