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Abstract
Activated carbons were prepared from shell (Eucalyptus globulus), by chemically activated by impregnation with sulfuric acid solutions at different concentrations (10, 25, 40 and 60% V / V), followed a process of carbonization was performed and finally the samples were washed until constant pH. For the characterization of samples different techniques were calculated; the apparent surface area and micropore volume using N2 physisorption was evaluated, the sample increased surface area provided was more activated acid concentration which presents values of area of 513 m2 g-1 solid and also has greater with micropore volume 0.340 cm3 g-1. The surface chemistry of the activated carbon was characterized by Boehm method, where it is evident that the values of concentrations of acidic groups are high; up to 0.364 meq g-1,which was confirmed by the low values in the pHpZc aspect of the nature of the activating agent used, plusimmersion calorimetry was used for further characterization of the surface chemistry which is continuous with the trend indicated. After the characterization of samples proceeded to application from aqueous solution which was adsorbed:phenol p-chlorophenol, p-nitrophenol and highly polluting compounds showing results in the adsorption capacity of the carbon to 2500.00 mg g-1. Likewise, a study of immersion calorimetry phenols were carried out where is observed high correlation between the energetic values and the adsorption capacity of ACs and textural properties of these.