Mestrado em Engenharia Ambiental e Sanitária (EEC)
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Navegando Mestrado em Engenharia Ambiental e Sanitária (EEC) por Por Área do CNPQ "ENGENHARIAS::ENGENHARIA SANITARIA::SANEAMENTO AMBIENTAL"
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Item Avaliação de soluções de manejo de águas pluviais baseadas na natureza em loteamento urbano(Universidade Federal de Goiás, 2023-10-25) Chagas, Isabela Moura; Basso, Raviel Eurico; http://lattes.cnpq.br/2827247646651873; Basso, Raviel Eurico; Formiga, Klebber Teodomiro Martins; Swarowsky, AlexandreWorldwide urban growth is continuous, accompanied by an increase in impermeable areas. This results in a reduction of evapotranspiration and water infiltration capacity into the soil, leading to increased surface runoff and negatively impacting the environment and public health. Currently, nature-based stormwater management solutions seek to mitigate these negative impacts of urbanization. This study aimed to determine, through a hydrological model, the performance of these solutions in an urban development with a high percentage of impermeable area. Considering the literature review, municipal regulations, and design criteria, green roofs and cisterns were selected as nature-based solutions to be modeled using the SWMM software. The research was conducted in five stages, including literature review and selection of nature-based solutions, selection of the study area, acquisition of secondary data, evaluation of the hydrological performance of the proposed scenarios, and assessment of the impact on the conventional drainage system. The performance evaluation included selecting SWMM variables, designing the drainage network, analyzing input data, scenario development (isolated and combined techniques), SWMM application, and analysis and comparison of results. Ten simulations were carried out with different scenarios, including the implementation of isolated and combined techniques and variations in the degree of soil impermeability. The research investigated the behavior of green roofs and found that their implementation alone reduced surface runoff by 15.5% and peak runoff by 19.7%. The isolated cistern also contributed, but to a lesser extent, with a reduction of 8.5% in surface runoff and 4.3% in peak runoff. However, the combination of the two solutions showed a more effective synergy, achieving a reduction of 20.2% in surface runoff and 22.2% in peak runoff. The results also confirmed that the degree of impermeability of the soil is inversely related to its capacity to infiltrate rainwater.Item Efeitos dos surfactantes na coagulação química de microplástico envelhecido por luz ultravioleta (UV)(Universidade Federal de Goiás, 2024-11-04) Costa, Jordana Fernandes; Teran, Francisco Javier Cuba; http://lattes.cnpq.br/3433455726987770; Teran, Francisco Javier Cuba; Ruggeri Júnior, Humberto Carlos; Mendes, Thiago AugustoMicroplastic is a polymer present in various materials used in everyday life, such as cosmetics and cleaning products. Due to its inadequate disposal, it is found in large quantities in natural and wastewater. Surfactants are mainly used to manufacture detergents and are considered one of the main pollutants found in sewage. Therefore, the main objective of this research is to identify how the surfactants LAS and Tween-20 influence the removal by chemical coagulation of aged microplastics by oxidation using UV light. Removal with the surfactant Tween-20 showed efficiency greater than 90%. The removal with LAS showed a removal of 56.15% for a concentration of 140 mg L-1 of surfactant, due to its anionic character and the system entering into electrostatic repulsion. The structure of the microplastic was characterized by presenting changes after oxidation and chemical coagulation with surfactants, through the reduction of transmittance in the waves presented in the FTIR, instability in the colloidal suspension presented by the PZ, reduction in the size of the colloidal particles and an increase in the aggregated particles sedimented, with greater irregularities and microporesItem Investigação do comportamento de sorção da atrazina em microplástico novo e envelhecido e avaliação de seu potencial fitotoxicológico(Universidade Federal de Goiás, 2025-02-20) Souza, Luan Gabriel Xavier de; Teran, Francisco Javier Cuba; http://lattes.cnpq.br/3433455726987770; Teran, Francisco Javier Cuba; Goes, Renato Jaqueto; Oliveira, Tatianne Ferreira deThe increasing presence of microplastics in aquatic environments and their interaction with emerging organic pollutants, such as atrazine, a widely used herbicide in agriculture, have raised concerns about ecological impacts. Atrazine can adsorb onto the surface of microplastics, increasing its persistence in the environment and elevating the risk of toxicity to aquatic organisms. This study investigated the sorption of atrazine onto new and aged polyethylene microplastics under two distinct conditions: distilled water (DW) and nutrient-enriched water for hydroponics (NE), simulating a eutrophic environment, assessing the adsorption capacity and phytotoxicological impacts on the germination of Lactuca sativa. The results revealed that aged microplastics (AMP) showed a higher adsorption capacity for atrazine under both conditions: 0.6460 mg/g (14.4917%) in DW and 0.7419 mg/g (15.8671%) in NE, compared to 0.4047 mg/g (9.0793%) and 0.5042 mg/g (10.7845%) for new microplastics (NMP), respectively. This greater adsorption capacity of AMP is likely due to surface modifications caused by photodegradation, such as increased roughness and the formation of oxygenated functional groups. Phytotoxicity assays demonstrated that atrazine adsorbed to AMP exerted an inhibitory effect on seed germination, with a maximum inhibition of 34% in the treatment with aged microplastic sorbed with atrazine at 2 mg/L, classifying the effluent as moderately toxic. This study highlights that the aging of microplastics increases their capacity to adsorb atrazine, amplifying the risks of toxicity in aquatic environments, especially under eutrophic conditions, and reinforces the need for further research on the impacts of the interaction between microplastics and pollutants in different aquatic ecosystems.Item Proposição de soluções de esgotamento sanitário em comunidades rurais do Estado de Goiás(Universidade Federal de Goiás, 2022-06-27) Vale, Gabrielle Brito do; Huggeri Júnior, Humberto Carlos; http://lattes.cnpq.br/1316502250729632; Scalize, Paulo Sérgio; http://lattes.cnpq.br/0957896448117207; Scalize, Paulo Sérgio; Tonetti, Adriano Luiz; Teran, Francisco Javier CubaSurveys show how sewage coverage in rural communities is mostly characterized by its precariousness or lack of solutions throughout Brazil, with rudimentary septic tanks being used in the State of Goiás by 60 to 80% of the rural population (BRASIL, 2019). This framework contributes to the emergence of environmental risks and to the health of populations. To improve this situation, according to article 3-B of Federal Law 14026 of July 15, 2020, which updates the legal framework for sanitation, individual and collective sewage services involve the treatment unit and the alternative management sludge, which must be disposed of in an environmentally appropriate manner, including septic tanks. These units are the most suitable alternatives currently used in rural areas, and are characterized by producing sludge, which when poorly managed harms the treatment and environment, making the study of its management relevant. Furthermore, solutions for sewage treatment can be applied according to the effluent generated in the rural household, and analysis of the possibility of integrating treatment with animal manure management and practiced agriculture. Thus, the objective of this work is to propose solutions for the treatment of sanitary sewage and sludge management in rural communities in the State of Goiás. To this end, a survey was carried out on the service in 113 communities in the State of Goiás, including riverside communities, quilombolas and settlements, diagnosed in the Environmental Sanitation and Health Project (SanRural). the need for animal manure for the technologies to work, or plantations for the application of the treated effluent, in order to allow its reuse in agriculture/plantations and the management of animal manure together with the treatment. Technological groups were elaborated for proposition, being: A and D (with restrictions only on the type of effluent), B (with planting and manure needs) and C (planting needs). For the sludge management solutions, individual management modalities (exclusively and shared) and collective management without analytical control and with (analysis of the quality of the effluent and receiving body) were considered, and how these would impact the operational and maintenance costs of tanks septic, varying the amount of population served from 20 to 2000 inhabitants. From the results, it was observed that the service in the communities was characterized by a high deficit in all typologies. The proposition of solutions indicated the greater applicability of the technologies of group A and D in all typologies. Those in group B were more applicable in settlements, where there is a greater presence of plantations and animal manure. In general, all propositions pointed to solutions that allow the adequate treatment of effluents, feces and urine, which can contribute to the promotion of environmental health. As for sludge management, based on the per capita costs of the solutions, it was identified that: shared individual management is more applicable in communities, and collective management can be favored in the absence of analytical control. Therefore, it is concluded that it is possible to apply several solutions for the treatment of sewage, which can contribute to agricultural production, environmental quality and management of animal manure. In general, shared individual management had the lowest cost, however, the participation of different sectors of society and public authorities is important.