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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/08/2016 |
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Data da última atualização: |
14/09/2021 |
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Autoria: |
ROSSI, T.; MOURA, L. F. de; TORQUATO, P. R.; BRITO, J. O. |
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Título: |
Effect of extractive removal on the calorific value of Brazilian woods residues. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Journal of Chemistry and Chemical Engineering, v. 7, n. 4, p. 340-343, Apr. 2013. |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Calorific value; Extrativos de madeira; Poder calorífico. |
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Thesagro: |
Madeira; Resíduo. |
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Thesaurus Nal: |
Waste management; Wood extractives; Wood residues. |
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Categoria do assunto: |
W Química e Física |
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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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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/08/2002 |
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Data da última atualização: |
11/06/2019 |
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Autoria: |
MOURA, C. B.; SILVA, W. J. da. |
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Afiliação: |
CÉRES B. MOURA, Universidade Federal do Rio Grande do Norte - UFRN; Universidade Estadual de Campinas - Unicamp. |
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Título: |
Efeitos genéticos da resistência de linhagens de milho ao Helminthosporium turcicum pass. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 16, n. 3, p. 319-323, maio/jun. 1981 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Genetic effect of maize inbred lines resistance to Helminthosporium turcicum pass. |
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Conteúdo: |
Duas linhagens S3 de milho, uma resistente e outra susceptível ao Helminthosporium turcicum e suas gerações F1, F2, bem como os dois retrocruzamentos, foram estudados em condições bastante favoráveis para o desenvolvimento do agente patogênico. As seis populações foram avaliadas em um ensaio de blocos ao acaso com quatro repetições. Os resultados idicam que a resistência desse germoplasma ao Helminthosporium turcicum é, aparentemente, do tipo poligênico, com efeito principalmente do tipo não-aditivo. |
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Palavras-Chave: |
fitossanidade; Maize; Phytopathology. |
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Thesagro: |
Genética; Milho. |
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Thesaurus NAL: |
Genetics. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/198426/1/Efeitos-geneticos-da-resistencia-de-linhagens.pdf
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Marc: |
LEADER 01230naa a2200217 a 4500
001 1107803
005 2019-06-11
008 1981 bl uuuu u00u1 u #d
100 1 $aMOURA, C. B.
245 $aEfeitos genéticos da resistência de linhagens de milho ao Helminthosporium turcicum pass.
260 $c1981
500 $aTítulo em inglês: Genetic effect of maize inbred lines resistance to Helminthosporium turcicum pass.
520 $aDuas linhagens S3 de milho, uma resistente e outra susceptível ao Helminthosporium turcicum e suas gerações F1, F2, bem como os dois retrocruzamentos, foram estudados em condições bastante favoráveis para o desenvolvimento do agente patogênico. As seis populações foram avaliadas em um ensaio de blocos ao acaso com quatro repetições. Os resultados idicam que a resistência desse germoplasma ao Helminthosporium turcicum é, aparentemente, do tipo poligênico, com efeito principalmente do tipo não-aditivo.
650 $aGenetics
650 $aGenética
650 $aMilho
653 $afitossanidade
653 $aMaize
653 $aPhytopathology
700 1 $aSILVA, W. J. da
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 16, n. 3, p. 319-323, maio/jun. 1981
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