FIELD: chemistry.
SUBSTANCE: method includes coprecipitation at pH 8.9 of magnesium and aluminium hydroxides taken in molar ratio of 4:1, moulding the precipitate and granulating by drying. Successive modification with polyhexamethylene guanidine and 1,8-dioxynaphthalene-3,6-disulphonic acid is then carried out.
EFFECT: increased selectivity of the sorbent.
1 tbl, 1 ex
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