Room: Poster Area
Date: Thursday, 21 May 2026
Time: 17:30 - 18:30 CEST
Session code 6CV.9
Carbon-based materials and applications
Revisiting Elemental Correlations for Biomass Calorific Value: The Case of Extractive-Rich Feedstocks
Short Introductive summary
This study investigates the prediction of calorific value (HHV) in lignocellulosic biomass with high extractive content using Caryocar brasiliense (pequi) seeds as a model feedstock. Two biomass types were evaluated: raw feedstock containing extractives and de-extracted biomass obtained after solvent removal. Both materials were torrefied at 250 °C and 300 °C for residence times between 10 and 60 minutes under nitrogen atmosphere. The results showed that conventional elemental correlations underestimate the HHV of extractive-rich biomasses by 3 to 5 MJ kg?¹, while the new empirical correlation developed in this work reproduced experimental calorimetric data with mean deviations below 1 MJ kg?¹. The study refines the empirical basis for predicting bioenergy potential and supports the future integration of data-driven and AI-assisted models for optimizing torrefaction performance of tropical feedstocks.
Presenter
Edgar A. SILVEIRA
University of Brasilia, Mechanical Engineering Dpt., BRAZIL
Presenter's biography
PhD in Mechanical Sciences from the University of Brasilia (UNB-Brazil) and in Fiber and Wood Sciences from the University of Lorraine (France). Professor at UNB, Silveira is engaged with biomass energy, waste management, thermochemical conversion technologies, heat transfer and energy systems.
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
L.A. Macedo, Forest Products Laboratory, Brasilia, BRAZIL
B.S. Chaves, Forest Products Laboratory, Brasilia, BRAZIL
L.G. Galvão, Forest Products Laboratory, Brasilia, BRAZIL
F.W.C. Andrade, Forest Products Laboratory, Brasilia, BRAZIL
G.F. Ghesti, University of Brasilia, BRAZIL
T.P. Protásio, UnFederal University of Lavrasiversity of Brasilia, BRAZIL
E.A. Silveira, University of Brasilia, BRAZIL
Session reference: 6CV.9.11