The adsorption of phenol by activated carbons obtained by the alkaline thermolysis (KOH, 800 degrees C) of fossil coals of various degrees of metamorphism (C-daf = 70.4-95.6%) was studied. Kinetic dependences and adsorption isotherms were obtained at initial concentrations of <= 3 mg/cm(3) (25 degrees C). The rate constants of absorption of the adsorbate, maximum and specific capacities for phenol, and their dependences on C-daf were determined. The main processes of the interaction of phenol with surface adsorption centers are discussed.
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