TCC - Engenharia de Materiais (UACSA)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2914
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Item Adsorção do preto reativo 5 a partir das cinzas do bagaço da cana-de-açúcar(2024-08-02) Souza, Ellen Cristovão de; Freitas, Jucleiton José Rufino de; http://lattes.cnpq.br/5437959745507297; http://lattes.cnpq.br/5321037256511207Water is essential for humanity, but in the Brazilian Northeast there is a serious socio-environmental problem due to poor distribution and low water availability, aggravated by the expansion of agribusiness and contamination of water sources. Industrial pollution is a major problem, especially in the textile sector, which uses toxic dyes that are difficult to remove, such as Reactive Black 5 (RB5), widely used in the textile industry, is a toxic, mutagenic and carcinogenic dye. To mitigate the damage, nanotechnology, which manipulates materials on a nanometric scale, offers promising solutions. Adsorption is an efficient method for treating effluents, standing out for its ease and simplicity. Among adsorbents, such as zeolites, minerals with high adsorption capacity, are promising for removing contaminants. The study focuses on the synthesis of zeolites from sugarcane bagasse ash, supplied by the Olho D’Água plant (Camutanga-PE). The ash was prepared, dried and characterized, and the silica was extracted by thermal and chemical methods. The synthesized zeolites were tested for adsorption of the RB5 dye, demonstrating high efficiency in dye removal in adsorption tests with different masses and interaction times. The adsorption process proved to be effective and economical for the treatment of water contaminated by textile dyes, with positive results when using chemically treated ash. New tests indicated that, even with less ash, the decolorization efficiency was high. Adsorption, therefore, represents a viable and low-cost solution for the remediation of contaminated water.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.