As a result of studying adsorption under static conditions, we obtained isotherms of adsorption of butanol on activated charcoals (Fig. 1). As seen from Fig. 1, the sorption curves in the range of low concentrations of butanol (less than 0.5 wt %) coincide, but with increasing concentration of butanol in water the sorption capacity of birch charcoal becomes significantly greater than that of mixed charcoal. Thus, at the equilibrium concentration of alcohol of 7.5 wt %, the sorption capacity of birch charcoal is 0.84 g g1, which is greater than that of mixed charcoal by a factor of 2 (0.42 g g1).