Caracterização energética da madeira de diferentes materiais genéticos de Eucalyptus sp.

Abstract

The knowledge of properties the physical, chemical and energetic wood is relevant to this material has the proper use. One of the characteristics most suitable for power generation is the density, the calorific value and the content of fixed carbon. The aim of this work was to carry out the energy characterization of three genetic material of Eucalyptus sp., being clones H-13 and GFMO-27 and the hybrid E. pellita x E. tereticornis, planted in the municipality of Dois Vizinhos, southwest of Paraná. These three were chosen by outstanding materials in average annual increment in volume, at the age of five, one of fourteen genetic material planted in the same area. Three trees of each of the genetic materials were shot down and three wooden discs, of every tree, were removed the 0%, 50% and 100% of commercial height. These discs were peeled and heavy. Subsequently, it was determined the basic density (NBR 11941:2003), the calorific value (NBR 8633:1984), the immediate chemical analysis (MB 15) and the available energy on wood. Data were analyzed using the analysis of variance and the Tukey test. The values of basic density and ash content showed no statistical difference between the materials. The clone H-13 presented the highest average value of volatile material and consequently, minor fixed carbon. The clone GFMO-27 showed the highest average value of PCU. However, the estimated values of energy available in the wood showed no statistical difference between the genetic material.