Emissões gasosas provenientes da combustão de fibras vegetais contaminadas com efluente de estação de tratamento de esgoto sanitário

• Autor(a) principal: Maliski, Denise
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório do Centro Universitário Braz Cubas
• Texto Completo: https://repositorio.cruzeirodosul.edu.br/handle/123456789/1846
• topic: Gestão ambiental; Gases; Combustão; Biomassa; CNPQ::CIENCIAS BIOLOGICAS; CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA

The aim of this work was to analyze the gaseous emissions released in the combustion of vegetable filters containing sugarcane bagasse and coconut fiber contaminated with sanitary sewage treatment effluent and to determine the calorific value of contaminated vegetable filters in the production of energy as biomass. To evaluate the evolved gases, thermogravimetric analyzes coupled to the infrared (TG-FTIR) and coupled to the mass spectrometer (TG-MS) were used. From these analyzes, it was possible to observe the release of CO2, CO, CH3OH, CH3COOH and water vapor by the fibers without contaminants and fibers contaminated with effluent in the TG-FTIR and the release of water, HCN, CO, CO2, NO2 and CH3Cl by the non-contaminated fibers and fibers contaminated with effluent in TG-MS. The gaseous emissions of the fibers without contaminants and contaminated with effluent are the same, therefore, the release of other evolved gases in the thermal decomposition has not been identified. To determine the calorific value, an immediate analysis simulation was performed through the thermogravimetric curves and elemental analysis. The values obtained in the combustion of the control, flotation, RALF 1 and RALF 2 samples were compared to the values already established in the literature. It was observed that the values of calorific value of the samples analyzed in this work are higher than the values established in the literature; however, the average value of the present moisture content should be taken into account. The fibers contaminated with effluent sample from sanitary sewage treatment plant, after polishing with flotation, presented the highest calorific value, with the lowest moisture content. It can be inferred that there is the possibility of using the contaminated filters in the production of energy, without extra damage to the environment, since the quantity and quality of the emissions did not influence the production of energy from this contaminated material.