https://repositorio.ufpb.br/jspui/handle/123456789/2405 2026-05-02T08:04:30Z https://repositorio.ufpb.br/jspui/handle/123456789/37983 Título: Caracterização e gestão de resíduos sólidos na produção cervejeira: potencial de reaproveitamento do bagaço de malte Autor(es): Souza, Alicia Maria Florencio de Orientador: Vieira Segundo, José Etimógenes Duarte Abstract: The expansion of the Brazilian craft brewing sector has intensified the need for systematic analysis of solid waste generated throughout the production process, particularly in light of contemporary sustainability and environmental management requirements. This study aimed to analyze the solid waste generated during beer production in a microbrewery located in the metropolitan region of João Pessoa, Paraíba, identifying its characteristics, management practices, and valorization potential. A qualitative, exploratory, and descriptive case study approach was adopted, combining direct observation, semi-structured interviews, document analysis, and bibliographic review in scientific databases such as Scientific Electronic Library Online (SciELO), Scopus, ScienceDirect, and the CAPES Periodicals Portal (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior). The results indicated an estimated annual generation of approximately 33.2 tons of brewer’s spent grain and 1.5 tons of trub, with an average index of 0.23 kg of spent grain per liter produced, consistent with international technical parameters. The spent grain is fully allocated to animal feed, a practice aligned with the hierarchy established by the Brazilian National Solid Waste Policy (Law No. 12,305/2010), preventing landfill disposal and potential methane generation under anaerobic conditions. The analysis further demonstrated that both spent grain and trub present organic compositions with technological and nutritional valorization potential, although such possibilities are not yet fully explored by the company. It is concluded that current management practices demonstrate initial alignment with circular economy principles; however, consolidation of quantitative environmental indicators, systematic documentation, and enhanced monitoring of trub are required to strengthen the environmental maturity of the enterprise. Editor: Universidade Federal da Paraíba Tipo: TCC 2026-03-26T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37982 Título: Rotas tecnológicas para produção de combustíveis sustentáveis de aviação a partir da energia verde da cana-de-açúcar Autor(es): Prazeres, Gabriel da Silva Marques Dos Orientador: Silva, Flavio Luiz Honorato da Abstract: Air transport plays a strategic role in global mobility of people and goods and relies on different types of aircraft engines that predominantly use fossil-based aviation kerosene. This dependence contributes to greenhouse gas emissions and represents a major environmental challenge for the aviation sector. In this context, Sustainable Aviation Fuels (SAF) have emerged as an alternative to reduce emissions while maintaining compatibility with existing infrastructure and propulsion systems. Therefore, this study aimed to conduct a bibliographic review of technological pathways for SAF production from renewable feedstocks, highlighting the potential of sugarcane in the Brazilian context. The study addresses conversion routes such as Alcohol-to-Jet (ATJ), responsible for producing hydrocarbons such as Synthetic Paraffinic Kerosene (SPK), as well as processes aimed at obtaining Synthetic Iso-Paraffins (SIP), emphasizing their compatibility with conventional aviation fuel. The results indicate that the sugar-energy sector presents significant potential for SAF production due to the wide availability of feedstock, high agricultural productivity, and a well-established biofuel industry infrastructure. Thus, the development of these technological pathways may contribute to the decarbonization of aviation and to the expansion of renewable fuels in the air transport sector. Editor: Universidade Federal da Paraíba Tipo: TCC 2026-05-18T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37893 Título: Secagem em camada de espuma de folhas de kalanchoe laetivirens: testes preliminares para definição de parâmetros Autor(es): Muniz, Larissa Oliveira Orientador: Cavalcante, Josilene de Assis Abstract: Kalanchoe laetivirens, popularly known as aranto, has attracted scientific interest due to the presence of bioactive compounds associated with various pharmacological activities. However, the high moisture content of its leaves hinders preservation, making it necessary to apply processing techniques that enhance stability and facilitate its use. In this context, foam-mat drying stands out as an efficient alternative for dehydrating liquid or pasty plant materials, as it increases the contact surface area with the drying air, thereby reducing processing time. Thus, the aim of this study was to evaluate the feasibility of foam-mat drying of Kalanchoe laetivirens leaves, focusing on defining suitable parameters for foam formation and analyzing the influence of temperature on the drying process. Initially, experiments were carried out to characterize the foam by evaluating parameters such as density, expansion (overrun), and stability, using the foaming agent Emustab under different experimental conditions (variations in juice dilution, emulsifier concentration, and whipping time). Based on the results, experiment 7 was identified as the most suitable condition, corresponding to lower juice dilution, higher emulsifier concentration, and longer whipping time, which resulted in lower density, higher air incorporation, and greater foam stability. Subsequently, the foam obtained under the selected conditions was subjected to drying at different temperatures (50 °C, 60 °C, and 70 °C) in order to evaluate the influence of this variable on the material behavior during the process. The results indicated that 60 °C presented the best performance among the evaluated conditions, providing lower water activity, higher titratable acidity, and absence of significant structural changes, such as cracks in the dried layer, in addition to reduced indications of thermal degradation. Therefore, foam-mat drying proved to be a promising technique for dehydrating Kalanchoe laetivirens leaves, contributing to the production of a more stable powder with potential for future applications. Editor: Universidade Federal da Paraíba Tipo: TCC 2026-03-20T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37892 Título: Análise funcional da bactéria tb3 isolada da rizosfera do tamboril (Enterolobium contortisiliquum) e avaliação do potencial como bioinsumo agrícola Autor(es): Galvão, Izabella Lins Orientador: Santos, Sharline Florentino de Melo Abstract: Rhizobacteria are microorganisms that colonize the rhizosphere and provide beneficial effects to plants through different mechanisms, such as phytohormone synthesis, mineral solubilization, nitrogen fixation, and enhanced nutrient uptake. The use of microbial inoculants has gained prominence in recent decades for strengthening the biological component of production systems, reducing dependence on synthetic fertilizers, and contributing to agricultural sustainability. In this context, the present study aimed to confirm whether a bacterium isolated from the rhizosphere of Tamboril exhibits characteristics of a plant growth–promoting microorganism, as well as to evaluate its growth in a commercial medium and in alternative media formulated from watermelon products and by-products. The TB3 bacterium was characterized regarding its capacity for phosphate solubilization, biological nitrogen fixation, and production of indole-3-acetic acid (IAA). Subsequently, microbial growth kinetics were evaluated in nutrient broth and in an alternative medium based on watermelon juice, as well as the influence of pH, total reducing sugar concentration, and temperature on cell growth and IAA production. Cultivations were also performed with different concentrations of watermelon juice and in media formulated from the liquid and solid fractions of the fruit peel. The results indicated that TB3 presents functional characteristics compatible with plant growth–promoting microorganisms, in addition to satisfactory growth in alternative media formulated with watermelon juice and peel. The use of watermelon residue proved to be viable for bacterial cultivation, demonstrating potential for cost reduction and reuse of agro-industrial residues. Bioinoculant assays showed positive effects on the initial development of plants, especially when the application occurred after germination. Therefore, this study highlights the potential of the TB3 bacterium for use as an agricultural bioinoculant associated with sustainable strategies for the valorization of plant residues. Editor: Universidade Federal da Paraíba Tipo: TCC 2026-03-09T00:00:00Z