Detailed identification and quantification of the condensable species released during torrefaction of lignocellulosic biomasses

Lê Thanh Kim, Commandre Jean-Michel, Valette Jérémy, Volle Ghislaine, Meyer Michel. 2015. Detailed identification and quantification of the condensable species released during torrefaction of lignocellulosic biomasses. Fuel Processing Technology, 139 : 226-235.

Quartile : Q1, Sujet : CHEMISTRY, APPLIED / Quartile : Q1, Sujet : ENGINEERING, CHEMICAL / Quartile : Q1, Sujet : ENERGY & FUELS

Résumé : Torrefaction is a mild thermal pretreatment which improves biomass properties and releases condensable species. Condensable species released during torrefaction of pine, ash wood, miscanthus and wheat straw at 250, 280 and 300 °C were investigated. A fixed-bed reactor was used for the laboratory scale experiments. A micro-GC, Karl Fischer titrator and GC-MS were used to analyse incondensable gases, water and other condensable species, respectively. The overall mass balance ranged from 96 to 103 wt.%. The quantification rate of condensable species was on average 77 wt.%. In addition to the major species usually reported in the literature – water, acetic acid, 2-propanone,1-hydroxy- – we show that large amounts of some anhydrosugars were produced. Additionally, 85 condensable species were identified. Among these species, many terpenes and terpenoids in pine were identified by adsorption on SPME fibre. Finally, the influence of temperature and of the nature of biomass on the yields of condensable species was highlighted.

Mots-clés Agrovoc : biomasse, torréfaction, Pinus, Fraxinus, Miscanthus, paille de blé, température, propriété physicochimique, composition chimique, productivité, terpénoïde

Classification Agris : P06 - Sources d'énergie renouvelable
K50 - Technologie des produits forestiers

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

• Lê Thanh Kim, CIRAD-PERSYST-UPR BioWooEB (FRA)
• Commandre Jean-Michel, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0001-9094-7879
• Valette Jérémy, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0009-0000-3371-6417
• Volle Ghislaine, CIRAD-PERSYST-UPR BioWooEB (FRA)
• Meyer Michel, Université Toulouse 1 Capitole (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577417/)

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