Application of thermogravimetric analysis as a pre-selection tool for Eucalyptus spp.

Fialho, Lucas de Freitas; Carneiro, Angélica de Cássia Oliveira; Figueiró, Clarissa Gusmão; Carneiro, Antônio Policarpo Souza; Surdi, Paula Gabriella; Vital, Benedito Rocha; Magalhães, Mateus Alves de; Peres, Letícia Costa

doi:10.5039/agraria.v14i3a6363

Cited by 3 publications

(6 citation statements)

References 21 publications

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“…It was observed that in the range of 100 to 200°C there was no mass loss for the diff erent studied clones. This range is known as the wood thermal stability zone (Fialho et al, 2019). Yang et al (2007) studying the thermal degradation of wood constituents, observed hemicellulose weight loss occurring mainly at 220 -315°C and cellulose at 315 -400°C, similar to what was found in this study.…”

Section: Thermal Properties Of Woodsupporting

confidence: 87%

“…In fact, the mean value observed in the present study for the holocellulose content was 65.6%. Fialho et al (2019), in turn, found more intense degradation between 300 and 450°C. The less accentuated peak corresponds to the higher degradation rate of hemicelluloses, whose mean degradation range was from 222 to 297°C and is related to an average mass loss of 18% between 200 and 300°C.…”

Section: Thermal Properties Of Woodmentioning

confidence: 87%

“…Volatile matter may mean less effi ciency of charcoal as an iron ore reducer (Fialho et al, 2019). No signifi cant diff erence was observed between the clones for this property, whose mean was 25.5%.…”

Section: Gravimetric Yield and Charcoal Qualitymentioning

confidence: 88%

“…The high ash content can reduce the calorifi c value of charcoal, in addition to increasing blast furnace wear (Fialho et al, 2019). Clone C. torelliana x C. citriodora showed higher ash content (2.32%).…”

Section: Gravimetric Yield and Charcoal Qualitymentioning

confidence: 99%

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WOOD AND CHARCOAL QUALITY IN THE SELECTION OF Eucalyptus spp. CLONES AND Corymbia torelliana X Corymbia citriodora FOR STEEL INDUSTRY

Oliveira,

Carneiro,

Peres

et al. 2023

Rev. Árvore

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Wood from planted forests is the main input in the charcoal production chain. However, the heterogeneity of charcoal, in terms of its physical, chemical and mechanical properties, and the low yield in production processes is among the main problems faced by industries. To select the best clones for the production of charcoal for steelmaking, the objective of this work was to evaluate the properties of wood, in addition to the yield and quality of charcoal from different genotypes of Eucalyptus and Corymbia. Five clones of Eucalyptus spp., 8 years old and one of Corymbia torelliana x Corymbia citriodora, 4 years old were studied. In the wood were determined the basic density, structural chemical composition, thermogravimetric analysis (TG/DTG), crystallinity index and higher heating value. Carbonizations were carried out in a muffle oven, with a total time of 270 minutes, starting at 150°C and ending at 450°C. The gravimetric yield, apparent density, higher heating value and proximate analysis of charcoal were determined. The wood basic density varied between 477 and 652 kg/m3, with the highest value observed for the Eucalyptus cloeziana clone. This clone also had the highest total lignin content (32.6%), the highest charcoal yield (36.3%) and charcoal with the highest apparent density (466 kg/m3). The two clones of Eucalyptus urophylla had the highest heating value for charcoal, whose mean was 7545 kcal/kg. The clone of Corymbia torelliana x Corymbia citriodora, having an apparent density greater than 500 kg/m3 at 4 years of age, stood out in terms of productivity. All evaluated clones have potential for charcoal production, however, the Eucalyptus cloeziana clone stood out positively, being the most suitable for charcoal production.

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Section: Thermal Properties Of Woodsupporting

confidence: 87%

Section: Thermal Properties Of Woodmentioning

confidence: 87%

Section: Gravimetric Yield and Charcoal Qualitymentioning

confidence: 88%

Section: Gravimetric Yield and Charcoal Qualitymentioning

confidence: 99%

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WOOD AND CHARCOAL QUALITY IN THE SELECTION OF Eucalyptus spp. CLONES AND Corymbia torelliana X Corymbia citriodora FOR STEEL INDUSTRY

Oliveira,

Carneiro,

Peres

et al. 2023

Rev. Árvore

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“…The genetic materials in this study, all presented a high charcoal yield (Fialho et al 2019;Carneiro et al 2016;Pereira et al 2013). However, this propriety by itself isn't enough for genetic materials selection.…”

Section: Discussionmentioning

confidence: 79%

Clonal selection of Corymbia for energy and charcoal production

Peres¹,

Carneiro²,

Figueiró³

et al. 2019

ADV. FOR. SCI.

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The genus Corymbia appears as an option to produce best quality charcoal. The selection of genotypes through multivariate analysis can be a solution when multiple variables influence the result. The aim of this study was to characterize eight genotypes of Corymbia citriodora x Corymbia torelliana for energy and charcoal production, group and indicate the genetic materials with highest potential. The woods specific gravity, high heating value and energy density was determined. Energy density was grouped by the Scott-Knott test; group 1 was appointed for energy generation. The wood was carbonized. Charcoal yield, density, fixed carbon, friability, higher heating value, ash content, fixed carbon yield and energy density were determined. Principal component analysis was performed. Principal component 3 was chosen, as the representation of the ideal genetic material. The scores were calculated, and genetic materials III, VI and VIII are selected for charcoal production. The selection has shown to be efficient.

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Influence of spacing between trees on wood and charcoal quality indicators

Gomes,

Oliveira Neto,

Carneiro

et al. 2024

CERNE

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Background:The objective of this study was to evaluate the quality indicators for wood and charcoal from the Eucalyptus urophylla x Eucalyptus grandis hybrid (Clone GG 100) in different planting spacings. The study was conducted with the hybrid using the spacings of 2×1, 2×2, 3×2, and 3×3 m. The chemical properties of wood and charcoal were analyzed, and dry wood mass and energy per hectare were estimated. The data were subjected to the t test for comparison of means. Moreover, principal component analysis was conducted to assess the relationships between wood and charcoal indicators as a function of spacing. Results:The 2×2 m spacing showed the highest values for dry wood mass, lignin mass, mass of charcoal, and energy. The wider spacings of 3×2 and 3×3 m resulted in wood and charcoal of increased quality by showing wood of greater resistance to thermal degradation and charcoal of higher yield. Conclusion:Spacing between trees influenced wood quality indicators. The 2×2 m spacing showed higher estimates of mass and energy per hectare. However, wide spacings with an area greater than 6 m 2 are more suitable for charcoal production due to their superior wood properties, especially basic density and total lignin, which influence gravimetric yields and bulk density.

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Application of thermogravimetric analysis as a pre-selection tool for Eucalyptus spp.

Cited by 3 publications

References 21 publications

WOOD AND CHARCOAL QUALITY IN THE SELECTION OF Eucalyptus spp. CLONES AND Corymbia torelliana X Corymbia citriodora FOR STEEL INDUSTRY

WOOD AND CHARCOAL QUALITY IN THE SELECTION OF Eucalyptus spp. CLONES AND Corymbia torelliana X Corymbia citriodora FOR STEEL INDUSTRY

Clonal selection of Corymbia for energy and charcoal production

Influence of spacing between trees on wood and charcoal quality indicators

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