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| Registros recuperados : 3 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
04/12/2014 |
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Data da última atualização: |
04/12/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CERQUEIRA, W. V.; RITTL, T. F.; PINHEIRO, M. A.; PEREIRA NETTO, A. D.; NOVOTNY, E. H. |
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Afiliação: |
W. V. CERQUEIRA, UFF; T. F. RITTL, WAGENINGEN UNIVERSITY; M. A. PINHEIRO, UFF; A. D. PEREIRA NETTO, UFF; ETELVINO HENRIQUE NOVOTNY, CNPS. |
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Título: |
Effects of pyrogenic carbon feedstock and pyrolysis temperature on the oxidation kinetic and benzene polycarboxilic acids formation. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 17., 2014, Ioannina. Natural organic matter: structure-dynamics innovative applications: book of abstracts. Ioannina: University of Ioannina, 2014. p. 192-193. |
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Idioma: |
Inglês |
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Conteúdo: |
Pyrogenic carbon (PyC) has a high potential to soil carbon sequestration. Among the methods used to quantify PyC, the method of benzene polycarboxilic acids (BPCA) is well-established. The oxidation step of this method is essential for a reliable PyC quantification. Up to now there are no studies on the influence of feedstock and pyrolysis temperature in the oxidation kinetic of PyC and BPCA formation; and then these are the purposes of this study. For this, different PyC were oxidised at 170 ºC during different times. The data showed similar kinetic curves for all PyC, but different BPCA production depending upon feedstock and pyrolysis temperature. All PyC showed maximum production of BPCA at 6-8 h under nitric acid oxidation at 170 ºC. We concluded that 8 h of nitric acid oxidation at 170 ºC produces a reliable data to PyC quantification, thus representing a robust method. |
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Palavras-Chave: |
Ácido benzenopolicarboxílico; Cinética de oxidação; Quantificação de carbono pirogênico. |
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Thesagro: |
Ácido; Carbono; Oxidação. |
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Thesaurus NAL: |
Acids; biochar; Carbon; Kinetics; Oxidation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113022/1/IHSS-Meeting-p.-192-193.pdf
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Marc: |
LEADER 01941nam a2200289 a 4500
001 2001606
005 2014-12-04
008 2014 bl uuuu u00u1 u #d
100 1 $aCERQUEIRA, W. V.
245 $aEffects of pyrogenic carbon feedstock and pyrolysis temperature on the oxidation kinetic and benzene polycarboxilic acids formation.$h[electronic resource]
260 $aIn: MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 17., 2014, Ioannina. Natural organic matter: structure-dynamics innovative applications: book of abstracts. Ioannina: University of Ioannina, 2014. p. 192-193.$c2014
520 $aPyrogenic carbon (PyC) has a high potential to soil carbon sequestration. Among the methods used to quantify PyC, the method of benzene polycarboxilic acids (BPCA) is well-established. The oxidation step of this method is essential for a reliable PyC quantification. Up to now there are no studies on the influence of feedstock and pyrolysis temperature in the oxidation kinetic of PyC and BPCA formation; and then these are the purposes of this study. For this, different PyC were oxidised at 170 ºC during different times. The data showed similar kinetic curves for all PyC, but different BPCA production depending upon feedstock and pyrolysis temperature. All PyC showed maximum production of BPCA at 6-8 h under nitric acid oxidation at 170 ºC. We concluded that 8 h of nitric acid oxidation at 170 ºC produces a reliable data to PyC quantification, thus representing a robust method.
650 $aAcids
650 $abiochar
650 $aCarbon
650 $aKinetics
650 $aOxidation
650 $aÁcido
650 $aCarbono
650 $aOxidação
653 $aÁcido benzenopolicarboxílico
653 $aCinética de oxidação
653 $aQuantificação de carbono pirogênico
700 1 $aRITTL, T. F.
700 1 $aPINHEIRO, M. A.
700 1 $aPEREIRA NETTO, A. D.
700 1 $aNOVOTNY, E. H.
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