SORBENT FOR AQUEOUS MEDIA TREATMENT FROM METAL IONS AND A METHOD OF ITS PRODUCING Russian patent published in 1996 - IPC

FIELD: treatment of an aqueous media. SUBSTANCE: sorbent has macroheterocyclic polyester of the formula where n = 1-9; X - heteroatom; c, j, k - ordinal number of corresponding heteroatom, or where X_i, O, O correspond to oxygen atom; i = 0, n + 1; X_o, j, O correspond to nitrogen atom, j = 0, n + 1; X_o, O, K correspond to sulfur atom, k = 0, n + 1; i + j + + K i+j+K ≥ 2 2; m = 0, 1; p = 0-3; t = p, p + 1 bound with nonmodified matrix surface taken from the group of silica, diatomite and copolymers styrene-divinylbenzene. Polyester rings were grafted directly to adsorbent surface and cross-linked additionally each with other. Method of sorbent producing involves the impregnation of matrix with macroheterocyclic polyester solution and the following removal of solvent. Reaction of polyester with matrix surface is carried out at the effect of α,β,γ-radiation at absorbed dose 0.01-1.0 MGr followed by sorbent heating at evaporation or sublimation point of crown-ether under vacuum or inert atmosphere. EFFECT: enhanced quality of sorbent. 3 cl, 2 dwg, 3 tbl