Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units

María González Martínez (Corresponding Author), Capucine Dupont, Denilson da Silva Perez, Luis Míguez-Rodríguez, Maguelone Grateau, Sébastien Thiéry, Tarja Tamminen, Xuân Mi Meyer, Christophe Gourdon

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Several types of shrubs and oak inducing high wildland fire risk in the South of Europe were evaluated for their potential valorization through torrefaction. Biomasses were firstly characterized in terms of macromolecular and elemental composition. Lab-scale TGA-GC/MS torrefaction experiments allowed the in-depth study of the solid mass transformation and the production profile of 23 volatile species (200 to 300 °C at 3 °C·min −1 and 300 °C for 30 min). The proportion of the torrefied products (solid, CO, CO 2 , water and volatile species) was evaluated through mass balance in a lab-scale furnace under typical torrefaction conditions (300 °C, 40 min). The results show a similar characterization and behavior in torrefaction for oak and shrublands, and slightly different characteristics for fern. However, fern may grow separately from shrublands and is considered to present a low fire risk. This suggests that the in-situ direct valorization of these biomasses through torrefaction mobile units seems promising. However, other properties, such as density, flowability and grindability need to be studied to confirm the feasibility of the process. Regarding torrefaction products, a higher carbon content and an interesting increase in heating value were measured for the torrefied solid, which makes it suitable for energetic valorization, among other uses. The composition of permanent gases was evaluated and found in agreement with previous studies. Finally, the volatile species released were studied in function of the torrefaction temperature, in view of their possible valorization as green chemicals.

Original languageEnglish
Pages (from-to)551-560
Number of pages10
JournalJournal of Environmental Management
Volume236
DOIs
Publication statusPublished - 15 Apr 2019
MoE publication typeNot Eligible

Fingerprint

Fires
shrub
shrubland
fern
Biomass
biomass
Chemical analysis
mass balance
Furnaces
energetics
heating
Heating
Carbon
carbon
Gases
gas
Europe
Water
experiment
temperature

Keywords

  • Oak
  • Shrubs
  • Solid mass loss
  • Torrefaction
  • Volatile species
  • Wildland fire

Cite this

González Martínez, M., Dupont, C., da Silva Perez, D., Míguez-Rodríguez, L., Grateau, M., Thiéry, S., ... Gourdon, C. (2019). Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units. Journal of Environmental Management, 236, 551-560. https://doi.org/10.1016/j.jenvman.2019.02.019
González Martínez, María ; Dupont, Capucine ; da Silva Perez, Denilson ; Míguez-Rodríguez, Luis ; Grateau, Maguelone ; Thiéry, Sébastien ; Tamminen, Tarja ; Meyer, Xuân Mi ; Gourdon, Christophe. / Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units. In: Journal of Environmental Management. 2019 ; Vol. 236. pp. 551-560.
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abstract = "Several types of shrubs and oak inducing high wildland fire risk in the South of Europe were evaluated for their potential valorization through torrefaction. Biomasses were firstly characterized in terms of macromolecular and elemental composition. Lab-scale TGA-GC/MS torrefaction experiments allowed the in-depth study of the solid mass transformation and the production profile of 23 volatile species (200 to 300 °C at 3 °C·min −1 and 300 °C for 30 min). The proportion of the torrefied products (solid, CO, CO 2 , water and volatile species) was evaluated through mass balance in a lab-scale furnace under typical torrefaction conditions (300 °C, 40 min). The results show a similar characterization and behavior in torrefaction for oak and shrublands, and slightly different characteristics for fern. However, fern may grow separately from shrublands and is considered to present a low fire risk. This suggests that the in-situ direct valorization of these biomasses through torrefaction mobile units seems promising. However, other properties, such as density, flowability and grindability need to be studied to confirm the feasibility of the process. Regarding torrefaction products, a higher carbon content and an interesting increase in heating value were measured for the torrefied solid, which makes it suitable for energetic valorization, among other uses. The composition of permanent gases was evaluated and found in agreement with previous studies. Finally, the volatile species released were studied in function of the torrefaction temperature, in view of their possible valorization as green chemicals.",
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González Martínez, M, Dupont, C, da Silva Perez, D, Míguez-Rodríguez, L, Grateau, M, Thiéry, S, Tamminen, T, Meyer, XM & Gourdon, C 2019, 'Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units', Journal of Environmental Management, vol. 236, pp. 551-560. https://doi.org/10.1016/j.jenvman.2019.02.019

Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units. / González Martínez, María (Corresponding Author); Dupont, Capucine; da Silva Perez, Denilson; Míguez-Rodríguez, Luis; Grateau, Maguelone; Thiéry, Sébastien; Tamminen, Tarja; Meyer, Xuân Mi; Gourdon, Christophe.

In: Journal of Environmental Management, Vol. 236, 15.04.2019, p. 551-560.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Assessing the suitability of recovering shrub biowaste involved in wildland fires in the South of Europe through torrefaction mobile units

AU - González Martínez, María

AU - Dupont, Capucine

AU - da Silva Perez, Denilson

AU - Míguez-Rodríguez, Luis

AU - Grateau, Maguelone

AU - Thiéry, Sébastien

AU - Tamminen, Tarja

AU - Meyer, Xuân Mi

AU - Gourdon, Christophe

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AB - Several types of shrubs and oak inducing high wildland fire risk in the South of Europe were evaluated for their potential valorization through torrefaction. Biomasses were firstly characterized in terms of macromolecular and elemental composition. Lab-scale TGA-GC/MS torrefaction experiments allowed the in-depth study of the solid mass transformation and the production profile of 23 volatile species (200 to 300 °C at 3 °C·min −1 and 300 °C for 30 min). The proportion of the torrefied products (solid, CO, CO 2 , water and volatile species) was evaluated through mass balance in a lab-scale furnace under typical torrefaction conditions (300 °C, 40 min). The results show a similar characterization and behavior in torrefaction for oak and shrublands, and slightly different characteristics for fern. However, fern may grow separately from shrublands and is considered to present a low fire risk. This suggests that the in-situ direct valorization of these biomasses through torrefaction mobile units seems promising. However, other properties, such as density, flowability and grindability need to be studied to confirm the feasibility of the process. Regarding torrefaction products, a higher carbon content and an interesting increase in heating value were measured for the torrefied solid, which makes it suitable for energetic valorization, among other uses. The composition of permanent gases was evaluated and found in agreement with previous studies. Finally, the volatile species released were studied in function of the torrefaction temperature, in view of their possible valorization as green chemicals.

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