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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 biochar-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 02261naa a2200241 a 4500
001 1966320
005 2015-02-19
008 2013 bl uuuu u00u1 u #d
100 1 $aMORALES, M. M.
245 $aSorption and desorption of phosphate on biochar and biochar-soil mixtures.$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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Embrapa Florestas (CNPF) |
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| 5. |  | SILVA, E. F. da; NUNES, F. C.; CUNHA, T. J. F.; VILAS BOAS, G. da S.; CARVALHO, J. J. S.; MOREIRA, G. S.; ANGELI, A. Características, morfogênese e morfodinâmica dos Tabuleiros Costeiros e suas implicações nas coberturas pedológicas do litoral Norte da Bahia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. Uberlândia: SBCS: UFU: ICIAG, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 7. | | NUNES, F. C.; VILAS BOAS, G. da S.; SILVA, E. F. da; CUNHA, T. J. F.; CARVALHO, J. J. S.; ANGELI, A. Faciologia e análise tectônica de materiais de origem dos solos de tabuleiros costeiros no litoral Norte da Bahia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. Uberlândia: SBCS: UFU: ICIAG, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido; Embrapa Solos. |
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| 8. | | NUNES, F. C.; MOREIRA, G. S.; VILAS BOAS, G. da S.; SANTOS, F. F. N. dos; CALDERANO, S. B.; SILVA, E. F. da. Fragipãs e Duripãs: estruturas pedogenéticas ou sedimentares? In: CONGRESSO BRASILEIRO DE CIÊNCIAS DO SOLO, 34., 2013. Florianópolis. Anais... Viçosa, MG: Sociedade Brasileira de ciência do solo, 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 9. | | NUNES, F. C.; SILVA, E. F. da; CUNHA, T. J. F.; VILAS BOAS, G. da S.; CARVALHO, J. J. S.; ANGELI, A. Solos com horizontes coesos desenvolvidos sobre diferentes litofácies do grupo Barreiras no Litoral Norte da Bahia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. Uberlândia: SBCS: UFU: ICIAG, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 10. | | CALFA, C. H.; MACÊDO, P. V. de; PEIXOTO, D. S.; SILVA, E. O. da; VILAS BOAS, G. da S.; REZENDE, J. de O.; SOUZA, L. da S.; LEDO, C. A. da S.; SHIBATA, R. T. Efeito da subsolagem sobre atributos físicos de um latossolo amarelo distrófico argissólico cultivado com citros no estado da Bahia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. Uberlândia: SBCS; UFU; ICIAG, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 10 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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