Avaliação da viabilidade energética do reaproveitamento de resíduos de lúpulo na geração de bioenergia

Abstract

The study held at IFG campus Inhumas-GO in the year 2025 evaluated the reuse of hop residues for bioenergy generation through pelletization with animal tallow. Hop residues obtained from microbreweries were collected, dried, and characterized in terms of moisture content, ash content, and Higher Heating Value (HHV). Five pellet formulations were prepared with different proportions of animal tallow (15%, 25%, 35%, 45%, and 55%). The results showed that the addition of tallow increased the HHV of the pellets, with Sample E (55% tallow) presenting the highest HHV (31.035 MJ/kg). However, Sample D (45% tallow) exhibited the best balance between energy yield, stability, and reduced ash formation. Pelletization with animal tallow proved to be an effective strategy for producing solid biofuels, reducing waste disposal while promoting renewable energy generation. This work represents a preliminary stage and provides the foundation for future studies aimed at consolidating the findings and optimizing bioenergy production from agro-industrial residues, with a particular focus on sustainability in the brewing sector.