RESÍDUOS MADEIREIROS DE ESPÉCIES AMAZÔNICAS PARA A PRODUÇÃO DE PELLETS

Abstract

The timber industry in the Amazon has great production potential, but it also generates wood residues that can be used to obtain other products. Some companies already use them as biofuels in the form of briquettes that are sold for power generation. An alternative use is in the production of pellets, which achieve some advantages over briquettes such as the possibility of automating the burning processes. Thus, the possibilities of financial return and environmental highlight of the company with a "green marketing" are greater. In this context, the objective of this work was to produce pellets from waste from decks and floors and evaluate their quality through the ISO 17225-2 standard. Wood residues of the species Handroanthus serratifolius (Vahl) S. Grose (yellow ipe), Hymenaea courbaril L. (jatobá), Manilkara elata Huber (maçaranduba), Dinizia excelsa Ducke (stone angel), Astronium lecointei Ducke (muiracatiara) and Pinus taeda, the species currently most used in the production of pellets in Brazil. The production of the pellets was carried out in an Amandus Kahl laboratory pellet machine model 14-175. The evaluated parameters were: diameter, length, moisture content, unitary density, bulk density, mechanical durability, fines content, volatile and fixed carbon content, ash content, higher and lower calorific value, energy density, resistance and supported to therapy (adapted method) through Pearson therapy and linear regression. The results obtained for the 7 types of pellets produced met the regulatory requirements for residential, commercial and industrial use, highlighting the bulk density that was above the parameters, positively influencing the energy issue. Among the species, the wood of the yellow ipê stood out, which presented values of higher calorific value of 20,18 MG.kg, such as a net calorific value of 17,17 MJ.kg and energy density of 13,93 GJ.m³.