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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/76451
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dc.contributor.authorMorales, M. M.-
dc.contributor.authorComerford, N.-
dc.contributor.authorGuerrini, Iraê Amaral-
dc.contributor.authorFalcão, N. P S-
dc.contributor.authorReeves, J. B.-
dc.date.accessioned2014-05-27T11:30:33Z-
dc.date.accessioned2016-10-25T18:53:36Z-
dc.date.available2014-05-27T11:30:33Z-
dc.date.available2016-10-25T18:53:36Z-
dc.date.issued2013-09-01-
dc.identifierhttp://dx.doi.org/10.1111/sum.12047-
dc.identifier.citationSoil Use and Management, v. 29, n. 3, p. 306-314, 2013.-
dc.identifier.issn0266-0032-
dc.identifier.issn1475-2743-
dc.identifier.urihttp://hdl.handle.net/11449/76451-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/76451-
dc.description.abstractThe 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, Ingá and Embaúba) 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 Ingá 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. © 2013 British Society of Soil Science.en
dc.format.extent306-314-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectBiochar-
dc.subjectDesorption-
dc.subjectPhosphorus-
dc.subjectSorption-
dc.titleSorption and desorption of phosphate on biochar and biochar-soil mixturesen
dc.typeoutro-
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
dc.contributor.institutionUniversity of Florida-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionInstituto Nacional de Pesquisas da Amazônia (INPA)-
dc.contributor.institutionEnvironmental Management and Byproducts Utilization Lab-
dc.description.affiliationEMBRAPA Florestas, Estrada da Ribeira, km111, Colombo, PR, 83411-000-
dc.description.affiliationNorth Florida Research and Education Center University of Florida, 155 Research Road, Quincy, FL, 32351-
dc.description.affiliationDepartamento de Solos e Recursos Ambientais UNESP, Botucatu, São Paulo, 18610-307-
dc.description.affiliationNational Instituto for Amazon Research/INPA, Avenida André Araújo, 2936, Bairro - Aleixo, Manaus, Amazonas, 69060-001-
dc.description.affiliationEnvironmental Management and Byproducts Utilization Lab, Building 308, BARC East, Beltsville, MD, 20705-
dc.description.affiliationUnespDepartamento de Solos e Recursos Ambientais UNESP, Botucatu, São Paulo, 18610-307-
dc.identifier.doi10.1111/sum.12047-
dc.identifier.wosWOS:000324301800002-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofSoil Use and Management-
dc.identifier.scopus2-s2.0-84884206154-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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