SORPTION OF COBALT AND CADMIUM BY MEXICAN ERIONITE

The sorption behaviour of cobalt and cadmium by Mexican erionite was s tudied at different pH values and the ion exchange isotherms were dete rmined. Sorption experiments were performed with cobalt and cadmium so lutions. The cobalt, cadmium and sodium content in the aluminosilicate samples were determined by neutron activation analysis. It was found that the sorption for cadmium was higher than for cobalt, however, the selectivity for both cations was low in this zeolite.