INFLUENCE OF FINAL TEMPERATURE ON THE PHYSICAL AND ENERGETIC PROPERTIES OF CHARCOAL OF PIPTADENIA SUAVEOLENS (MIQ.)
06 - Charcoal
1 JESSICA SABRINA DA SILVA FERREIRA, 1 JULIANE DA SILVA SAMPAIO, 1 CARLOS VINICIUS VIEIRA DE SOUZA, 1 SILVINO MAGNO DE OLIVEIRA MOTA JUNIOR, 1 VICTOR HUGO PEREIRA MOUTINHO
1 UFOPA
Renewable energy sources include forest biomass, which can be used as an energy source through wood or charcoal. However, its application is not only related to the burning or combustion of random wood, since wood is a heterogeneous material that is influenced by several factors that affects its properties. Therefore, it is necessary to knowledge its technological characteristics, such as the final carbonization temperature, which presents influence in the charcoal quality. The objective of this study was to evaluate the influence of the final temperature on the physical and energetic properties of the charcoal of Piptadenia suaveolens (Miq.). For this purpose, material from the first log of three trees from native forest was collected, which were unfolded in test samples for later carbonization, and three treatments were applied in the carbonizations, with the final temperatures of 450 ° C, 600 ° C and 750 ° C, respectively. The carbonization process occurred in a muffle-type electric resistance furnace, and the heating rate of 1.67 ° C was applied. The analyzes were performed in triplicate by repetition, using ASTM D7582 - 15 standard for charcoal yield, percent volatile materials, ash and carbon fixed carbon. For higher calorific value, IKA C2000 calorimetric pump was utilized. Charcoal of the specie P. suaveolens obtained a gravimetric yield of 35, 30 and 29%, at temperatures of 450 ° C, 600 ° C and 750 ° C respectively, these three temperatures did not present difference from each other. The values of volatile materials, ash and fixed carbon at 450 ° C were 23.5, 2.3 and 74.2%, while at 600 ° C were 11.6, 0.9 and 87, 5%, and in the temperature of 750 ° C the values were 9.8, 0.9 and 89.3%, respectively. For the higher calorific value, the growth tendency was observed conforming the final temperature increase, to be quoted 7853, 8237 and 8081 Kcal / kg. It was verified that the specie P. suaveolens has high potential for the generation of energy in the form of charcoal. The low values of volatiles and ashes and, the high calorific value found in the charcoal of this specie can favor its use for the steel industry.
Keywords: energy of wood; high calorific value; apparent density.
