Adsorption of Phenol by Carbon Sorbents Based on Oxidized Coals
Solid Fuel Chemistry
, E-ISSN: 1934-8029
||Adsorption Carbon Carbonization Potassium hydroxide
Institute of Coal Chemistry and Chemical Materials Science, Siberian Branch,
Russian Academy of Sciences, Kemerovo, Russia
Kemerovo Research Center, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
The adsorption of phenol by carbon sorbents obtained by the carbonization (800°C, 1 h) of coals of different ranks in the presence of potassium hydroxide, which was introduced by mechanochemical treatment at a KOH/coal weight ratio of 1.0 g/g, was studied. The specific surface areas and micropore volumes of the obtained samples varied within the limits of 900–1400 m2 and 0.26–0.47 cm3/g, respectively. The kinetics of phenol adsorption from solutions with an initial phenol concentration of 0.1–3.0 mg/mL at 20°C was studied. The effectiveness of the adsorption of phenol, the order of reaction, and the rate-limiting stage were determined.