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This paper aimed to evaluate the quality of wood and charcoal of Astronium fraxinifolium and Enterolobium gummiferum from Brazilian savannas (Cerrado). Discs from three trees of each species were removed at a height of 1.30 m above ground level. The samples were prepared for the analysis of the energy density and chemical components of the wood and for the production of charcoal at two final carbonization temperatures (350 and 450 ºC). After characterizing the charcoal, the carbonization yield and charcoal productivity per unit of wood volume were calculated. The wood of native species had potential for energy purposes. E. gummiferum charcoal stood out for its low ash content, and A. fraxinifolium wood presented higher apparent density and, consequently, higher carbonization yield and charcoal productivity per unit of wood volume. Charcoals produced at the two final carbonization temperatures presented adequate parameters for the steel industry and domestic use. The final temperature of 350 ºC is indicated as it presents higher gravimetric yield and energy yield of carbonization. |
