Influence of torrefaction severity on wood blend from amazonian residues

Souto Normando P.B., Chaves Bruno Santana, Macedo Lucélia, Cruz Lamas Giulia, Barbosa Thais, Rodrigues Pedro Paulo de O., Rodrigues Cardoso Marcela, Rousset Patrick, Silveira Edgar A.. 2023. Influence of torrefaction severity on wood blend from amazonian residues. In : 31st European Biomass Conference and Exhibition. Florence : ETA, 215-220. (European Biomass Conference and Exhibition Proceedings, 31) ISBN 978-88-89407-23-3 European Biomass Conference and Exhibition (EUBCE 2023). 31, Bologna, Italie, 5 Juin 2023/8 Juin 2023.

Résumé : This study investigated and characterized the torrefaction treatment of Amazonian wood residues blend. Six wood residue materials from legal wood processing from the Jacundá National Forest (Rondônia, Brazil) were blended and torrefied at 225, 250 and 275 °C for 60min in an inert atmosphere (N2). The wood residues comprised Peltogyne lecointei (S1), Erisma uncinatum (S2), Martiodendron elatum (S3), Handroanthus incanus (S4), Dipteryx odorata (S5), and Allantoma decandra (S6). The solid yield (SY) and torrefaction severity index (TSI) were applied to evaluate the torrefaction process severity. The pyrolysis of torrefied biomass and chemical analysis (proximate, ultimate, and calorific) allowed to evaluate the influence of torrefaction severity on the blend. The preliminary results showed that torrefaction temperature highly affects the blended samples, with a weight loss of 4.9% for 225 °C and 34.96% for 275 °C torrefaction. A goodness of fit was achieved between the calculated TSI and volatile matter (R2 =0.99), fixed carbon (R2 =0.99), and ash contents (R2 =0.93). HHV showed an improvement of up to 7% for 275 °C torrefaction. The results provided valuable information to determine the process parameters for further torrefaction and pelletizing processes (TAP) aiming at fuel production in decentralized systems, reducing diesel dependence on the Amazon region.

Auteurs et affiliations

• Souto Normando P.B., IME (BRA)
• Chaves Bruno Santana, SFB (BRA)
• Macedo Lucélia, SFB (BRA)
• Cruz Lamas Giulia, UNB [Universidade de Brasilia] (BRA)
• Barbosa Thais, UNB [Universidade de Brasilia] (BRA)
• Rodrigues Pedro Paulo de O., UNB [Universidade de Brasilia] (BRA)
• Rodrigues Cardoso Marcela, UNB [Universidade de Brasilia] (BRA)
• Rousset Patrick, CIRAD-PERSYST-UPR BioWooEB (REU) ORCID: 0000-0002-6956-7465
• Silveira Edgar A., UNB [Universidade de Brasilia] (BRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610769/)

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