Carbonização de resíduos do processamento mecânico da madeira de eucalipto.

Santiago, Anderson Ribeiro; Andrade, Azarias Machado de

doi:10.5902/198050981819

Cited by 15 publications

(10 citation statements)

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“…Quanto ao teor de cinzas são comumente encontrados na literatura baixos valores (0,16 a 2%) para o carvão vegetal de vários clones e espécies de Eucalyptus (TRUGILHO et al, 2001;SANTIAGO & ANDRADE, 2005;TRUGILHO et al, 2005;BOTREL et al, 2007;NEVES et al, 2011;ASSIS et al, 2012;REIS et al, 2012a;REIS et al, 2012b), sendo que essas médias são inferiores ao encontrado para o carvão vegetal das espécies avaliadas. Protásio et al (2011) encontraram teor de cinzas para o carvão vegetal de Qualea parviflora de 2,93% e superior ao relatado para clones de eucalipto, corroborando com este trabalho.…”

Section: Resultsunclassified

Qualidade da madeira de cinco espécies de ocorrência no cerrado para produção de carvão vegetal

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Bianchi

Protásio

et al. 2014

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RESUMO:Este trabalho teve como objetivo avaliar a qualidade da madeira e do carvão vegetal de algumas espécies de ocorrência do cerrado mineiro visando o uso siderúrgico. Foram utilizadas cinco espécies de madeiras de ocorrência no cerrado procedentes do Estado de Minas Gerais. Na madeira foram avaliadas a densidade básica e os teores de lignina, extrativos totais, holocelulose e cinzas. No carvão vegetal foram avaliados os rendimentos em carvão vegetal e em carbono fixo, os teores de carbono fixo, materiais voláteis e cinzas, o poder calorífico superior e a densidade relativa aparente. Na avaliação do experimento utilizou-se o delineamento inteiramente casualizado com quatro repetições. Utilizou-se ainda a análise multivariada de componentes principais. As espécies Casearia sylvestris e Luehea divaricata apresentaram os maiores rendimentos gravimétricos em carvão vegetal e em carbono fixo, bem como elevados teores de lignina na madeira. O carvão vegetal da espécie Trema micrantha possui elevado poder calorífico superior, mas a menor densidade relativa aparente. A espécie Guazuma ulmifolia se destacou pelo elevado teor de carbono fixo e grande potencial para uso siderúrgico, juntamente com a espécie Casearia sylvestris. Palavras-chave: carvão vegetal, espécies nativas, qualidade da madeira WOOD QUALITY OF FIVE SPECIES FROM CERRADO FOR PRODUCTION OF CHARCOAL

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Section: Resultsunclassified

Qualidade da madeira de cinco espécies de ocorrência no cerrado para produção de carvão vegetal

Costa

Bianchi

Protásio

et al. 2014

CERNE

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“…The charcoal yield values observed in this study, which ranged from 34.6 to 36.6%, can be considered satisfactory since Arantes (2009), when evaluating a hybrid clone of Eucalyptus urophylla and Eucalyptus grandis at six years of age, found yields varying from 33.68 to 35.07%, using final carbonization temperature of 450°C and heating rate of 1.67°C. Santiago and Andrade (2005) found an average carbonization yield of 26.91% for Eucalyptus urophylla wood, using a final temperature of 400°C and a heating rate of 11.98°C/min, this low yield can be explained by the high heating rate used by the authors. According to Pinheiro et al (2005) the higher this rate, the lower the charcoal yield.…”

Section: Properties and Mass And Energy Estimates For Charcoalmentioning

confidence: 90%

Estimates of Mass and Energy of Different Genetic Material Eucalyptus

et al. 2017

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The use of forest biomass or its derived charcoal as firewood can generate environmental and economic advantages for the Brazilian energy matrix. In this context, the main objective was to evaluate the energy potential of certain eucalyptus genetic materials, which are used by the charcoal production sector. We have evaluated six materials of Eucalyptus ssp. at the age of seven years from commercial plantations, spaced 3 x 3m, grown in the Alto Vale do Jequitinhonha, in Minas Gerais. Based on the production data, the average annual increment and the physical and chemical analyzes of the wood and the charcoal produced with it, we have estimated parameters to compare the potential of each genetic material, such as mass and energy of wood and charcoal per hectare, as well as the energy density. The results show that a material of Eucalyptus urophylla has greater energetic potential in relation to the others because it presents higher energy/ hectare estimated for its wood and consequently for charcoal produced with it. However, a material of Eucalyptus cloeziana presented a higher energetic density of the wood and its charcoal, showing advantages mainly in the transport.

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“…Eucalyptus urophylla is used for the production of plywood (Almeida et al, 2004;Guimarães JR et al, 2012), agglomerates (Mendes et al, 2014), cement-wood panels , LVL (Guimarães JR et al, 2015), OSB (Mendes et al, 2009), floors (Padilha et al, 2006), lumber (Scanavaca Jr & Garcia, 2003b;Gonçalves et al, 2009), furniture (Plaster et al, 2012), cellulose pulp and kraft paper (Lorenzi et al, 2003;Queiroz et al, 2004;Santos & Sansígolo, 2007;Liu & Zhou, 2011), charcoal and biomass (Santiago & Andrade, 2005;Rezende et al, 2010;Assis et al, 2012;Reis et al, 2012;Gadelha et al, 2015;Wiersema & León, 2016), among others.…”

Section: Introductionmentioning

confidence: 99%

PHYSICAL-MECHANICAL CHARACTERIZATION OF Eucalyptus urophylla WOOD

et al. 2017

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ABSTRACT:Eucalyptus urophylla consists in a wood-producing species, which offers a natural multiple raw material of good quality for applications in rural and civil constructions. However, Eucalyptus urophylla still has a small utilization as building parts and elements, resulting from the possible ignorance and low diffusion of its structural possibilities. Thereby, the present research aims to measure the main thirteen mechanical properties of Eucalyptus urophylla wood for two different moisture contents, 12% and 30% (green wood). Furthermore, in these two conditions of moisture content evaluation, volumetric mass densities were also evaluated. At the end of this evaluation, which included 2688 determinations, all the obtained results were statistically treated with t-test at a 5% of significance level in order to evaluate the influence of moisture content in the evaluated properties. Twelve mechanical properties were significantly affected by moisture content, and the behavior pattern consisted in increasing the values of the properties with the reduction of the moisture content.

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Carbonização de resíduos do processamento mecânico da madeira de eucalipto.

Cited by 15 publications

References 0 publications

Qualidade da madeira de cinco espécies de ocorrência no cerrado para produção de carvão vegetal

Qualidade da madeira de cinco espécies de ocorrência no cerrado para produção de carvão vegetal

Estimates of Mass and Energy of Different Genetic Material Eucalyptus

PHYSICAL-MECHANICAL CHARACTERIZATION OF Eucalyptus urophylla WOOD

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