FIELD: sorbents in petroleum industry.
SUBSTANCE: method comprises applying a layer of organosilicon compound in water-alcohol medium onto the surface of swelled perlite and/or vermiculite. More specifically, granules of swelled perlite and/or vermiculite are stirred in water-alcohol solution of octyltriethoxysilane until hydrolytic polycondensation to form hydrolytically stable organosilicon film on the surface of granules, after which sorbent is dried in warm air flow or in natural manner. Such process requires less power and organosilicon compound deeper penetrates into pores of swelled perlite and/or vermiculite granules thereby increasing degree of floatability of sorbent and its sorption capacity.
EFFECT: increased sorption capacity.
2 cl, 3 tbl, 2 ex
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