Engenharia Química
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Navegando Engenharia Química por Autor "Albino, Rafaela Brognara"
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Relatório de Estágio Acesso aberto Análise de degradação de produto alimentício: estudo da vida de prateleira(2018) Albino, Rafaela BrognaraThis research about cream shelf life tests was developed by using three different temperatures: the first at control temperatura (5ºC), one at ambient temperature (25ºC) and another at accelerated condition (35ºC). Physicochemical, microbiological and sesorial analyzes were carried out to verify the changes of the initial parmeters over time. The acidity of the product was defined as the main parameter of degradation, which is represented in percentage of lactic acid. The sensorial analyzes presented falls, which were expected, but without impairing the total quality of the product. In the microbiology, the count of aerobic mesophiles was analyzed, which presented a very characteristic growth curve at 5ºC, staphylococcus had practically no results in all the analyzes, and about total and thermotolerant coliforms analyzes, which presented contamination in almost 30% of the samples. The acidity analyzes resulted in very satisfactory curves, showing that the storage temperature interferes directly with the quality of the food. As for the kinetic treatment of the data, the differential method was applied, using the derivative of the functions obtained at each temperature. The reaction order was found to be 2.5 and the parameter Q10 resulted in 3, showing that the degradation reaction of the cream is very sensitive to changes in temperature. The place was evaluated that the method has conditions to be implanted in the research site, but needs some improvements, such as acquisition of materials and greater number of analysts.Plano de Negócio Acesso aberto Projeto de viabilidade econômica de produção de etanol de segunda geração utilizando biomassa lignocelulósica proveniente de indústrias de beneficiamento de arroz(2017) Carvalho, Patrícia de; Acco, Giovana Lara; Martins, Jefferson; Vieira, José Luiz; Limas, Karine; Albino, Rafaela BrognaraWith increasing demand for alternatives to trade petroleum-based products, demand for new renewable sources has grown, for example, bioethanol. This product has been produced already in Brazil for some time, from sugarcane, which has raised the Brazilian indices of production of first generation alcohol. However, an alternative is second-generation ethanol, produced from cereal crops bagasses's, such as rice husks. Nowadays, the main purpose of the rice husk is generates energy by burning it, however can also be used to produce second generation alcohol, since it has a considerable amount of cellulose, which makes it perfect to the process of biofuel production. Thus, it is presented the proposal for an installation of a biorefinery in the state of Santa Catarina, using lignocelluloses biomass coming from the rice processing industries. The present Course's Completion Project presented to the Course of Chemical Engineering of the University of the South of Santa Catarina, was divided in specific areas for a better understanding. It begins with strategic planning and marketing, which is a methodology capable of establishing the direction that must be taken by the company, with the objective of integrating it into its operational environment. Followed by quality management, which is a managing focused on the quality of production and services of the company; Basic Engineering, which understands and designs all the necessary requirements for the company's implementation, focusing on the production process; Environmental Engineering, which aims to plan an adequate management, either by solving environmental issues or preventing possible negative consequences related to production processes; The safety engineering, which goes to anticipate the risks of accidents and therefore trying to minimize them. Finally, the economic planning, that identifies the expected benefits of an investment to verify its implementation’s viability, analyzing the costs and benefits of the project.