Potencial e participação das florestas na matriz energética

Moreira, J. M. M. Á. P.

doi:10.4336/2011.pfb.31.68.363

Cited by 18 publications

(12 citation statements)

References 7 publications

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“…The main application traditionally given to wood around the world is combustion for energy production due to its high-productive and renewable potential. Wood combustion accounts for more than half of the forest biomass consumed worldwide, mainly in developing countries, such as Brazil (Moreira, 2011), which is the largest charcoal producer in the world (Protásio et al, 2014). In Brazil, the increase of areas planted with "energy forestry" makes its energy matrix environmentally healthier due to the replacement of fossil fuels by renewable energy sources; moreover, this matrix is socially fair because of the large number of job positions generated by investments in the sector (Moreira, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Wood combustion accounts for more than half of the forest biomass consumed worldwide, mainly in developing countries, such as Brazil (Moreira, 2011), which is the largest charcoal producer in the world (Protásio et al, 2014). In Brazil, the increase of areas planted with "energy forestry" makes its energy matrix environmentally healthier due to the replacement of fossil fuels by renewable energy sources; moreover, this matrix is socially fair because of the large number of job positions generated by investments in the sector (Moreira, 2011). However, it is necessary to intensify the research on the topic, and to develop technologies to help selecting the most suitable species and strains for different planting regions, in order to increase the wood combustion (forest biomass) potential for Pesq.…”

Section: Introductionmentioning

confidence: 99%

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Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings

Tonini

Schwengber²,

Morales

et al. 2018

Pesq. agropec. bras.

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The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings

Tonini

Schwengber²,

Morales

et al. 2018

Pesq. agropec. bras.

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“…About 50% of the wood consumed in the world annually is used for energy purposes (Moreira 2011). Because of the current global dependence on fossil fuels, it is necessary to find new energy sources that are less polluting and safer with regard to availability (Santos and Hatakeyama 2012).…”

Section: Introductionmentioning

confidence: 99%

Anatomical and energy characteristics of charcoal made from five species

et al. 2014

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Charcoal is an important energy raw material and its properties are influenced by the wood's anatomical and chemical composition and the production process. The aim of this study was to evaluate the anatomical characteristics, calorific power and volatiles and ash content of carbonized wood from Byrsonima spicata, Calophyllum brasiliense, Cecropia sciadophylla, Cochlospermum orinocense and Schefflera morototoni. The calorific power varied from 26,878 to 31,117 kJ kg -1 ; the content of volatile materials ranged from 20.9 to 31.7%; ash content ranged from 0.1 to 3.8%; and carbon content varied from 68.2 to 75.3%. Anatomical structures of charcoal can be used for species identification. The studied species are not indicated for charcoal production because the levels of ash and volatile compounds are higher than those recommended for charcoal produced for household use. In addition, the calorific power and level of carbon content are insufficient for use in the steel industry.KEYWORDS: carbonization, carbonized wood properties, wood structure. Características anatômicas e energéticas do carvão de cinco espécies RESUMOO carvão vegetal é um importante insumo energético, sendo suas propriedades influenciadas pela composição anatômica e química da madeira utilizada e pelo processo de produção. Esse trabalho teve como objetivo avaliar as características anatômicas, poder calorífico e o conteúdo de voláteis e cinzas da madeira carbonizada de Byrsonima spicata, Calophyllum brasiliense, Cecropia sciadophylla, Cochlospermum orinocense e Schefflera morototoni. O poder calorífico variou de 26.878 a 31.117 kJ kg -1 ; o teor de voláteis variou de 20,9 a 31,76%; o teor de cinzas variou de 0,1 a 3,8% e o teor de carbono no carvão ficou entre 68,2 e 75,3%. A estrutura anatômica do carvão pode ser utilizada na identificação de espécies. As espécies estudadas não são indicadas para a produção de carvão, pois o teor de cinzas e materiais voláteis é superior ao indicado para carvão produzido para uso doméstico. Além disso, porque o poder calorífico e o teor de carbono do carvão são insuficientes para uso na indústria siderúrgica. PALAVRAS-CHAVE: carbonização, propriedades do lenho carbonizado, estruturas da madeira.

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“…Nonetheless, for this to be viable, knowledge regarding the essential characteristics is necessary for that use, in relation to ecological and silvicultural factors and those ones related to energy potential, supporting, thus, the decision-making for implementation of forest plantations (MOREIRA, 2011).…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF PLANTING AGE AND SPACING ON ENERGY PROPERTIES OF Eucalyptus grandis W. Hill EX Maiden

et al. 2016

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-This study aimed to determine the effect of planting age and spacing on energy properties of different compartments of the biomass of Eucalyptus grandis W. EFEITO DA IDADE E DO ESPAÇAMENTO DE PLANTIO NAS PROPRIEDADES ENERGÉTICAS DO Eucalyptus grandis W. Hill ex MaidenRESUMO -Esse trabalho teve como objetivo determinar o efeito da idade e do espaçamento de plantio nas propriedades energéticas de diferentes compartimentos da biomassa de Eucalyptus grandis W. Hill ex Maiden, distribuída em diferentes espaçamentos: 2,0x1,0 m, 2,0x1,5 m, 3,0x1,0 m e 3,0x1,5 m, no 1º, 3º e 5º ano após o plantio. O presente trabalho foi realizado em um experimento instalado em delineamento experimental de blocos completos casualizados em três repetições. Foram determinadas as variáveis biomassa (BIO), poder calorífico superior (PCS), massa específica básica (ME), produtividade energética (PE), densidade energética (DE), teor de carbono fixo (CF), teor de material volátil (MV) e teor de cinzas (CZ). As idades proporcionam um efeito em todas as variáveis analisadas, sendo que no 5º ano após o plantio, são verificados os maiores valores de BIO, PE, ME, DE e CF. Os espaçamentos de plantio induzem a diferentes produções de BIO e PE, com uma tendência de redução dos valores com o aumento do espaçamento de plantio, em todos os períodos avaliados. Os compartimentos das árvores influenciam nas variáveis BIO, PCS, PE, CF, MV e CZ. Do ponto de vista energético, quanto maior a idade e menor o espaçamento de plantio, melhores são as propriedades energéticas da biomassa.Palavras-chave: Biomassa; Poder calorífico superior, Produtividade energética.

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Potencial e participação das florestas na matriz energética

Cited by 18 publications

References 7 publications

Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings

Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings

Anatomical and energy characteristics of charcoal made from five species

EFFECT OF PLANTING AGE AND SPACING ON ENERGY PROPERTIES OF Eucalyptus grandis W. Hill EX Maiden

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