REMOVAL OF CO-60 BY ZEOLITES AND CLAYS

The use of NaY zeolite, erionite, and bentonite in the removal of radi oactive cobalt from aqueous solutions has been investigated. Ion-excha nge experiments were performed either with inactive cobalt solutions o r labeled solutions containing Co-60. XRD patterns were used to determ ine if cell parameters were alike and to verify if the crystallinity o f the aluminosilicates was maintained during experiments. The cobalt c ontent was determined by neutron activation analysis. According to the exchange behavior, the selectivity sequence to retain cobalt is bento nite < erionite < Y zeolite.