Resumo

HERRERA BUILES, Jhon Fredy; MORALES YEPES, Wilmar Alexander  e  PEREZ SCHILE, Juan David. SELECTION OF A METHOD TO PRODUCE ACTIVATED CHARCOAL USING FOUR FOREST SPECIES. Rev. Fac. Nac. Agron. Medellín [online]. 2004, vol.57, n.2, pp.2501-2516. ISSN 0304-2847.

This investigation was conducted in the Coal and of Forest Products Laboratory of the Universidad Nacional de Colombia, Sede Medellín. It was oriented towards the selection of a method to obtain activated carbon form the following forest species; pino pátula (Pinus patula), chingalé (Jacaranda copaia), pino tecunumani (Pinus tecunumanii) and roble (Quercus humboldtii). The wood of each was characterized determining their physical properties of density and contraction. Seven different methods were tested; chemical activation, chemical-physical activation with CO₂, chemical-physical activation with CO₂ and water vapor; chemical-physical activation with water vapor;  physical activation with CO₂; physical activation with water vapor, and physical activation with CO₂ and water vapor.  The variables studied were residence time and temperature. Taking as a parameter the iodine index, the chemical-physical activation with water vapor was selected, obtaining an iodine index of over 800 for all the species studied, with the exception of roble that only attained 764, which is still acceptable for water treatment.

Palavras-chave : Activation; iodine index; pátula; tecunumani; chingalé; roble.

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