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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
09/08/2016 |
Data da última atualização: |
14/09/2021 |
Autoria: |
ROSSI, T.; MOURA, L. F. de; TORQUATO, P. R.; BRITO, J. O. |
Título: |
Effect of extractive removal on the calorific value of Brazilian woods residues. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Journal of Chemistry and Chemical Engineering, v. 7, n. 4, p. 340-343, Apr. 2013. |
Idioma: |
Inglês |
Conteúdo: |
In wood processing, the production of residues is an unavoidable aspect to be considered. The use of wood residues is gaining importance due to the large amount generated and improper disposal, which can seriously harm environment. Burning of wood residues to energy generation is an increasingly usual practice. However, wood residues hold chemical substances that could be recovered before burning. These substances are the wood extractives, which may have many uses as natural dyes for fabrics, foods and cosmetics, as well as potential medicines. Thus, it is of great interest to study the effect of extractive removal on the calorific value of wood residues. In this work, the calorific value of three Brazilian wood species commonly used in sawmills (hymenaeacourbaril, jatoba; cedrelingacatenaeformis, cedroarana; tabebuiasp, ipe) and residues of urban trees pruning (caesalpiniaechinata, Brazil wood) were evaluated before and after extraction in hot water. In woods studied, the calorific value showed three patterns of behavior after removal of extractives soluble in hot water. For Brazil wood, the removal of extractives caused no significant change in calorific value. For cedroarana and jatoba, extractive removal led to a decrease in wood calorific value of 161.3 kcal·kg-1 and 40.1 kcal·kg-1, respectively, which indicates that the extractives from these species have a positive energy potential. Finally, for ipe, the removal of extractives resulted in an increase in calorific value of wood (67.6 kcal·kg-1), which might encourage the recovery of extractives from wood residues before burning for energy generation. MenosIn wood processing, the production of residues is an unavoidable aspect to be considered. The use of wood residues is gaining importance due to the large amount generated and improper disposal, which can seriously harm environment. Burning of wood residues to energy generation is an increasingly usual practice. However, wood residues hold chemical substances that could be recovered before burning. These substances are the wood extractives, which may have many uses as natural dyes for fabrics, foods and cosmetics, as well as potential medicines. Thus, it is of great interest to study the effect of extractive removal on the calorific value of wood residues. In this work, the calorific value of three Brazilian wood species commonly used in sawmills (hymenaeacourbaril, jatoba; cedrelingacatenaeformis, cedroarana; tabebuiasp, ipe) and residues of urban trees pruning (caesalpiniaechinata, Brazil wood) were evaluated before and after extraction in hot water. In woods studied, the calorific value showed three patterns of behavior after removal of extractives soluble in hot water. For Brazil wood, the removal of extractives caused no significant change in calorific value. For cedroarana and jatoba, extractive removal led to a decrease in wood calorific value of 161.3 kcal·kg-1 and 40.1 kcal·kg-1, respectively, which indicates that the extractives from these species have a positive energy potential. Finally, for ipe, the removal of extractives resulted in an increase in calorific valu... Mostrar Tudo |
Palavras-Chave: |
Calorific value; Extrativos de madeira; Poder calorífico. |
Thesagro: |
Madeira; Resíduo. |
Thesaurus Nal: |
Waste management; Wood extractives; Wood residues. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 02382naa a2200253 a 4500 001 2050518 005 2021-09-14 008 2013 bl uuuu u00u1 u #d 100 1 $aROSSI, T. 245 $aEffect of extractive removal on the calorific value of Brazilian woods residues.$h[electronic resource] 260 $c2013 520 $aIn wood processing, the production of residues is an unavoidable aspect to be considered. The use of wood residues is gaining importance due to the large amount generated and improper disposal, which can seriously harm environment. Burning of wood residues to energy generation is an increasingly usual practice. However, wood residues hold chemical substances that could be recovered before burning. These substances are the wood extractives, which may have many uses as natural dyes for fabrics, foods and cosmetics, as well as potential medicines. Thus, it is of great interest to study the effect of extractive removal on the calorific value of wood residues. In this work, the calorific value of three Brazilian wood species commonly used in sawmills (hymenaeacourbaril, jatoba; cedrelingacatenaeformis, cedroarana; tabebuiasp, ipe) and residues of urban trees pruning (caesalpiniaechinata, Brazil wood) were evaluated before and after extraction in hot water. In woods studied, the calorific value showed three patterns of behavior after removal of extractives soluble in hot water. For Brazil wood, the removal of extractives caused no significant change in calorific value. For cedroarana and jatoba, extractive removal led to a decrease in wood calorific value of 161.3 kcal·kg-1 and 40.1 kcal·kg-1, respectively, which indicates that the extractives from these species have a positive energy potential. Finally, for ipe, the removal of extractives resulted in an increase in calorific value of wood (67.6 kcal·kg-1), which might encourage the recovery of extractives from wood residues before burning for energy generation. 650 $aWaste management 650 $aWood extractives 650 $aWood residues 650 $aMadeira 650 $aResíduo 653 $aCalorific value 653 $aExtrativos de madeira 653 $aPoder calorífico 700 1 $aMOURA, L. F. de 700 1 $aTORQUATO, P. R. 700 1 $aBRITO, J. O. 773 $tJournal of Chemistry and Chemical Engineering$gv. 7, n. 4, p. 340-343, Apr. 2013.
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Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
25/11/2013 |
Data da última atualização: |
03/06/2022 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
COUTO, H. A. R.; NETA LANES, J. J. S.; OLIVEIRA, T. S. D.; SOUSA, R. S. R. |
Afiliação: |
HILMA ALESSANDRA RODRIGUES DO COUTO, CPATU; JULIETA DE JESUS DA S NETA LANES, CPATU; THIAGO SENA DANTAS DE OLIVEIRA, CPATU; R. S. R. SOUSA, UEPA. |
Título: |
Gerenciamento de resíduos de laboratórios na Embrapa Amazônia Oriental. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
In: ENCONTRO NACIONAL SOBRE METODOLOGIAS E GESTÃO DE LABORATÓRIOS, 18.; SIMPÓSIO SOBRE PROCEDIMENTOS ANALÍTICOS E A RASTREABILIDADE DOS RESULTADOS NA AGROPECUÁRIA, 5., 2013, Salvador. O mundo atrás da bancada: trabalhos apresentados. Cruz das Almas: Embrapa Mandioca e Fruticultura, 2013. |
Páginas: |
p. 29. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Gerenciamento. |
Thesagro: |
Laboratório; Resíduo. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/93152/1/Met2013-p29.pdf
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Marc: |
LEADER 00800nam a2200181 a 4500 001 1972118 005 2022-06-03 008 2013 bl uuuu u00u1 u #d 100 1 $aCOUTO, H. A. R. 245 $aGerenciamento de resíduos de laboratórios na Embrapa Amazônia Oriental.$h[electronic resource] 260 $aIn: ENCONTRO NACIONAL SOBRE METODOLOGIAS E GESTÃO DE LABORATÓRIOS, 18.; SIMPÓSIO SOBRE PROCEDIMENTOS ANALÍTICOS E A RASTREABILIDADE DOS RESULTADOS NA AGROPECUÁRIA, 5., 2013, Salvador. O mundo atrás da bancada: trabalhos apresentados. Cruz das Almas: Embrapa Mandioca e Fruticultura$c2013 300 $ap. 29.$c1 CD-ROM. 650 $aLaboratório 650 $aResíduo 653 $aGerenciamento 700 1 $aNETA LANES, J. J. S. 700 1 $aOLIVEIRA, T. S. D. 700 1 $aSOUSA, R. S. R.
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