Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution

Detalhes bibliográficos
Autor(a) principal: Leal, Jair Rocha
Data de Publicação: 2014
Outros Autores: Velloso, Ary Carlos X.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/17413
Resumo: Experiments were carried out in four oxisols under cerrado vegetation (savannah) to investigate the reversibility of the adsorption isotherm with respect to pH of the equilibrium solution. The adsorbed phosphate was apparently reversible with respect to pH value for the change from pH 4 to 7. Soils containing phosphate previously adsorbed showed a desorption of the order 14% to 28%, for the change from pH 4 to 7.
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spelling Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solutionDessorção do fosfato adsorvido em latossolos sob vegetação de cerrado. II. Reversibilidade da isoterma de adsorção de fosfato em relação ao pH solução em equilíbrioExperiments were carried out in four oxisols under cerrado vegetation (savannah) to investigate the reversibility of the adsorption isotherm with respect to pH of the equilibrium solution. The adsorbed phosphate was apparently reversible with respect to pH value for the change from pH 4 to 7. Soils containing phosphate previously adsorbed showed a desorption of the order 14% to 28%, for the change from pH 4 to 7.Foi estudada a influência do pH na adsorção de fosfato em latossolos sob vegetação de cerrado, através do equilíbrio dos solos com soluções de KH2PO4 de concentrações crescentes (1 X 10-4 a 8 X 10-4 M), a 25°C, em pH 4 e pH 7, bem como avaliada a dessorção do fosfato adsorvido a pH 4 ao se reajustar o pH da solução de 4 para 7 e estabelecer novo equilíbrio. O pH tem grande influência sobre a adsorção máxima de fosfato dos latossolos, diminuindo a adsorção com a elevação do pH. Ao se reajustar o pH da solução em equilíbrio de 4 para 7 foi obtida uma dessorção do fosfato anteriormente adsorvido, da ordem de 14 a 28%. A menor dessorção mostrou tendências de estar relacionadas aos maiores teores de óxidos amorfos de alumínio presentes.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraLeal, Jair RochaVelloso, Ary Carlos X.2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17413Pesquisa Agropecuaria Brasileira; v.8, n.7, 1973: Série Agronomia; 89-92Pesquisa Agropecuária Brasileira; v.8, n.7, 1973: Série Agronomia; 89-921678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17413/11677info:eu-repo/semantics/openAccess2014-04-15T18:48:36Zoai:ojs.seer.sct.embrapa.br:article/17413Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T18:48:36Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
Dessorção do fosfato adsorvido em latossolos sob vegetação de cerrado. II. Reversibilidade da isoterma de adsorção de fosfato em relação ao pH solução em equilíbrio
title Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
spellingShingle Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
Leal, Jair Rocha
title_short Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
title_full Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
title_fullStr Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
title_full_unstemmed Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
title_sort Desorption of phosphate in oxisols covered by humid brushland ( savannah). II. The reversibility of the phosphate adsorption isotherm with respect to the pH of the equilibrium solution
author Leal, Jair Rocha
author_facet Leal, Jair Rocha
Velloso, Ary Carlos X.
author_role author
author2 Velloso, Ary Carlos X.
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Leal, Jair Rocha
Velloso, Ary Carlos X.
dc.subject.none.fl_str_mv

description Experiments were carried out in four oxisols under cerrado vegetation (savannah) to investigate the reversibility of the adsorption isotherm with respect to pH of the equilibrium solution. The adsorbed phosphate was apparently reversible with respect to pH value for the change from pH 4 to 7. Soils containing phosphate previously adsorbed showed a desorption of the order 14% to 28%, for the change from pH 4 to 7.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-15
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/17413
url https://seer.sct.embrapa.br/index.php/pab/article/view/17413
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/17413/11677
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.8, n.7, 1973: Série Agronomia; 89-92
Pesquisa Agropecuária Brasileira; v.8, n.7, 1973: Série Agronomia; 89-92
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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