Activated carbons from lignocellulosic wastes from the extraction of tannins

Abstract

This paper studies the possibility of obtaining activated carbons from lignocellulosic wastes. Three types of residues, obtained from chestnut shells, acacia pods and grape pips, were studied. To achieve our aim, several parameters commonly used in thermo-chemical processes (pyrolysis, alkaline activation) were evaluated: heating rate, final temperature and maintenance time of final temperature in the pyrolysis, final activation temperature, inert gas flow and the ratio between the activating agent and the sample.