Study of light, middle and severe torrefaction and effects of extractives and chemical compositions on torrefaction process by thermogravimetric analysis in five fast-growing plantations of Costa Rica

Moya, Róger; Rodríguez-Zúñiga, Ana; Puente‐Urbina, Allen; Gaitán-Álvarez, Johanna

doi:10.1016/j.energy.2018.02.049

Cited by 24 publications

(13 citation statements)

References 33 publications

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“…Extractives, ash and other minor components, such as proteins and lipids, were not considered in this study. The low volatilization temperature of most of the extractives suggests a probable release below 200 • C (Lauberts et al, 2018;Moya et al, 2018). In the case of ash, some studies pointed the influence of inorganic elements in biomass thermal degradation (Macedo et al, 2018;Zhang et al, 2018).…”

Section: Biomass Main Macromolecular Components: Thermal Degradationmentioning

confidence: 99%

Torrefaction of cellulose, hemicelluloses and lignin extracted from woody and agricultural biomass in TGA-GC/MS: Linking production profiles of volatile species to biomass type and macromolecular composition

Couce

Dupont

Perez³

et al. 2022

Industrial Crops and Products

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Section: Biomass Main Macromolecular Components: Thermal Degradationmentioning

confidence: 99%

Torrefaction of cellulose, hemicelluloses and lignin extracted from woody and agricultural biomass in TGA-GC/MS: Linking production profiles of volatile species to biomass type and macromolecular composition

Couce

Dupont

Perez³

et al. 2022

Industrial Crops and Products

View full text Add to dashboard Cite

“…The influence of extractives and ash present in biomass still remains controversial in the torrefaction temperature range [8e10]. While extractives are supposed to be mostly released below 200 C [11,12], inorganic elements might catalyze thermochemical conversion, but rather at higher temperatures corresponding to pyrolysis or under gasification conditions [13e15].…”

Section: Introductionmentioning

confidence: 99%

Understanding the torrefaction of woody and agricultural biomasses through their extracted macromolecular components. Part 2: Torrefaction model

Dupont

Anca-Couce

Perez³

et al. 2020

Energy

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A new torrefaction model was proposed for predicting solid mass loss in torrefaction as a function of biomass main macromolecular composition and type, as well as on the operating conditions. To do this, solid degradation kinetics were modelled following a 2-successive reaction scheme for each macrocompound and the additive modelling approach through biomass macromolecular component behavior in torrefaction proposed by . The use of extracted fractions from different woody and agricultural biomass species (ash-wood, beech, miscanthus, pine and wheat straw) instead of commercial compounds increased the accuracy of the prediction of solid kinetics in biomass torrefaction. The validation of the proposed model with 9 raw biomasses in torrefaction showed an accurate prediction for woods, while the prediction for agricultural biomasses was acceptable.

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“…However, their influence in biomass degradation through torrefaction was still not fully elucidated. In the case of extractives, most of the species present lower volatilization temperatures suggesting a probable release below 200 C [31,32]. The impact of ash on biomass thermal decomposition was clearly identified at pyrolysis [33,34] and gasification temperatures [35,36].…”

Section: Introductionmentioning

confidence: 96%

Understanding the torrefaction of woody and agricultural biomasses through their extracted macromolecular components. Part 1: Experimental thermogravimetric solid mass loss

Dupont

Perez²,

Mortha

et al. 2020

Energy

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The behavior of biomass in torrefaction is determined by that of its macromolecular components, as well as by the biomass type. However, up to now, commercial compounds were typically used for modelling biomass torrefaction. This work proposes to assess the behavior of cellulose, hemicelluloses and lignin in torrefaction through extracted fractions directly isolated from woody and agricultural biomasses (ashwood, beech, miscanthus, pine and wheat straw) thanks to an optimized extraction procedure. The solid kinetics of these extracted fractions were analyzed through thermogravimetric analysis (TGA) in chemical regime conditions (200e300 C at 3 C$min À1 followed by 30 min at 300 C). These experiments highlighted the influence of the biomass type and the sugar composition in the degradation of the polysaccharide fractions in torrefaction, particularly for hemicelluloses. Furthermore, the degree of preservation of the native structure of the macromolecular components, when extracting them from biomass, seems also having an impact their behavior, especially for cellulose. The comparison of the torrefaction solid kinetic profiles of these extracted fractions, dependent on the biomass type, to that of commercial compounds from previous studies suggest that these extracted fractions would be more suitable for biomass torrefaction modelling.

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Study of light, middle and severe torrefaction and effects of extractives and chemical compositions on torrefaction process by thermogravimetric analysis in five fast-growing plantations of Costa Rica

Cited by 24 publications

References 33 publications

Torrefaction of cellulose, hemicelluloses and lignin extracted from woody and agricultural biomass in TGA-GC/MS: Linking production profiles of volatile species to biomass type and macromolecular composition

Torrefaction of cellulose, hemicelluloses and lignin extracted from woody and agricultural biomass in TGA-GC/MS: Linking production profiles of volatile species to biomass type and macromolecular composition

Understanding the torrefaction of woody and agricultural biomasses through their extracted macromolecular components. Part 2: Torrefaction model

Understanding the torrefaction of woody and agricultural biomasses through their extracted macromolecular components. Part 1: Experimental thermogravimetric solid mass loss

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