FIELD: polymeric sorbents.
SUBSTANCE: invention provides complexing sorbent containing active polymer layer condensed with complexons and immobilized on a solid support selected from the following group: .epoxated cellulose, styrene/divinylbenzene copolymers, activated with chloromethyl, hydroxymethyl, sulfone chloride groups, and sulfone group-activated phenol-formaldehyde resins. Active sorption layer contains ethylenediamine or diethylenetriamine, or triethylenetetramene, or polyethylenepolyamine with copolymers, whereas complexons are selected from group including carboxyl-containing complexons, hydroxyl-containing complexons, and phosphone-containing complexons.
EFFECT: enabled sorption of unlike-valent ions of a variety of metals from aqueous solutions within a wide pH range and regeneration of sorbent by treatment with dilute mineral acid.
18 cl, 1 dwg, 2 tbl
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