Caracterização das madeireiras no município de Palmeira dos Índios seus resíduos dendroenergéticos no município de Palmeira dos Índios, Alagoas.

Abstract

The work was conducted in two stages. In the first phase was conducted Diagnostics of major sawmills in the town of Palmeira dos Índios. The second phase consisted of the dendroenergetic characterization of waste generated in the sawmills. The properties were evaluated: elementary chemical composition, moisture, bulk density, ash content, calorific value higher, lower calorific value and energy density of wood residues of five species: Amarelo cetim (Euxylophora paraensis Huber), Angico do Pará (Anadenanthera colubrina, Pará (vell.), Jaqueira (Artocarpus heterophyllus Lam.), Jatobá (Hymenaea courbaril L.) and Louro (Laurus nobilis L.). As for elemental analysis the carbon content of the waste of Amarelo Cetim, Angico do Pará and the Louro, 47.57%, 47.60% and 47.63% were the ones who presented a higher amount. The Jatobá and Angico do Pará 0.32% and 0.33% were the species that showed lower nitrogen content. The waste that had higher hydrogen content were the Louro (6.11%) and Amarelo cetim (6.05%). The Louro presented the lowest moisture content of 9.75%. Already the Yellow satin was the species that showed lower ash content of 0.34% and higher bulk density of 0.34 g.cm-3. The Angico do Pará presented greater values for higher calorific value and lower calorific value, and 4568 kcal.kg-1 and 4885 kcal.kg-1, respectively. The amarelo cetim and Angico do Pará presented a higher energy density 1655.4 kcal.m-3 and 1563.8 kcal.m-3, respectively. The results showed that the two species most used in sawmills in the region were the Angico do Pará and the Jatobá, thus creating the waste type, shavings and chips. These residues have as two main areas: first, in aviaries, serving as a bed for birds, and the second, for the generation of energy by burning. The waste generated by saw mills showed good quality for production of energy by burning the Angico do Pará and the Amarelo cetim.