The carbonization of Eucalyptus camaldulensis Denhn. was carried out by isothermally heating at selected temperature between 200°-800° C in a flow nitrogen atmosphere within 10 h. Four specimens (3 x 3 x 4 cm each, from 53 months old planted eucalypts) were carbonized in an electrical furnace at a given time and temperature. It was found that the average yield and some properties of charcoal depended on temperature. The charcoal yield was 21.5-91%. The heat of combustion was 4,600-7,480 cal/g. The fixed carbon, volatile matter and ash contents were 19.5-91.5%, 7-80% and 0.2-2%, respectively. Statistical analysis revealed linear relationships between carbonization temperature from 300°
to 600° C versus heat of combustion, fixed carbon and volatile matter contents. The results of this study will be useful for the selection of a carbonization condition of the eucalypt for optimal charcoal yield, heat content, fixed carbon as well as volatile matter contents.
