FIELD: process engineering.
SUBSTANCE: invention relates to extraction of platinum group metals from industrial effluents and can be used for analytical definition of said metals by sorption-atomic-absorption method. Proposed method comprises bringing solution in contact with sorbent. The latter represents dispersion of collagen produced on mixing three parts of formalin with half the part of protein hydrolyzate extracted from leather production wastes, and 7.5 parts of hydrogen sulphide, mix neutralising, filtration, drying and fine-crushing.
EFFECT: high sorption capacity and selectivity, reduced costs.
3 cl, 1 tbl, 3 ex
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