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| Registros recuperados : 14 | |
| 3. |  | LINHARES, C. R.; LEMKE, J.; AMARAL, N.; AUCCAISE, R.; NOVOTNY, E. H. Chemical functionalisation of actived charcoal - Reproducing the Terra Preta de Índios organic matter model. In: INTERNATIONAL BIOCHAR CONFERENCE, 3., 2010, Rio de Janeiro. Processing from Terra Preta de Índios to the whole world. Rio de Janeiro: Embrapa Solos, 2010. 1 CD-ROM. (Embrapa Solos. Documentos, 120).| Biblioteca(s): Embrapa Solos. |
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| 5. | | MELLIGAN, F.; AUCCAISE, R.; NOVOTNY, E. H.; LEAHY, J. J.; HAYES, M. H. B.; KWAPINSKI, W. Pressurised pyrolysis of Miscanthus using a fixed bed reactor. Bioresource Technology, v. 102, n. 3, p. 3466-3470, Feb. 2011.| Biblioteca(s): Embrapa Solos. |
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| 6. | | MELLIGAN, F.; DUSSAN, K.; AUCCAISE, R.; NOVOTNY, E. H.; LEAHY, E. H.; HAYES, M. H. B.; KWAPINSKI, W. Characterisation of the products from pyrolysis of residues after acid hydrolysis of miscanthus. Bioresource Technology, v. 108, p. 258-263, Mar. 2012.| Biblioteca(s): Embrapa Solos. |
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| 8. | | LINHARES, C. R.; LEMKE, J.; AUCCAISE, R.; DUÓ, D. A.; ZIOLLI, R. L.; KWAPINSKI, W.; NOVOTNY, E. H. Reproducing the organic matter model of anthropogenic dark earth of Amazonia and testing the ecotoxicity of functionalized charcoal compounds. Pesquisa Agropecuária Brasileira, v. 47, n. 5, p. 693-698, maio 2012.| Biblioteca(s): Embrapa Solos; Embrapa Unidades Centrais. |
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| 10. | | NOVOTNY, E. H.; AUCCAISE, R.; VELLOSO, M. H. R.; CORRÊA, J. C.; HIGARASHI, M. M.; ABREU, V. M. N.; ROCHA, J. D.; KWAPINSKI, W. Characterization of phosphate structures in biochar from swine bones. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 5, p. 672-676, maio 2012.| Biblioteca(s): Embrapa Agroenergia; Embrapa Solos; Embrapa Solos / UEP-Recife; Embrapa Suínos e Aves; Embrapa Unidades Centrais. |
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| 11. | | NOVOTNY, E. H.; AUCCAISE, R.; VELLOSO, M. H. R.; CORREA, J. C.; HIGARASHI, M. M.; ABREU, V. M. N.; ROCHA, J. D. C-13 and P-31 NMR Analyses of swine bones biochar. In: INTERNATIONAL BIOCHAR CONFERENCE, 3., 2010, Rio de Janeiro. Processing from Terra Preta de Índios to the whole world. Rio de Janeiro: Embrapa Solos, 2010. 1 CD-ROM. (Embrapa Solos. Documentos, 120).| Biblioteca(s): Embrapa Solos. |
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| 12. | | NOVOTNY, E. H.; AUCCAISE, R.; VELLOSO, M. R. H.; CORREA, J. C.; HIGARASHI, M. M.; ABREU, V. M. N.; ROCHA, J. D. C-13 and P-31 NMR analyses of swine bones biochar. In: INTERNATIONAL BIOCHAR CONFERENCE, 3., 2010, Rio de Janeiro. Processing from terra preta de índios to the whole world. Brasília, DF: Embrapa: MAPA, 2010. p. 33-34. 1 CD-ROM.| Biblioteca(s): Embrapa Agroenergia. |
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| 13. | | NOVOTNY, E. H.; BALIEIRO, F. de C.; AUCCAISE, R.; INACIO, C. de T.; RODRIGUES, A. F.; MORAES, A. V. de C. de. Avaliação espectroscópica de composto e vermicomposto de aparas de grama misturado a carvão e fosfato. In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 9., 2011, Aracaju. Matéria orgânica natural e substâncias húmicas: dos avanços das técnicas de caracterização ao sequestro de C. [Aracaju: UFS: IHSS, 2011]. 1 CD-ROM.| Biblioteca(s): Embrapa Solos. |
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| 14. | | ALHO, C. F. B. V.; AUCCAISE, R.; MAIA, C. M. B. de F.; NOVOTNY, E. H.; LELIS, R. C. da C. Using solid state 13C to study pyrolysis final effects on bichar stability. In: MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 16., 2012, Hangzhou, China. Functions of natural organic matter in changing environment. [S.l.]: Zhejiang University Press: Springer, 2012. p. 567-569. Editado por: Jianming Xu, Jianjun Wu, Yan He.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 14 | |
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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. |
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
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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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