Influence of physical-anatomical wood variables on charcoal physical–mechanical properties

et al. 2022

Preprint

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This paper aimed to evaluate the quality of wood and charcoal of Astronium fraxinifolium and Enterolobium gummiferum from Brazilian savannas (Cerrado). Discs from three trees of each species were removed at a height of 1.30 m above ground level. The samples were prepared for the analysis of the energy density and chemical components of the wood and for the production of charcoal at two final carbonization temperatures (350 and 450 ºC). After characterizing the charcoal, the carbonization yield and charcoal productivity per unit of wood volume were calculated. The wood of native species had potential for energy purposes. E. gummiferum charcoal stood out for its low ash content, and A. fraxinifolium wood presented higher apparent density and, consequently, higher carbonization yield and charcoal productivity per unit of wood volume. Charcoals produced at the two final carbonization temperatures presented adequate parameters for the steel industry and domestic use. The final temperature of 350 ºC is indicated as it presents higher gravimetric yield and energy yield of carbonization.

Section: Wood Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wood quality of Astronium fraxinifolium and Enterolobium gummiferum for charcoal production

et al. 2022

Preprint

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“…For charcoal production, A. fraxinifolium, E. gummiferum, and P. reticulata are within the average required by the sector (> 500 kg m -3 ) (Protásio et al, 2021). P. reticulata wood stands out since the higher the wood density, the higher the density and mechanical strength of the charcoal produced (Pereira et al, 2012;Couto et al, 2022). As for the pulp and paper industry, only E. gummiferum wood is within the required average (400 to 550 kg m -3 ).…”

Section: Basic Density and Fiber Dimensionsmentioning

confidence: 99%

“…It is also associated with other wood characteristics, such as contraction, swelling, and mechanical resistance of pieces (Schulgasser & Witztum, 2015;Amer et al, 2021;Gonya et al, 2021). Moreover, density influences the production and quality of charcoal (Zanuncio et al, 2013;Silva et al, 2020;Couto et al, 2022), as well as operational costs regarding transport and storage (Pereyra et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Fiber quality and wood basic density of species of the Savannah for productive purposes

et al. 2022

RSD

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The objective of this study was to qualify the wood of the species Astronium fraxinifolium, Enterolobium gummiferum, Eriotheca pentaphylla, and Plathymenia reticulata of the Brazilian Cerrado for forestry productive purposes based on the classification of their wood basic density and fiber quality indices. Discs were removed at a height of 1.3 m from the ground, and opposing wedges were obtained. The analyzed parameters were: wood basic density, fiber dimension, and fiber quality indices. The wood basic density was negatively correlated with fiber length and thickness. E. pentaphylla presented low basic density, long fiber length, and greater fiber wall thickness. On the other hand, A. fraxinifolium, E. gummiferum, and P. reticulata woods presented medium/high basic density, short fiber length, and quality indices that foster them for energy purposes, paper production, and use in floors and civil construction.

“…The charcoal quality also depends on the characteristics of the wood, which influence the quality and yield of charcoal (Assis et al 2016). Given that the properties of hardwoods impact the yield of charcoal and its physical, chemical, and mechanical properties (Dufourny et al 2019;Couto et al 2022), research on the quality of native wood for energy purposes is necessary. Brazilian Savannah is the second-largest biome in Brazil and is noted for its high number of tree species and biomass production.…”

Section: Introductionmentioning

confidence: 99%

Energy characterization of wood and charcoal from Savannah forest species

et al. 2023

BioRes

The objective of this study was to evaluate the energy potential of Astronium fraxinifolium and Enterolobium gummiferum wood species that grow in the Savannah of Minas Gerais, Brazil, focusing on the production of charcoal. Two discs were removed at 1.30 m from the ground of three trees of each species, and these were later sampled into wedges that were applied in the analysis of wood characteristics and charcoal production in a muffle furnace. The extractives content and basic density of the wood species were determined, and apparent density of charcoal, ash content, heating value, and energy density of both materials were also determined. The woods under study have potential for application in energy production. Emphasis was placed on A. fraxinifolium, which presented wood and charcoal that was denser, had higher energy density, and achieved greater gravimetric yield.