EUBCE 2026 - Sebastian HUANGAL - Thermochemical Characterization and Caloric Value Prediction of Sugarcane Bagasse, Rice Husk and Coffee Husk Biomass

Thermochemical Characterization and Caloric Value Prediction of Sugarcane Bagasse, Rice Husk and Coffee Husk Biomass

Short Introductive summary

The use of agro-industrial waste as an alternative energy source contributes significantly to the reduction of greenhouse gas emissions. In this study, the higher heating value (HHV) of sugarcane bagasse, rice husks, and coffee husks was determined by validating eight predictive equations. Combustion parameters (fuel ratio, combustibility index, and volatile flammability) and gaseous emission factors (CO, CO2, CH4, NOx, SO2) were calculated. Coffee husks exhibited the highest HHV (18.51 MJ/kg) and carbon content (54.04%), followed by sugarcane bagasse (17.81 MJ/kg) and rice husks (15.40 MJ/kg). The fuel ratio ranged from 0.16 to 0.20, well below the critical threshold of 2.0, ensuring excellent ignition. The flammability index (108-119 MJ/kg) significantly exceeded the recommended minimum value of 23 MJ/kg. SO2 emissions were negligible due to the low sulfur content (0.005 kg/ton). Model validation revealed that Equation 5 exhibited the highest prediction accuracy (R² = 0.984, RMSE = 0.169 MJ/kg), followed by Equation 4 (R² = 0.965, RMSE = 0.249 MJ/kg). All three residues showed favorable properties for thermochemical conversion, with Equation 5 being the most suitable.

S. Huangal, National University Pedro Ruiz Gallo, Lambayeque, PERU
C.S. Carlos, National University Pedro Ruiz Gallo, Lambayeque, PERU
A.L. Cerna, National University Pedro Ruiz Gallo, Lambayeque, PERU
M.C. Vivas, National University of Engineering, Lima, PERU
J.A. Llontop, National University Pedro Ruiz Gallo, Lambayeque, PERU
L. Cordova, The National Intercultural University Fabiola Salazar Leguía de Bagua, PERU
A.P. Barturen, National University Pedro Ruiz Gallo, Lambayeque, PERU
S.A. Vasquez, National University Pedro Ruiz Gallo, Lambayeque, PERU