CESIUM ADSORPTION ON COMPOSITE FERROCYANIDE-ALUMINOSILICATE ADSORBENTS

The formation of composite ferrocyanide adsorbents prepared on the bas is of clinoptilolite is studied by potentiometric titration, X-ray dif fraction analysis, and IR spectroscopy, and the nature of ion-exchangi ng complex is established. Exchange capacity, selectivity, and hydroly tic stability of the sorbents are characterized. Distribution coeffici ents with modified samples can be as large as 10 000 for Cs-137; howev er, with increase of the background salt concentration above 0.17 g 1( -1), competing ions have noticeable effect on the adsorption propertie s of the aluminosilicates.