05.1 - Graduação (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2909
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Resultados da Pesquisa
Item Aplicação das ferramentas da qualidade para a redução das perdas de qualidade numa linha de fabricação de massas(2021-07-15) Cabral, Ariane Nathália de Siqueira Souza; Araújo, Ana Cláudia Vaz de; http://lattes.cnpq.br/6861890992609511; http://lattes.cnpq.br/3246406733304902The competition between companies that work with production in general, forces them to implement improvements in their management and control systems, aiming to reduce losses in production processes. This work was developed in a pasta factory located in the city of Jaboatão dos Guararapes in Pernambuco. The objective of this work was to diagnose and reduce losses in a pasta production line. A survey of losses was made in a production line of Ninho noodles, for a period of six months. The cost of existing losses was estimated, and the responsible sector stipulated a 40% reduction in this cost in the line under study. A study of the operation of this line was carried out. It was found that the main sites for reprocessing were in the press, in the drying tunnel, in the wire mat and in the elevator belt. Thus, from the 5 whys tool, the root causes of the problem were obtained: wire and elevator belt. From the application of the PDCA cycle, the actions were successfully carried out with a reduction of 61% of the non-conformity of the Reprocessing in the Nest-type noodle line. This loss reduction in the four months of the project due to Reprocessing, generated an annual gain of 25.1 ton/year, which means an annual gain of R$ 115,290.00 for the company.Item Análise do processo adsortivo de corantes industriais por nanopartículas magnéticas de magnetita (Fe3O4)(2019-07-08) Cabral, Ariane Nathália de Siqueira Souza; Araújo, Ana Cláudia Vaz de; http://lattes.cnpq.br/6861890992609511; http://lattes.cnpq.br/3246406733304902Environmental degradation is an inevitable factor that accompanies the development of the population and unfortunately this has reached water systems, rivers and water sources. Among the agents that contribute to the contamination and degradation are the dyes from the textile and food industries that are discarded throughout the production processes. There are several methods being developed to eliminate the effluent dyes in rivers and springs, among which is the adsorption process. The magnetic nanoparticles of magnetite (Fe3O4) have been previously tested in the adsorption of dye residues from the textile and food industries. In this context, the objective of this work was to study the efficiency of magnetic nanoparticles of magnetite (NPs) in the adsorption process of some dyes present in industrial textile effluents, such as dyes, methyl orange (MEL) and methylene blue (AM) . A factorial design 2³ was established obtaining as factors studied time, pH and temperature, and for these factors its levels were analyzed. Analyzes were made for systems under ultrasound and under magnetic stirring, and for this, significant results were obtained for the two dyes. According to the results obtained for the ALM / NPs, factors such as time and pH with greater significance. It was observed that the most successful tests for adsorption were the tests 02 (11,362) and 06 (10,057), for the systems under ultrasound and under magnetic stirring, respectively. For the AM / NPs it was significant only the factor, time. The most favorable tests for the dye adsorption system were 04 (19,144) and 06 (21,457), for systems under ultrasound and under magnetic stirring, respectively.