Sorption of cesium and cobalt from simulated waste by PAN based hexacyanoferrates

Three different inorganic sorbents, granular hexacyanoferrate-based ion exchanger, was developed for the removal of Cs and Co from waste solutions containing different complexing agents as detergents. Radiation and thermal stability studies show that these adsorbents can be used for medium active waste treatment. The contents of active component in composite absorber was varied over a very broad range of 5 to 95% of the dry weight of the composite adsorber, and tested for separation and concentration of various stimulated wastes. Composite inorganic-organic adsorbers represent a group of inorganic ion exchangers modified by using binding organic material, polyacrylonitrile, for preparation of larger size particles with higher granular strength. At the same time, kinetics of ion exchange and sorption capacity of such composite adsorbers is not influenced by the binding polymer.

کلیدواژه ها:

Hexacyanoferrates ، Polyacrylonitrile binder ، sorption properties ، radioisotope separation