Sorption of radioactive elements by zeolite-bearing rocks

The study of removal of radioactive elements (uranium, radium and thorium) in static conditions from aqueous solutions by different absorbents: clinoptiloliteand analcime-bearing rocks, pure analcime was carried out. The high removal efficiency of radium, thorium and uranium by analcime-bearing rocks was determined. Clinoptilolite-bearing rocks removed thorium and radium almost completely, but uranium extraction from solution was less complete. Analcime was efficient only in case of thorium.