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28. | | INACIO, C. de T.; URQUIAGA, S.; CHALK, P. M.; MATA, M. G. F.; SOUZA, P. O. Identifying N fertilizer regime and vegetable production system in tropical Brazil using 15 N natural abundance. Journal of the Science of Food and Agriculture, London, UK, v. 95, p. 3025-3032, 2015. Biblioteca(s): Embrapa Agrobiologia. |
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35. | | INACIO, C. de T.; URQUIAGA, S.; CHALK, P. M.; MATA, M. G. F.; SOUZA, P. O. Nitrogen isotopic composition of n-sources, vegetables and soil from two organic farming systems. In: NITROGEN WORKSHOP: THE NITROGEN CHALLENGE: BUILDING A BLUEPRINT FOR NITROGEN USE EFFICIENCY AND FOOD SECURITY, 18., 2014, Lisboa. Resumo... Lisboa: Instituto Superior de Agronomia, CEER: Biosystens Engineering; Évora: Nacional de Ivestigação Agrícola e Veterinária; Viena: International Nitrogen Initiative, 2014. Biblioteca(s): Embrapa Solos. |
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36. | | INACIO, C. T.; URQUIAGA, S.; CHALK, P. M.; ALVES, B. J. R. Nitrogen loss (NH3, N2O) patterns in bench-scale composting. In: SIMPÓSIO INTERNACIONAL SOBRE GERENCIAMENTO DE RESÍDUOS AGROPECUÁRIOS E AGROINDUSTRIAIS, 4., 2015, Rio de Janeiro. Anais... Brasília, DF: Embrapa, 2015. Biblioteca(s): Embrapa Solos. |
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Registros recuperados : 56 | |
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Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
02/02/2016 |
Data da última atualização: |
02/02/2016 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
INACIO, C. T.; URQUIAGA, S.; CHALK, P. M.; ALVES, B. J. R. |
Afiliação: |
CAIO DE TEVES INACIO, CNPS; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; P. M. CHALK; BRUNO JOSE RODRIGUES ALVES, CNPAB. |
Título: |
Nitrogen loss (NH3, N2O) patterns in bench-scale composting. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE GERENCIAMENTO DE RESÍDUOS AGROPECUÁRIOS E AGROINDUSTRIAIS, 4., 2015, Rio de Janeiro. Anais... Brasília, DF: Embrapa, 2015. |
Idioma: |
Inglês |
Conteúdo: |
Nitrogen (N) losses during composting reduce the value of the end product as a fertilizer. Nitrogen is lost during composting mainly by ammonia (NH3) volatilization in the thermophilic phase. We used three bench-scale aerobic bioreactors with a controlled temperature difference (CDT) system as an experimental approach to investigate the pattern of N losses during composting. N2O peak emission occurred much earlier (7h) than NH3 volatilization (48-60h) during the thermophilic phase (~55°C) of bench-scale composting. The NH3 volatilization peak rate occurred following the greater biological activity (O2 consumed/CO2 evolved) at 40°C which could coincide with greater ammonification, but immobilization of NH4+/NH3 also occurs at this point affecting NH3 volatilization. Differences in temperature curves and accumulated NH3-N were related to the biological activity in each vessel. Therefore, O2 consumed/CO2 evolved measurements must be part of the evaluation of composting in further studies for comparisons of techniques to reduce NH3 volatilization |
Palavras-Chave: |
Biorreatores; Estrume de cavalo; Método respirométrico. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138269/1/2015-158.pdf
|
Marc: |
LEADER 01697nam a2200181 a 4500 001 2035878 005 2016-02-02 008 2015 bl uuuu u00u1 u #d 100 1 $aINACIO, C. T. 245 $aNitrogen loss (NH3, N2O) patterns in bench-scale composting.$h[electronic resource] 260 $aIn: SIMPÓSIO INTERNACIONAL SOBRE GERENCIAMENTO DE RESÍDUOS AGROPECUÁRIOS E AGROINDUSTRIAIS, 4., 2015, Rio de Janeiro. Anais... Brasília, DF: Embrapa$c2015 520 $aNitrogen (N) losses during composting reduce the value of the end product as a fertilizer. Nitrogen is lost during composting mainly by ammonia (NH3) volatilization in the thermophilic phase. We used three bench-scale aerobic bioreactors with a controlled temperature difference (CDT) system as an experimental approach to investigate the pattern of N losses during composting. N2O peak emission occurred much earlier (7h) than NH3 volatilization (48-60h) during the thermophilic phase (~55°C) of bench-scale composting. The NH3 volatilization peak rate occurred following the greater biological activity (O2 consumed/CO2 evolved) at 40°C which could coincide with greater ammonification, but immobilization of NH4+/NH3 also occurs at this point affecting NH3 volatilization. Differences in temperature curves and accumulated NH3-N were related to the biological activity in each vessel. Therefore, O2 consumed/CO2 evolved measurements must be part of the evaluation of composting in further studies for comparisons of techniques to reduce NH3 volatilization 653 $aBiorreatores 653 $aEstrume de cavalo 653 $aMétodo respirométrico 700 1 $aURQUIAGA, S. 700 1 $aCHALK, P. M. 700 1 $aALVES, B. J. R.
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