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Numerical modeling and experimental assessment of sustainable woody biomass torrefaction via coupled TG-FTIR

Silveira Edgar A., Luz Sandra, Leão Rosineide M., Rousset Patrick, Caldeira-Pires Armando. 2021. Numerical modeling and experimental assessment of sustainable woody biomass torrefaction via coupled TG-FTIR. Biomass and Bioenergy, 146:105981, 13 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Abstract : Torrefaction is an inert thermal process (up to 300 °C) that promotes changes in the chemical and physical properties of biomass, decreasing the time and energy required for biomass conversion. In this work, an online method - TG coupled with FTIR - and elemental analysis were applied to acquire data in order to perform an experimental and numerical thermal upgrading assessment of Eucalyptus grandis, and in turn study the torrefaction mechanism. A thermal sensitivity numerical model was employed to obtain two-step reaction kinetic rates and solid and volatile compositions. The FTIR results added new perceptions that correlate and validate the solid and volatile pseudo-component distribution, the solid elemental composition prediction, devolatilization, and solid HHV estimation. As a result, the 2D property mapping allowed for a qualitative and quantitative assessment of all torrefaction severities. The obtained kinetics and the response diagrams from the numerical results can provide valuable references for practical operations and reactor design.

Mots-clés Agrovoc : Eucalyptus grandis, densité du bois, Modélisation, Mesure, Torréfaction, Composition chimique, technique de prévision

Mots-clés géographiques Agrovoc : Brésil

Mots-clés libres : Eucalyptus grandis, Torrefaction, Coupled TG-FTIR, Numerical modeling, 2D prediction diagrams

Classification Agris : K50 - Processing of forest products

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Auteurs et affiliations

  • Silveira Edgar A., UNB [Universidade de Brasilia] (BRA) - auteur correspondant
  • Luz Sandra, UNB [Universidade de Brasilia] (BRA)
  • Leão Rosineide M., UNB [Universidade de Brasilia] (BRA)
  • Rousset Patrick, CIRAD-PERSYST-UPR BioWooEB (FRA)
  • Caldeira-Pires Armando, UNB [Universidade de Brasilia] (BRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/597529/)

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