Mateus Alves de Magalhães

ENERGY PROPERTIES OF WOOD PARTICLES TORREFIED AT DIFFERENT TEMPERATURES

1 Received on 02.09.2014 accepted for publication on 11.11.2016. 2 Universidade Federal de Viçosa, Programa de Pós-Graduação em Ciência Florestal, Viçosa, Minas Gerais, Brasil. E-mail: <karmiguel@yahoo.com.br> and <mateusmagalhaes91@gmail.com>. 3 Universidade Federal de Viçosa, Departamento de Engenharia Florestal, Viçosa, Minas Gerais, Brasil. . E-mail: <bvital@ufv.br> and <cassiacarneiro@ufv.br>. 4 Universidade Federal de Mato Grosso, Faculdade de Engenharia Florestal, Mato Grosso, Brasil. E-mail: <aylsoncosta@gmail.com>. 5 Universidade de Lisboa, Centro de Estudos Florestais, Lisboa, Portugal. E-mail: <solangeeoa@yahoo.com.br>. *Corresponding author.

ESTIMATES OF MASS AND ENERGY OF DIFFERENT GENETIC MATERIAL EUCALYPTUS

1 Received on 20.10.2013 accepted for publication on 09.11.2016. 2 Universidade Federal de Viçosa, Programa de Pós-Graduação em Ciência Florestal. E-mail: <mateusmagalhaes91@gmail.com>, <karmiguel@yahoo.com.br>, <mourasouzam@gmail.com> and <l.freitasfialho@gmail.com>. 3 Univercidade Federal de Viçosa, Departamento de Engenharia Florestal. E-mail: <cassiacarneiro@ufv.br> and <bvital@ufv.br>. *Corresponding author.

EFEITO DA CARBONIZAÇÃO DA MADEIRA NA ESTRUTURA ANATÔMICA E DENSIDADE DO CARVÃO VEGETAL DE Eucalyptus

This study aimed to evaluate the anatomical changes that occur with charred wood and determine the anatomical properties, basic wood density and apparent density of charcoal Eucalyptus clones, besides elucidating the possible existing significant correlations. The scanning electron microscopy was performed in the transverse, longitudinal and tangential longitudinal and radial wood charcoal sections. In the morphological analysis of the pores and the apparent density was made. In general, the anatomical features such as pore radius and the wood fibers showed little or no change due to carbonization of coal surface and showed well defined structures. The changes in cellular elements of wood were mainly related to the quantitative parameters such as wall thickness and pore diameter fibers. The clones showed satisfactory basic density of wood for charcoal production. The anatomical parameters were significantly correlated with basic wood density and apparent density of charcoal, especially, in this study, the fraction of the fiber wall.