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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
16/09/2013 |
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Data da última atualização: |
19/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORALES, M. M.; COMERFORD, N.; GUERRINI, I. A.; FALCÃO, N. P. S.; REEVES, J. B. |
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Afiliação: |
MARINA MOURA MORALES, CNPF; UNIVERSITY OF FLORIDA; UNESP; INPA; ENVIRONMENTAL MANAGEMENT AND BYPRODUCTS UTILIZATION LAB. |
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Título: |
Sorption and desorption of phosphate on biochar and biocha-soil mixtures. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Soil Use and Management, v. 29, p. 306-314, Sept. 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
The term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine how a fast pyrolysis biochar influences these properties in a degraded tropical soil. The fast pyrolysis biochar was a mixture of three separate biochars: sawdust, elephant grass and sugar cane leaves. Three other biochars were made by slow pyrolysis from three Amazonian tree species (Lacre, Inga and Embauba) at three temperatures of formation (400 °C, 500 °C, 600 °C). Inorganic P was added to develop sorption curves and then desorbed to develop desorption curves for all biochar situations. For the slow pyrolysis, the 600 ºC biochar had a reduced capacity to sorb P (4–10 times less) relative to those biochars formed at 400 °C and 500 °C. Conversely, biochar from Inga desorbed the most P. The fast pyrolysis biochar, when mixed with degraded tropical mineral soil, decreased the soil’s P sorption capacity by 55% presumably because of the high soluble, inorganic P prevalent in this biochar (909 mg P/kg of biochar). Phosphorus desorption from the fast pyrolysis biochar/soil mixture not only exhibited a common desorption curve but also buffered the soil solution at a value of ca. 0.2 mg/L. This study shows the diversity in P chemistry that can be expected when biochar is a soil amendment and suggests the potential to develop biochars with properties to meet specific objectives. MenosThe term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine how a fast pyrolysis biochar influences these properties in a degraded tropical soil. The fast pyrolysis biochar was a mixture of three separate biochars: sawdust, elephant grass and sugar cane leaves. Three other biochars were made by slow pyrolysis from three Amazonian tree species (Lacre, Inga and Embauba) at three temperatures of formation (400 °C, 500 °C, 600 °C). Inorganic P was added to develop sorption curves and then desorbed to develop desorption curves for all biochar situations. For the slow pyrolysis, the 600 ºC biochar had a reduced capacity to sorb P (4–10 times less) relative to those biochars formed at 400 °C and 500 °C. Conversely, biochar from Inga desorbed the most P. The fast pyrolysis biochar, when mixed with degraded tropical mineral soil, decreased the soil’s P sorption capacity by 55% presumably because of the high soluble, inorganic P prevalent in this biochar (909 mg P/kg of biochar). Phosphorus desorption from the fast pyrolysis biochar/soil mixture not only exhibited a common desorption curve but also buffered the soil solution at a value of ca. 0.2 mg/L. This study shows the diversity in P chemistry that can be expected when biochar is a soil amendme... Mostrar Tudo |
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Palavras-Chave: |
Biocarvão. |
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Thesagro: |
Fósforo. |
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Thesaurus Nal: |
biochar; desorption; phosphorus; sorption. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02260naa a2200241 a 4500
001 1966320
005 2015-02-19
008 2013 bl uuuu u00u1 u #d
100 1 $aMORALES, M. M.
245 $aSorption and desorption of phosphate on biochar and biocha-soil mixtures.$h[electronic resource]
260 $c2013
520 $aThe term biochar refers to materials with diverse chemical, physical and physicochemical characteristics that have potential as a soil amendment. The purpose of this study was to investigate the P sorption/desorption properties of various slow biochars and one fast pyrolysis biochar and to determine how a fast pyrolysis biochar influences these properties in a degraded tropical soil. The fast pyrolysis biochar was a mixture of three separate biochars: sawdust, elephant grass and sugar cane leaves. Three other biochars were made by slow pyrolysis from three Amazonian tree species (Lacre, Inga and Embauba) at three temperatures of formation (400 °C, 500 °C, 600 °C). Inorganic P was added to develop sorption curves and then desorbed to develop desorption curves for all biochar situations. For the slow pyrolysis, the 600 ºC biochar had a reduced capacity to sorb P (4–10 times less) relative to those biochars formed at 400 °C and 500 °C. Conversely, biochar from Inga desorbed the most P. The fast pyrolysis biochar, when mixed with degraded tropical mineral soil, decreased the soil’s P sorption capacity by 55% presumably because of the high soluble, inorganic P prevalent in this biochar (909 mg P/kg of biochar). Phosphorus desorption from the fast pyrolysis biochar/soil mixture not only exhibited a common desorption curve but also buffered the soil solution at a value of ca. 0.2 mg/L. This study shows the diversity in P chemistry that can be expected when biochar is a soil amendment and suggests the potential to develop biochars with properties to meet specific objectives.
650 $abiochar
650 $adesorption
650 $aphosphorus
650 $asorption
650 $aFósforo
653 $aBiocarvão
700 1 $aCOMERFORD, N.
700 1 $aGUERRINI, I. A.
700 1 $aFALCÃO, N. P. S.
700 1 $aREEVES, J. B.
773 $tSoil Use and Management$gv. 29, p. 306-314, Sept. 2013.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/07/2017 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Local - A |
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Autoria: |
RODDA, M. R. C.; CANELLAS, L.; FAÇANHA, A. R.; ZANDONARDI, D. B.; GUERRA, J. G. M.; ALMEIDA, D. L. de; SANTOS, G. de A. |
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Afiliação: |
JOSE GUILHERME MARINHO GUERRA, CNPAB. |
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Título: |
Estímulo no crescimento e na hidrólise de atp em raízes de alface tratadas com humatos de vermicompostos. II Efeito da fonte de vermicomposto. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa v. 30, n. 4, p. 657-664, ago. 2006 |
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Idioma: |
Português |
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Palavras-Chave: |
Agroecologia; Esterco de curral; Fazendinha Agroecológica do KM 47; Substância húmica; Vermicomposto. |
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Thesagro: |
Alface; Lactuca Sativa. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 00889naa a2200265 a 4500
001 2072844
005 2021-01-11
008 2006 bl --- 0-- u #d
100 1 $aRODDA, M. R. C.
245 $aEstímulo no crescimento e na hidrólise de atp em raízes de alface tratadas com humatos de vermicompostos. II Efeito da fonte de vermicomposto.$h[electronic resource]
260 $c2006
650 $aAlface
650 $aLactuca Sativa
653 $aAgroecologia
653 $aEsterco de curral
653 $aFazendinha Agroecológica do KM 47
653 $aSubstância húmica
653 $aVermicomposto
700 1 $aCANELLAS, L.
700 1 $aFAÇANHA, A. R.
700 1 $aZANDONARDI, D. B.
700 1 $aGUERRA, J. G. M.
700 1 $aALMEIDA, D. L. de
700 1 $aSANTOS, G. de A.
773 $tRevista Brasileira de Ciência do Solo, Viçosa$gv. 30, n. 4, p. 657-664, ago. 2006
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