Caracterização química e energética da madeira de quatro clones de eucalipto

Abstract

In the present work the objective is to carry out the chemical and energetic characterization of the wood of four 4-year-old Eucalyptus clones. For this, the clones H13, GG100, VM01 and I144 were selected in forest stands with spacings of 3x3, 3x2, 3x3 and 3x2 m, respectively, in the city of Sorriso, State of Mato Grosso. From each clone, three trees were felled for removal of a 1.3 m high wooden disk (DAP). The disks were fractionated in two opposite wedges, one of the wedges being sectioned for sampling the basic specific mass and the other transformed into a 50-mesh granulometry sawdust for determination of the chemical properties (holocellulose, lignin, extractives and ash) and (Higher calorific value and energy density). The clones presented average values of basic specific mass of 0.40 g / cm³, ash content of 0.32%, lignin content of 19.05%, holocellulose content of 77.71% and extractive content of 2, 92%. Clones VM01 and GG100 presented the highest values of direct upper calorific value, respectively, being the values of 4199.16 Kcal / kg and 4223.45 Kcal / m³. Clones H13 and VM01 presented the highest values of energy density, respectively, being the values of 1820722,23 Kcal / m³ and 1669514,82 Kcal / m³.