Separation of Cesium by Electro Dialysis Ion Exchange using AMP-PAN

The separation process involved the use of an electro dialysis-type cell in which the center compartment was filled with a packed bed of ion-exchange resin particles.AMP-PAN was initially loaded with Cs+ before introducing into the feed compartment of the cell. Under an applied electric potential, the Cs ions attached to the resin were substituted by regenerating ammonium ions coming from the anodic compartment and transferred into a receiver compartment at the cathodic side where they were concentrated. Separation of cesium by the EDIX method was carried out at different current densities (16-24mA/cm(2)), different concentration of the regenerating ammonium ions (0.27M-1.4M), and with different adsorbent capacities. In the continuous electroextraction, within 30 hours of operation removal efficiencies greater than 80% were obtained.