METHOD OF PRODUCING FERROMAGNETIC CARBON ADSORBENT Russian patent published in 2012 - IPC B01J20/20 B01J20/02 B01J20/30 C01B31/08 

FIELD: process engineering.

SUBSTANCE: invention relates to production of ferromagnetic carbon adsorbents and may be used in sorbent cleaning of industrial effluents, in eliminating oil contamination and selective extraction of noble metals from solutions. Wood chips are treated by 10%-water solution of iron chloride (III) and 10%-water solution of zinc chloride at wood-to-iron chloride-to-zinc chloride ratio equal to 1:0.5:0.5, respectively. Mix is mixed, dried and carbonised in inert gas flow at 400-800°C and linear temperature rise at the rate of 10°C/min, and held at finale temperature for 30 min. Then, product is rinsed by water, filtered out, rinsed again to neutral medium an dried to constant weight.

EFFECT: increased adsorption characteristics, simplified procedure.

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