Mapping and energy analysis of Brazilian bioenergy power potential for three agricultural biomass byproducts

Abstract

Brazil is a country with extensive agricultural production and a prolific exporter of agricultural commodities. Massive harvests lead to considerable biomass waste generation, all of which represents a significant energy generating potential that could be better utilized. Currently, most bioelectricity production in Brazil is derived from sugar cane bagasse. With the aim of contributing to Brazilian bioenergy initiatives and development, this study assesses the potential for electrical energy generation from three agricultural byproducts generated in large quantities: rice straw, sugar cane straw, and coffee husks. The investigation for bioenergy potential determination was carried out considering the direct combustion of 100% of these materials in every Brazilian municipality that registers rice, sugar cane or coffee cultures. Statistical analysis and potential maps were constructed using these data. The results revealed a total generated potential of 15 GW (105.1 TWh/y) from these three residues, with around 90% originating from sugar cane. The southeast region showed the greatest potential for sugar cane and coffee cultivation, while the most significant potential for rice cultivation is mainly located throughout the South and Central-West regions of the country.