Propriedade da madeira de Acacia mangium para produção de energia

Abstract

Considered an invasive species, Acacia mangium has been causing ecological imbalance in some areas, especially in places where some type of disturbance and/or degradation has occurred, which hinders the reestablishment of native species in these areas. Therefore, with a view to finding an alternative use for this species as a way of controlling its spread, this study aims to analyze the energy potential of A. mangium wood, focusing on its use as an energy source through direct burning. Anatomical (heartwood and sapwood ratio) and physical (basic density and moisture content) properties were evaluated in different sections along the trunk (0%, DBH, 25%, 50%, 75%, and 100% of commercial height) of eight trees. The discs removed from the DBH were also subjected to elemental chemical analysis (H, O, N, C, and S contents) and higher calorific value analysis. The experiment was conducted in a completely randomized design (CRD), establishing as treatments the different positions along the stem, from base to top (0%, DBH, 25%, 50%, 75%, and 100% of commercial height), with eight trees collected, totaling 48 experimental units. The results indicated the suitability of A. mangium for energy, where its use implies less dispersion in the municipality and contributes to the control of its population. This use also has socioeconomic benefits by diversifying the regional energy matrix, consequently reducing the exploitation of native species for energy purposes.