Engenharia Florestal (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/15
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Item Carbonização e análise imediata do carvão vegetal da madeira de Mimosa caesalpiniaefolia Benth e Cupania racemose (Vell.) Radlk(2018-03-01) Gonçalves, Caio Pedro da Silveira; Nogueira, Marcelo; http://lattes.cnpq.br/2791448000405507This paper had the objective of determining the gravimetric yield of the carbonization of Mimosa caesalpiniaefolia and Cupania racemose for charcoal characterization of the wood of these species and indicate the most viable for use as fuel. For the study, six individuals from Mimosa caesalpiniaefolia Benth and six from Cupania Racemosa (Vell.) Radlk were collected at the Pedra Bonita site in Chã-grande, PE, Brazil. The individuals were sectioned in disks along the shaft and later, chips of dimensions 49 x 20 x 4 mm were made along the trunk. The chips were homogenized, comminuted, quarteted and transported to the Forest Technology Laboratory of the Federal Rural University of Pernambuco. Each carbonization was conducted in a total time of 210 minutes at a maximum temperature of 460 ± 10 ° C in a temperature-controlled muffle type oven, rate of 1.4 °C/min after the first hour. NBR 8112/1986 was used, which prescribes the method for the immediate analysis of charcoal. In addition to the NBR, the immediate analysis was conducted according to an adaptation from CETEC (1982) to ASTM (American Society for Testing and Materials) standards. The basic density found for Mimosa caesalpiniaefolia and Cupania racemose was, respectively, 0.87 and 0.83 g / cm 3. The values of ash, volatile matter content, fixed carbon and gravimetric yield for the Sabiá were 1.74%, 46.89%, 44.49% and 44.34%, respectively; and for the Cabotã was 0.25%, 55.26%, 51.36% and 44.12%, respectively. Therefore, both the charcoal coming from Mimosa caesalpiniaefolia and from Cupania racemos have satisfactory characteristics for energy purposes. However, in comparison among the species studied, Cupania racemosa is the most suitable for use as fuel.Item Influência da taxa de aquecimento na produção do carvão da madeira de Eucalyptus spp(2019-07-12) Interaminense, Pedro Paulo Barros; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/7774231489365848This work aims to evaluate two carbonization marches and the fresh material collected in a Eucalyptus stand, located in Araripina - PE, in the northeastern backlands, using several clones who being homogenized to evaluate the practices. The Eucalyptus' samples were transformed into chips and underwent a drying process in an oven regulated at 65ºC ± 5ºC for 48-72 hours, until they reached constant weight, obtaining the moisture content and bulk density. Part of the biomass was intended for immediate chemical analysis and to estimate the superior calorific value, and the rest was used to the carbonization process. The gravimetric yield, immediate chemical analysis, and estimation of the superior calorific value of the charcoal produced were determined. Regarding the immediate chemistry analysis, it was possible to observe the reduction of volatile material contents and increase of fixed carbon after the carbonization process. The estimated calorific value was 4357.35 kcal.kg-1 for the fresh sample and 7220.28 kcal.kg-1 for the first march and the second march, related to the charcoal, was 7265.15 kcal.kg-1. Thereby, the second gear is better to use as charcoal because it has a shorter carbonization time and it has the same quality when compared to the first gear for the variables used.Item Rendimento gravimétrico e análise imediata do carvão vegetal produzido em um protótipo de forno metálico(2019-12-11) Almeida, Drielly Camilla Leal de; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/8868900725139080Construction waste that is of wood plant origin can and should be reused as raw material for the production of charcoal for domestic use. These forest residues, which are used for power generation, can generate income, and it is also an environmentally sound practice that adds value to activities of little relevance. Carbonization is a process of decomposition of wood that occurs by increasing the temperature resulting in a solid material that is charcoal. In carbonization the vegetable biomass releases water and generates some gases resulting from burning that are mostly lost in the atmosphere. It is important to study the material resulting from carbonization in the use of a better use in energy production. Where this study brings the carbonization efficiency of the plant material characterizing it according to the physical properties that were evaluated: the carbonization yield was 30.76%, wood moisture content averaged 13.19 and coal average. 7.91%, volatile materials 23.12%, ash content 1.61% and fixed carbon 75.27%.Item Características físicas, químicas e energéticas de Poecilanthe grandiflora Benth.(2019) Figueiredo, Irismar Farias de; Baracho Junior, ExpeditoThe objective of this work was to determine some physical and chemical properties of the wood of Poecilanthegrandi flora Benth, from Salgadinho municipality, João Bento Site of Batalha - Paraíba. The tests were carried out at the Forest Technology Laboratory of the Federal Rural University of Pernambuco - UFRPE, and at the Forest Products Laboratory of the Ministry of the Environment - MMA, in order to evaluate the results obtained. Disks were sectioned along the trunk to make the chips, presenting dimensions 50 x 20 x 2.5 mm. The carbonization process was carried out in a furnace adapted of the digital muffle type, in the total time of 3 hours and 30 minutes, reaching a maximum temperature of 450 ° C, having a heating rate of 1.4 ° C per minute. The standard used for immediate analysis was NBR 8112. For the wood of Poecilanthegrandi flora Benth, the ash and volatile materials, corresponding to 2.10% and 46.20%, respectively, were found through the immediate analysis of Coal. For the physical properties, 12.80% of moisture and 0.80 g / cm³ of basic density were obtained. In the Laboratory of the Ministry of the Environment, Ash and Extractive Content were found 1.79% and 14.94%, respectively. For basic and apparent density, 0.84 g / cm³ and 0.99 g / cm³ were obtained. It can be concluded that the wood presented good yield for energy generation, but also presented good technological characteristics, beingclassified as high density wood (class).