The use of columns of the zeolite clinoptilolite in the remediation of aqueous nuclear waste streams.

Mud Hills clinoptilolite has been used in an effluent treatment plant (SIXEP) at the Sellafield nuclear reprocessing site. This material has been used to remove Cs and Sr successfully from effluents for 3 decades. Samples of the zeolite have been tested in column experiments to determine their ability to remove radioactive Cs and Sr ions under increasing concentrations of competing ions, Ca, Mg, Na and K.