FIELD: sorbents. SUBSTANCE: clinoptilolite is impregnated with 10-16% aqueous solution of organic polymer/epichlorohydrin (molar ratio from 1:1 to 10: 1), after which excess impregnation solution is removed by filtration to give wet sorbent. The latter is washed with 10-15% alkali solution, then with water, and dried with hot air. Organic polymer in use is polyhexamethyleneguanidine or polyethyleneimine, or yet their 4:1 and 1:4 copolymers. EFFECT: simplified process technology, reduced expenses, and improved quality of product. 2 cl, 1 tbl
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Authors
Dates
2000-12-27—Published
1999-12-14—Filed