Adsorption properties of activated coals obtained from the wastes of crops and coals of Tajikistan

Present article is devoted to adsorption properties of activated coals obtained from the wastes of crops and coals of Tajikistan. Sorption properties with respect to lead char semi-coke, obtained from coal of Tajik deposits, walnut shells and sunflower basket were investigated. The adsorption capacity of semi-coke depends on content of mineral substances (ash content), sorbent particle size and solution concentration. The semi-coke from the sunflower basket shows less activity than the semi coke from the walnut shell. The optimal particle size of the adsorbent is 0.025 mm. (author)