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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas; Embrapa Solos. |
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Data corrente: |
27/02/2013 |
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Data da última atualização: |
26/09/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ALHO, C. F. B. V.; AUCCAISE, R.; MAIA, C. M. B. de F.; NOVOTNY, E. H.; LELIS, R. C. C. |
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Afiliação: |
CARLOS FRANCISCO BRAZÃO VIEIRA ALHO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; RUBEN AUCCAISE, BOLSISTA CNPS; CLAUDIA MARIA BRANCO DE F MAIA, CNPF; ETELVINO HENRIQUE NOVOTNY, CNPS; ROBERTO CARLOS COSTA LELIS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO. |
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Título: |
Using solid state 13C NMR to study pyrolysis final temperature effects on biochar stability. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
In: XU, J.; WU, J.; HE, Y. (ed.). Functions of natural organic matter in changing environment. Dordrecht: Springer, 2013. p. 1007-1011. |
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DOI: |
https://doi.org/10.1007/978-94-007-5634-2_186 |
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Idioma: |
Inglês |
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Conteúdo: |
Recent results in biochar research show that it is not only composed of stable carbon, since a portion of these materials is degraded relatively easily once applied to soil, and this condition is most dependent on pyrolysis conditions, especially the final temperature. Thus, the aim of this study was to evaluate pyrolysis final temperature effects on the stability of biochar produced from forest residues using solid-state 13C NMR. Pyrolysis was performed at a heating rate of 10°C·min-1 up to the final temperature of interest (350, 450 and 550°C), maintaining this temperature for 60 min. Solid-state 13C NMR spectra were obtained on a Varian 500-MHz spectrometer for fresh wood and biochars produced at 350, 450 and 550°C for Eucalyptus dunnii (DUN) and Pinus caribaea (CAR). Comparing fresh samples with their respective biochars, regardless of the botanical group, after pyrolysis, carbohydrates are degraded, and there is a change in the structure of the materials, with a predominance of aromatic structures, which are more resistant to degradation, therefore reflecting in the increased stability of these materials. For 350°C, it is still possible to observe signals related to lignin indicating that up to this temperature it has not been completely degraded. The spectra of biochars produced at 450 and 550°C are very similar, indicating that there is no need to produce biochars at very high final temperatures, since the structure of these materials obtained at 550°C slightly altered as of 450°C, keeping the predominance of aromatic structures. MenosRecent results in biochar research show that it is not only composed of stable carbon, since a portion of these materials is degraded relatively easily once applied to soil, and this condition is most dependent on pyrolysis conditions, especially the final temperature. Thus, the aim of this study was to evaluate pyrolysis final temperature effects on the stability of biochar produced from forest residues using solid-state 13C NMR. Pyrolysis was performed at a heating rate of 10°C·min-1 up to the final temperature of interest (350, 450 and 550°C), maintaining this temperature for 60 min. Solid-state 13C NMR spectra were obtained on a Varian 500-MHz spectrometer for fresh wood and biochars produced at 350, 450 and 550°C for Eucalyptus dunnii (DUN) and Pinus caribaea (CAR). Comparing fresh samples with their respective biochars, regardless of the botanical group, after pyrolysis, carbohydrates are degraded, and there is a change in the structure of the materials, with a predominance of aromatic structures, which are more resistant to degradation, therefore reflecting in the increased stability of these materials. For 350°C, it is still possible to observe signals related to lignin indicating that up to this temperature it has not been completely degraded. The spectra of biochars produced at 450 and 550°C are very similar, indicating that there is no need to produce biochars at very high final temperatures, since the structure of these materials obtained at 550°C slightly altere... Mostrar Tudo |
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Palavras-Chave: |
Forest residues; NMR; Organic matter stability; Pyrogenic carbon. |
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Thesaurus Nal: |
biochar. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02379nam a2200229 a 4500
001 2156892
005 2023-09-26
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/978-94-007-5634-2_186$2DOI
100 1 $aALHO, C. F. B. V.
245 $aUsing solid state 13C NMR to study pyrolysis final temperature effects on biochar stability.$h[electronic resource]
260 $aIn: XU, J.; WU, J.; HE, Y. (ed.). Functions of natural organic matter in changing environment. Dordrecht: Springer, 2013. p. 1007-1011.$c1011
520 $aRecent results in biochar research show that it is not only composed of stable carbon, since a portion of these materials is degraded relatively easily once applied to soil, and this condition is most dependent on pyrolysis conditions, especially the final temperature. Thus, the aim of this study was to evaluate pyrolysis final temperature effects on the stability of biochar produced from forest residues using solid-state 13C NMR. Pyrolysis was performed at a heating rate of 10°C·min-1 up to the final temperature of interest (350, 450 and 550°C), maintaining this temperature for 60 min. Solid-state 13C NMR spectra were obtained on a Varian 500-MHz spectrometer for fresh wood and biochars produced at 350, 450 and 550°C for Eucalyptus dunnii (DUN) and Pinus caribaea (CAR). Comparing fresh samples with their respective biochars, regardless of the botanical group, after pyrolysis, carbohydrates are degraded, and there is a change in the structure of the materials, with a predominance of aromatic structures, which are more resistant to degradation, therefore reflecting in the increased stability of these materials. For 350°C, it is still possible to observe signals related to lignin indicating that up to this temperature it has not been completely degraded. The spectra of biochars produced at 450 and 550°C are very similar, indicating that there is no need to produce biochars at very high final temperatures, since the structure of these materials obtained at 550°C slightly altered as of 450°C, keeping the predominance of aromatic structures.
650 $abiochar
653 $aForest residues
653 $aNMR
653 $aOrganic matter stability
653 $aPyrogenic carbon
700 1 $aAUCCAISE, R.
700 1 $aMAIA, C. M. B. de F.
700 1 $aNOVOTNY, E. H.
700 1 $aLELIS, R. C. C.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Status |
URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/12/2020 |
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Data da última atualização: |
15/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MAKUNDE, P. T.; SLIPPERS, B.; BURCKHARDT, D.; QUEIROZ, D. L. de; LAWSON, S. A.; HURLEY, B. P. |
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Afiliação: |
PRIVILEGE T. MAKUNDE, DEPARTMENT OF ZOOLOGY AND ENTOMOLOGY, FORESTRY AND AGRICULTURAL BIOTECHNOLOGY INSTITUTE, UNIVERSITY OF PRETORIA, PRETORIA, SOUTH AFRICA; BERNARD SLIPPERS, DEPARTMENT OF BIOCHEMISTRY, GENETICS AND MICROBIOLOGY, FORESTRY AND AGRICULTURAL BIOTECHNOLOGY INSTITUTE, UNIVERSITY OF PRETORIA, PRETORIA, SOUTH AFRICA; DANIEL BURCKHARDT, NATURHISTORISCHES MUSEUM, BASEL, SWITZERLAND; DALVA LUIZ DE QUEIROZ, CNPF; SIMON A. LAWSON, UNIVERSITY OF THE SUNSHINE COAST, SIPPY DOWNS, AUSTRALIA; BRETT P. HURLEY, DEPARTMENT OF ZOOLOGY AND ENTOMOLOGY, FORESTRY AND AGRICULTURAL BIOTECHNOLOGY INSTITUTE, UNIVERSITY OF PRETORIA, PRETORIA, SOUTH AFRICA. |
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Título: |
Current and potential threat of psyllids (Hemiptera: Psylloidea) on eucalypts. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Southern Forests, v. 82, n. 3, p. 233-24, 2020. |
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DOI: |
https://doi.org/10.2989/20702620.2020.1813650 |
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Idioma: |
Inglês |
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Conteúdo: |
The introduction of Australian psyllids to non-native ranges across the globe is continually increasing. This is due to an increase in global trade and human movement, exacerbated by climate change. Several psyllids have been recorded as pests of eucalypts in the native range of these trees. With the current trend of eucalypt pest introductions, there is a concern that many more eucalypt-feeding psyllids in Australia will in time be introduced and become pests in eucalypt-growing regions of other continents. Here we examine the current and potential threat of psyllids on eucalypts. Specifically, we consider the diversity of eucalypt psyllids in their native range and those eucalypt psyllids that have been introduced outside Australia and become pests in their new ranges. In addition, the potential pathways and characteristics of these invasive psyllids are discussed. |
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Palavras-Chave: |
Eucalypt pest; Eucalypt psyllids; Plantation forest; Praga florestal; Psilídeo. |
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Thesagro: |
Eucalipto; Praga de Planta. |
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Thesaurus NAL: |
Biodiversity; Eucalyptus; Insect pests; Insecta; Invasive species; Pest control; Psyllidae. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 01884naa a2200361 a 4500
001 2128160
005 2020-12-15
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2989/20702620.2020.1813650$2DOI
100 1 $aMAKUNDE, P. T.
245 $aCurrent and potential threat of psyllids (Hemiptera$bPsylloidea) on eucalypts.$h[electronic resource]
260 $c2020
520 $aThe introduction of Australian psyllids to non-native ranges across the globe is continually increasing. This is due to an increase in global trade and human movement, exacerbated by climate change. Several psyllids have been recorded as pests of eucalypts in the native range of these trees. With the current trend of eucalypt pest introductions, there is a concern that many more eucalypt-feeding psyllids in Australia will in time be introduced and become pests in eucalypt-growing regions of other continents. Here we examine the current and potential threat of psyllids on eucalypts. Specifically, we consider the diversity of eucalypt psyllids in their native range and those eucalypt psyllids that have been introduced outside Australia and become pests in their new ranges. In addition, the potential pathways and characteristics of these invasive psyllids are discussed.
650 $aBiodiversity
650 $aEucalyptus
650 $aInsect pests
650 $aInsecta
650 $aInvasive species
650 $aPest control
650 $aPsyllidae
650 $aEucalipto
650 $aPraga de Planta
653 $aEucalypt pest
653 $aEucalypt psyllids
653 $aPlantation forest
653 $aPraga florestal
653 $aPsilídeo
700 1 $aSLIPPERS, B.
700 1 $aBURCKHARDT, D.
700 1 $aQUEIROZ, D. L. de
700 1 $aLAWSON, S. A.
700 1 $aHURLEY, B. P.
773 $tSouthern Forests$gv. 82, n. 3, p. 233-24, 2020.
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Embrapa Florestas (CNPF) |
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