Pirólise e Co-Pirólise das Cascas de Pequi e Babaçu: Uma Abordagem Sustentável para o Aproveitamento de Resíduos

The use of agro-industrial residues as biomass for clean energy production has received prominence in view of the major environmental challenges. This study focused on investigating the potential of pequi peel flours (PPF) and babassu (BPF) as feedstocks in the pyrolysis process, evaluating the influence of temperature and biomass ratio on the quality of volatiles and the synergistic effect. The PPF and BPF were characterized and subjected to pyrolysis in the PPF:BPF ratios (1:0; 0:1) and 1:1 (co-pyrolysis), at temperatures of 550 and 750 °C. The highest hydrocarbon content, 21.48%, was obtained in the pyrolysis of PPF at 550 °C, an interesting condition for biofuel production. Fine chemical compounds, such as furfural and 5-hydroxymethylfurfural (HMF), were detected in the chromatograms of PPF and BPF. Co-pyrolysis at 550 °C reduced the content of
oxygenated compounds compared to PPF pyrolysis from 51.26 to 42.21%, and showed a synergistic effect in levoglucosan formation, a relevant compound to the polymer and pharmaceutical industries. Overall, the findings demonstrate that PPF and BPF are promising biomass feedstocks for pyrolysis, with potential applications in both renewable energy and high-value chemical production.