Teores de extrativos na madeira de Mogno Brasileiro / Extractive contents in Brazilian Mahogany wood

Zaque, Leonardo Antônio Moraes; Mendoza, Zaíra Morais dos Santos Hurtado de; Borges, Pedro Hurtado de Mendoza; Ferreira, Mayra Daniela; Morais, Pedro Hurtado de Mendoza

doi:10.34115/basrv5n4-011

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Refs. [34,44] observed smaller extractive content ranges (5-8%) and (7-11.5%), respectively, which are closer to those found in the materials of the present study.…”

Section: Chemical Characterizationsupporting

confidence: 89%

“…EC in wood is an important influence on energy use due to its carbon content. The solubility in several solvents, water among them, exerts influence on the moisture content of the material, which influences the reduction in calorific value and the effective biomass burning [33][34][35]. However, there is a positive relationship between extractive content and calorific value [36,37].…”

Section: Chemical Characterizationmentioning

confidence: 99%

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Technical Feasibility Study of Orange Wood Residues (Citrus sinensis) for Bioenergy Generation

Dias,

Guimarães,

Dias Júnior

et al. 2024

Energies

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The production of orange (Citrus sinensis) generates many residues, and the few that are used are usually by-products of the fruit juice processing industry. Among the residues, wood is potentially advantageous for use in bioenergy, but with few records in the literature. In this sense, this study sought to evaluate the feasibility of using orange wood for energy purposes by performing chemical characterization, immediate analysis, FTIR, calorific value, thermogravimetry and bulk and energetic densities for three compositions: 100% trunk (100T), 90% trunk + 10% bark (90T10B) and 100% bark (100B). 100T showed a higher fixed carbon content (16.76%) and equality with 90T10B in lignin, holocellulose, useful calorific value and volatile materials. 100B presented higher extractives and ash contents of 19.67% and 10.35%, respectively. The FTIR spectra and thermogravimetric curves were similar in 100T and 90T10B. 100B showed more stages of degradation and a higher incidence of peaks in the range 780–612 cm−1. The bulk density was equal in 100T and 90T10B, but the energy density was higher in 100T (6.16 Gj.m−3). 100T and 90T10B are good options for bioenergy and the chemical composition and thermal degradation of 100B point to new investigations in this composition.

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“…Refs. [34,44] observed smaller extractive content ranges (5-8%) and (7-11.5%), respectively, which are closer to those found in the materials of the present study.…”

Section: Chemical Characterizationsupporting

confidence: 89%

Section: Chemical Characterizationmentioning

confidence: 99%

Technical Feasibility Study of Orange Wood Residues (Citrus sinensis) for Bioenergy Generation

Dias,

Guimarães,

Dias Júnior

et al. 2024

Energies

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“…To mitigate undesirable effects on products, techniques and transformation processes are often applied, such as thermal modification, which aims to conserve or improve wood's physical, chemical and mechanical characteristics (GALLIO et al 2019, ZANUNCIO et al 2014, ZAQUE et al 2021.…”

mentioning

confidence: 99%

Determinação dos extrativos totais e teor de celulose da madeira de Ipê submetida ao processo de modificação térmica

Candaten

Mangini

Trevisan

et al. 2023

Rev. Ciênc. Agrovet.

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A demanda de produtos oriundos da madeira vem se expandindo, por conta disso, há a necessidade de estudos relacionados à qualidade e aplicação desses materiais. Com isso, a presente pesquisa teve como objetivo avaliar o teor de extrativos e de celulose da madeira de Ipê submetida ao processo de modificação térmica. Para realização do estudo foram abatidos quatro indivíduos de Handroanthus chrysotrichus (Mart. ex DC.) Mattos, com 11 anos de idade. Posteriormente, confeccionaram-se amostras de 2,5 x 2,5 x 41 cm, as quais foram acondicionadas em estufa com circulação de ar forçada, nas temperaturas de 120, 150, 180 e 210 ºC, por um período de 4 h. Em seguida, porções aleatórias dos corpos de prova foram seccionadas e trituradas em moinho de facas, e então, peneiradas na fração de 40/60 mesh, para a realização dos ensaios químicos de teor de extrativos totais e teor de celulose. Os dados foram processados e submetidos ao teste de médias de Tukey, utilizando o software R. Os resultados das propriedades químicas estudadas indicaram variações de acordo com as temperaturas, não apresentando uma tendência de estabilização entre os tratamentos aplicados. Uma relação entre o comportamento dessas propriedades com as demais características tecnológicas dos trabalhos disponíveis na literatura foi observada. De modo geral, são recomendados mais estudos acerca das propriedades químicas da madeira dessa espécie associados a aplicação de altas temperaturas.

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Alternative Tree Species for Sustainable Forest Management in the Brazilian Amazon

Lima,

Souza,

Matricardi

et al. 2024

Forests

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The scarcity of hardwoods from tropical forests makes the search for alternative species necessary for commercialization. This study aimed to establish groups of timber species from the Amazon Forest with potential for logging purposes through the assessment of their physical-mechanical properties, aiming to identify alternative species that can meet the market demands. We utilized data from the Forest Products Laboratory (LPF) (containing information on basic density and other wood mechanical properties) and the Timberflow platform, as well. We applied a multivariate cluster analysis technique with the aim of grouping species based on the technological characteristics of their wood and evaluating similarity among them to obtain homogeneous groups in terms of economic potential and utilization. The results indicated four homogeneous groups: Cluster 1 (40.72% of species, basic density-db: 690 kg m−3), Cluster 2 (13.92%, db: 260 and 520 kg m−3), Cluster 3 (27.32%, db: 550 and 830 kg m−3), and Cluster 4 (18.04%, db: 830 kg m−3). Most of the 20 listed species are classified as more commercially viable (70%), with high wood density. Species identified as alternatives include Dialium guianense and Zollernia paraensis for Dipteryx odorata, Terminalia argentea for Dinizia excelsa, Terminalia amazonia and Buchenavia grandis for Goupia glabra, and Protium altissimum and Maclura tinctoria for Hymenaea courbaril. The analysis highlighted the overexploitation of a restricted group of species and the need to find alternatives to ensure the sustainability of forest management. This study contributed to identifying species that can serve as alternatives to commercial ones, promoting a more balanced and sustainable forest management.

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Teores de extrativos na madeira de Mogno Brasileiro / Extractive contents in Brazilian Mahogany wood

Cited by 3 publications

References 2 publications

Technical Feasibility Study of Orange Wood Residues (Citrus sinensis) for Bioenergy Generation

Technical Feasibility Study of Orange Wood Residues (Citrus sinensis) for Bioenergy Generation

Determinação dos extrativos totais e teor de celulose da madeira de Ipê submetida ao processo de modificação térmica

Alternative Tree Species for Sustainable Forest Management in the Brazilian Amazon

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