Viabilidade econômica para produção de energia elétrica por biodigestores utilizando resíduos pecuários

Abstract

Energy consumption in a country depends on a varied and complex set, ranging from achieving the balance between energy use and environmental preservation, to the development of the economy. The present work had the objective of verifying the economic viability of the implantation of biodigesters for electric power generation using the biogas generated from cattle, swine and poultry cattle residues. Technical, economic and environmental aspects were analyzed. In the technical feasibility was discussed the possibility of using biogas to generate electric energy using a generator bike of different capacities of specific consumption of biogas production. In the economic aspects the feasibility of the project was studied in giving conditions to supply a certain rural property besides the possibility of using the surplus. Another issue addressed was the use of the biofertilizer resulting from the residue of the fermentation process of these wastes that can be used in the property, serving to eliminate the use of pesticides and chemicals. The methodology addressed in this dissertation was divided into stages to identify the financial viability of the investment through payback, NPV and TIR with 300 head of animals per species, in the analysis of the results which produced a larger amount of biogas was the pigs, this due to the fact that they have a larger daily biogas production when compared to other species. It is worth mentioning that all species are promising and have the capacity to produce enough waste to produce biogas, it is up to the rural producer to analyze his financial capacity to invest and define the real need within his property. From the environmental point of view, it has contributed to the conservation of the environment, reduces GHG emissions, contributes to a better use of livestock waste and significantly increases the income of the rural producer.