Estudo de caso: viabilidade de implantação de biodigestor no Instituto João XXIII na cidade de Ponta Grossa/PR
Based on the imminent reality of the diversification from the Brazilian energy sources, it is extremely necessary the application of projects and investments on researches, which can promote technologies concerned with economic aspects, but mostly guided by social and environmental aspects. In this...
| Autor principal: | Fritz Junior, Denilton da Conceição |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/16515 |
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| Resumo: |
Based on the imminent reality of the diversification from the Brazilian energy sources, it is extremely necessary the application of projects and investments on researches, which can promote technologies concerned with economic aspects, but mostly guided by social and environmental aspects. In this context, this study evaluated the technical and economic feasibility for the implementation of a digester for production of biogas, using waste derived from cattle in a rural property of the João XXIII Institute, located in the city of Ponta Grossa, state of Parana. This analysis is based on the characterization of the critic’s parameters of the manure, type of digester and the sizing of the equipment, in addition to the significant financial return of investment in energy coming from the agricultural waste in medium and long term. The characterization of raw materials, indicated better results using water/manure ratio minimum of 1/1 (mass x mass), with data average of pH of 7.10; total alkalinity of 3034.84 mgCaCO3/L; ratio of total solids of 13.44%; ratio of volatile solids of 79.58% and an analysis by spectroscopy of molecular absorption UV of the manure presented an average of COD = 67,500 mg / L and BOD = 32250 mg/L. The average projections of the production found resulted in 608,7m3 / month of biogas. In terms of conversion of the existing demand of liquefied petroleum gas (LPG) in the property, the production can supply the LPG consumption of the kitchen from the cafeteria and from the bakery, resulting in annual savings of about R$ 15,923.59. Furthermore, it can also supply partial or totally other energy demands existing in the Institute from the excess from the biogas supply. The evaluation of three distinct scenarios comparing to the influence of the financial returns from the sale of biofertilizer, indicated a better feasibility in the moderate scenario, where the sale is 50% of the biofertilizer produced, resulting in a TIR of 47.80%; VPL of R$ 83,902.19; simple payback of 2 years and 4 months and discounted payback of 2 years and 9 months. |
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