01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Glicerina bruta produzida pela Biorrefinaria Berso: purificação e preparação do carbonato de glicerol(2022-10-17) Ribeiro, Rubson Patrik Sena; Araújo, Patrícia Lopes Barros de; Oliveira, Ronaldo Nascimento de; http://lattes.cnpq.br/9071551767043294; http://lattes.cnpq.br/9826955590432737; http://lattes.cnpq.br/7729510453800791Since the last century, the perception of the rampant use of fossil fuels based on oil and natural gas is inevitable. Allied to this, we see a race in search of energy sources that exceed the socioeconomic demand and production of the current world. In Brazil, there is a fertile soil for generating raw material for biodiesel production, due to the large amount of vegetable and oilseed species such as castor bean, palm, sunflower, babassu, peanut, jatropha, soybean, in addition to animal raw material, such as beef tallow, among others. From the transesterification reaction of the triglycerides of an oil or fat with an alcohol, methyl (or ethyl) esters of fatty acids are produced, which are biodiesel. Glycerol is a co-product of this reaction, which receives the commercial designation of glycerin, for samples containing more than 95% of the glycerol compound. The increase in the global supply of glycerin has led to the search for alternatives for the consumption of this co-product in its raw form and/or as derivatives with high added value. This work is based on the inclusion of glycerin as an abundant and cheap input in the high value-added polymer industry. The strategy was based on obtaining glycerol carbonates, a monomer for the synthesis of biodegradable glycerol polycarbonates, from purified glycerin. The results were obtained by obtaining a purified glycerol with 82% purity and a glycerol carbonate with more than 85% purity, both results from the analysis of chemical interactions and characterizations of the products obtained using Fourier Transform Infrared (FTIR), hydrogen and carbon-13 nuclear magnetic resonance (1H and 13C NMR) and Thermogravimetric Analysis (TGA). In this way, this work gains the possibility of solving practical problems related to obtaining advanced polymeric materials for use in industries and laboratories.Item Relatório de Estágio Supervisionado Obrigatório(2019-07-08) Corrêa, Agni Martins Nunes; Soares, Luciana Felizardo Pereira; http://lattes.cnpq.br/4071178363761831; http://lattes.cnpq.br/9829552791035551Item Glicerina bruta na dieta de caprinos confinados: características de carcaça e de perna(2019-02-01) Cordeiro, Eduardo Henrique Araújo; Véras, Antonia Sherlânea Chaves; http://lattes.cnpq.br/0074248045711399; http://lattes.cnpq.br/9903022769655568Goat farming is a widespread activity in the Brazilian semi-arid region. The goat has great adaptation to the climate of this region, which suffers with irregularity in the rains, damaging the production of forage resources. The practice of confinement is an option of the producer to minimize food shortages, implying higher food costs. With increasing supply, crude glycerin (GB) becomes an alternative ingredient in the diet formulation of these animals. The objective of this study was to evaluate the carcass and leg characteristics of goats confined when fed with different levels of crude glycerin (0, 6, 12 and 18%) in the diet. A total of 40 goats were used, with no defined racial pattern, with a mean initial weight of 19.52 ± 2.35 kg, divided into four treatments with 10 replicates, using a completely randomized design. In 58 days of evaluation, the consumption and leftovers of these animals were recorded daily, and food samples and leftovers were collected for bromatological analysis to determine dry matter intake (DMI). At the end of the experimental period, slaughtering was carried out to determine the carcass and leg characteristics of the animals. The content of the gastrointestinal tract increased according to higher levels of GB. The empty body weights; hot and cold carcass weight and their yield; the loin eye areas; and the weights of the reconstituted leg and respective muscles and bones, decreased linearly. The inclusion of GB with low glycerol (63.06%) in up to 18% in DM in the goat diet compromises the main characteristics of the carcass and leg of the animals.