Resumo

PENA H, Karen J; GIRALDO, Liliana  e  MORENO, Juan Carlos. PREPARATION OF ACTIVATED CARBON FROM ORANGE PEEL BY CHEMICAL ACTIVATION PHYSICAL AND CHEMICAL CHARACTERIZATION . Rev.Colomb.Quim. [online]. 2012, vol.41, n.2, pp.311-323. ISSN 0120-2804.

Activated carbons are prepared by pyrolysis of orange peel, lignocellulosic wastes by chemical activation by impregnation with phosphoric acid at different concentrations (32 %, 36 %, 40 % and 48 % w/V), at a temperature of 373 K and a time residence of 3 h, showing about 36 % yield. The characterization of the porous texture of the activated carbons obtained is determined by physical adsorption of N2 at 77 K, the isothermal analysis sample to the activated carbons obtained surface areas between 940 and 1200 m2g-1 with characteristics of mesoporous materials. The study by equilibrium techniques such as: the titrations type Boehm and determination of residual phosphorus, and spectroscopic techniques such as infrared (IR) can observe how variation in the concentration of activating agent shows an influence on surface chemistry of the carbonaceous material to obtain.

Palavras-chave : Activated carbon; orange peel; physical adsorption; surface area.

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