PREPARAÇÃO DE CARVÃO ATIVADO EM BAIXAS TEMPERATURAS DE CARBONIZAÇÃO A PARTIR DE

ELAINE PEREIRA, LUIZ C. A. OLIVEIRA, ANDRÉA VALLONE, KARIM SAPAG, MÁRCIO PEREIRA

QUíMICA NOVA

SOC BRASILEIRA QUIMICA

Año: 2008 vol. 31 p. 1296 - 1300

0100-4042

Ferric chloride as a new activating agent was used to obtain activated carbons from agroindustrial waste. This material was prepared at three temperatures of pyrolysis, 200, 280 and 400 oC. The carbonaceous materials obtained after the activation processes showed high specific surface areas (BET), with values higher than 900 m2 g-1. The materials showed different behaviors in the adsorption of methylene blue dye and reactive red textile dye in water solutions. An important fact in the use of FeCl3 as an activating agent is that the activation temperature is at 280 oC, well below of those commonly employed in chemical or physical activations described in the literature.