Abstract
ABSTRACT Faced with the increasing demand for renewable energy, researchers have developed several ways to generate them, such as biogas. Thus, the present study aims to demonstrate the economic viability of electricity generation from biodigesters in a pig farm to contribute to sustainable development by reducing pollution in the environment. Studies focused on biomass derived from pig waste are still scarce. Moreover, one of the motivations of the present study is the fact that Brazil is a major producer and exporter of pig meat, with most of the production taking place in the south and southeast regions. The methodology used is defined as exploratory, descriptive, explanatory, and applied. The scientific procedures were documentary and bibliographic research, case study, and cost analysis. An economic management model was developed using financial management instruments such as cash flow, internal rate of return, and simple and discounted payback, confirming the economic viability of the investment made for generating energy from animal biomass produced in a pig farm located in the interior of Rio Grande do Sul.
Highlights
In recent years, globally, much has been said about renewable energies and waste utilization in the production of electricity
Real information and classical and current works were used in the development of this work, with a detailed investigation of the instruments and mechanisms of the biodigesters used in the pig farm and the impact caused by the use of this renewable energy system
The present study shows the economic viability of using biogas as a source of electrical energy from a pig farm, complementing the former study
Summary
Much has been said about renewable energies and waste utilization in the production of electricity. Only few studies addressed the resulting economic values and management of small investments in rural properties. Some studies that investigated production and waste, such as the report of the Brazilian Association of the Producing and Exporting Industry of Pig Meat (ABIPECS, 2016), showed that pig production decreased from 2.362.374 heads in 2007 to 2.100.301 heads in 2015. The domestic market represents 84.8% of the destination, while exports represent 15.2%. The export indices of meat, cuts, offal, leather, and skin increased from 2.556 in 2000 to 3.643 thousand/ton in 2015, which corresponds to an increase of 42.53%. The southern region of the country accounts for 69.56% of the total exports. The State of Rio Grande do Sul occupies the third position at 20.69%
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