Abstract
The expanded perlite and base activated perlite (Zeolite-NaA) results from treating perlite has a SiO2:Al2O3 ratio similar to 2 were used as an adsorbents for the removal of Ce-144 and Eu-1(52)+(154). The two adsorbents were fully characterized. The factors affecting the sorption of radionuclides onto expanded and modified perlite including contact time, pH, ion concentration were investigated. The modification process of expanded perlite enhanced the removal of Eu-152(+)154 from 17.0 to 97.0%, while for Ce-144 from 22.0 to 91.0 %. Both Ce-144 and Eu-152(+1)54 obey Langmiur isotherm model in case of using modified perlite (Zeolite-NaA) and expanded perlite.