TCC - Engenharia Florestal (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/436
Navegar
2 resultados
Resultados da Pesquisa
Item Caracterização energética da madeira de quatro clones de Eucalyptus plantados em Pernambuco(2024-03-08) Araújo, Juliana Cristina Rodrigues de; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/4227532833595437Brazil's main energy matrix is hydroelectric plants, however, not all regions are able to achieve the desired energy supply rates, so the search to diversify the energy matrix using the available resources of each region is on the rise. The Brazilian energy matrix has always used forest biomass to be able to meet part of the demands, with charcoal and firewood as the main use. Thus, the present work aimed to carry out the energetic characterization of the wood of four clones of Eucalyptus, being the hybrids E. urophylla x E. grandis and the (E. camaldulensis x E. grandis) x E. Urophylla, both six years old, collected in the municipality of Paudalho in the Zona da Mata of Pernambuco and two clones of Eucalyptus urophylla with eight years of age, from an experimental plantation located at the Experimental Station of the Agronomic Institute of Pernambuco (IPA) in the Araripe plateau, municipality of Araripina – PE. The analyses were conducted at the Wood Technology and Anatomy Laboratory of the Department of Forest Science of the Federal Rural University of Pernambuco - UFRPE, where the content of volatile materials, ashes, and fixed carbon of the wood was determined according to ASTM standards. Based on the values of the variables obtained, the upper, lower and useful calorific value were estimated. Data were submitted to Tukey's test (p = 5%) to compare means. According to the results obtained, the clones did not show any difference in relation to the analyzed variables, so all of them would be a viable alternative energy matrix for the region. It is recommended to study other properties of the wood, including the energetic ones, as well as the growth variables of the material, seeking to obtain more information to select the best genetic material for the production of biomass for energy in the region.Item Caracterização de material lenhoso como fonte energética viável no Brasil: uma análise sistemática da produção científica brasileira(2021-07-13) Melo, Vitória Larissa Moreira; Nogueira, Marcelo; http://lattes.cnpq.br/2791448000405507; http://lattes.cnpq.br/5399606076137792The search for renewable energy sources has been growing rapidly over time. When wood is used for energy production, some characteristics must be taken into account, such as the growth or dendrological characteristics of the plant, as these significantly influence the production of individual dry matter or by area, in addition to its composition (chemical, elementary and immediate). The objective of this work was to use the scientific literature to understand the main characteristics associated with woody material, so that it can be considered a good source of energy. The methodology used for this work was the selection of studies carried out from a systematic review, where 174 articles were analyzed and synthesized. These studies were published from 2000 to mid-2021 in English, Spanish and Portuguese. The vast majority of studies were carried out in the Brazilian state of Minas Gerais, followed by São Paulo, Santa Catarina and Pará. The species used in the articles for analyzes and laboratory tests were tree species of the genus Eucalyptus sp. (44%), Pinus sp (8%) and other species (48%). There was a sharp increase in the production of articles in the North and Northeast regions during the last 6 (six) years. The units of analysis targeted by these studies were wood characteristics such as basic density, higher calorific value, volatile materials content and total lignin content. These variables were statistically analyzed in a non-parametric way. Therefore, woody materials with a basic density of 0.6 g.cm-3, higher calorific value of 19.7 MJ.kg-1, volatile materials content and lignin content of 27.79% and 28 % respectively. The importance of having scientific material for consultation regarding the use of forest biomass as energy material is due to the dissipation of information to the main interested parties in the use of forest biomass and woody material as an energy source.