METHOD FOR SORBENT PRODUCTION BASED ON POLYMER HYDROGEL Russian patent published in 2017 - IPC B01J20/30 B01J20/02 B01J20/26 

FIELD: chemistry.

SUBSTANCE: method for sorbent production based on polymer hydrogel includes polymer matrix macromolecules cross-linking and introduction of compounds with ion-exchange properties. Polyacrylamide is used as a polymer matrix, polyacrylamide is cross-linked by a crossing agent, represented by dimethylolurea in a weakly acidic or acidic medium, the crosslinked polymeric matrix is hydrolyzed and washed to pH 8-8.5. Introduction of compounds with ion exchange properties into the crosslinked structure is carried out by sequential treatment of transition metal alkali metal ferrocyanide with solutions.

EFFECT: high selectivity towards Cs radionuclide, high sorption kinetic characteristics in static and in dynamic mode, high sorption capacity reaching hundreds of milligrams of cesium per gram of sorbent.

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