FIELD: metallurgy.
SUBSTANCE: cleaning is performed by dilution of a catalyst with different reagents in an electrolysis unit, the cathode and anode space of which is divided with a membrane. Cleaned carbon nanomaterial (CCN) is located in anode space of electrolysis unit. As electrolyte there used are water solutions of substances, at electrolysis of which in anode space of electrolysis unit an accumulation of reactive anions forming water-soluble salts with catalyst takes place.
EFFECT: use of the invention requires no high amount of reagents for removal of catalyst; reagent itself is not consumed and can be used for many times; no formation of high amount of waste water takes place.
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