Sorption and desorption of phosphate on biochar and biochar-soil mixtures

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dc.contributor.authorMorales, M. M.
dc.contributor.authorComerford, N.
dc.contributor.authorGuerrini, Iraê Amaral [UNESP]
dc.contributor.authorFalcão, N. P S
dc.contributor.authorReeves, J. B.
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.date.accessioned2014-05-27T11:30:33Z
dc.date.available2014-05-27T11:30:33Z
dc.date.issued2013-09-01
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.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.format.extent306-314
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.doi10.1111/sum.12047
dc.identifier.issn0266-0032
dc.identifier.issn1475-2743
dc.identifier.scopus2-s2.0-84884206154
dc.identifier.urihttp://hdl.handle.net/11449/76451
dc.identifier.wosWOS:000324301800002
dc.language.isoeng
dc.relation.ispartofSoil Use and Management
dc.relation.ispartofjcr1.336
dc.relation.ispartofsjr0,733
dc.relation.ispartofsjr0,733
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBiochar
dc.subjectDesorption
dc.subjectPhosphorus
dc.subjectSorption
dc.titleSorption and desorption of phosphate on biochar and biochar-soil mixturesen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
unesp.author.orcid0000-0002-1336-0318[3]
unesp.author.orcid0000-0001-5579-0861[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentSolos e Recursos Ambientais - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas