Soil-boron equilibrium reactions

Detalhes bibliográficos
Autor(a) principal: Pavan, Marcos Antonio
Data de Publicação: 2014
Outros Autores: Correa, Antonio Elias
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/13831
Resumo: Boron adsorption characteristics of selected acid soils from Paraná State, Brazil, were evaluated. Equilibrium concentration between soluble B and adsorbed B is consistent with a mechanism described by the Langmuir equation, except that deviations occur at solution concentration greater than 4 mg/l of B. Soils showed variation in their B-adsorption capacity. The maximum B-adsorption capacity of soils was little sensible under pH less than 6.5 but increased markedly in pH between 6.5 to 8.0. Adsorbed boron in the alkaline pH range was released by reacidification to the original soil pH, indicating the reversibility of the fixation reaction. The constant "b" values derived from the Langmuir equation increased with increasing the clay and organic matter content of soils. 
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spelling Soil-boron equilibrium reactionsReações de equilíbrio solo-boromicronutrient; adsorption; Langmuir equation; limemicronutriente; adsorção; equação de Langmuir; calagemBoron adsorption characteristics of selected acid soils from Paraná State, Brazil, were evaluated. Equilibrium concentration between soluble B and adsorbed B is consistent with a mechanism described by the Langmuir equation, except that deviations occur at solution concentration greater than 4 mg/l of B. Soils showed variation in their B-adsorption capacity. The maximum B-adsorption capacity of soils was little sensible under pH less than 6.5 but increased markedly in pH between 6.5 to 8.0. Adsorbed boron in the alkaline pH range was released by reacidification to the original soil pH, indicating the reversibility of the fixation reaction. The constant "b" values derived from the Langmuir equation increased with increasing the clay and organic matter content of soils. Foram avaliadas as características da adsorção de B por alguns solos agrícolas do Paraná. O equilíbrio entre os teores de B solúvel com o adsorvido pode ser descrito pela equação de Langmuir apenas para concentrações diluídas de B na solução (<4 mg/l de B). Os solos estudados apresentaram variações na capacidade de adsorção em função das suas características físicas e químicas. A máxima capacidade de adsorção de B pelos solos foi pouco sensível em pH inferior a 6,5 e aumentou marcadamente na faixa de pH entre 6,5 a 8,0. A reacidificação do solo ao pH original causou aumentos nos teores de B-solúvel próximos aos valores iniciais, indicando a reversibilidade da reação de adsorção. Os valores da constante "b" derivada da equação de Langmuir aumentou com a elevação nos teores de argila e matéria orgânica dos solos. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPavan, Marcos AntonioCorrea, Antonio Elias2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13831Pesquisa Agropecuaria Brasileira; v.23, n.3, mar. 1988; 261-269Pesquisa Agropecuária Brasileira; v.23, n.3, mar. 1988; 261-2691678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13831/7849info:eu-repo/semantics/openAccess2014-09-08T17:55:52Zoai:ojs.seer.sct.embrapa.br:article/13831Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-08T17:55:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Soil-boron equilibrium reactions
Reações de equilíbrio solo-boro
title Soil-boron equilibrium reactions
spellingShingle Soil-boron equilibrium reactions
Pavan, Marcos Antonio
micronutrient; adsorption; Langmuir equation; lime
micronutriente; adsorção; equação de Langmuir; calagem
title_short Soil-boron equilibrium reactions
title_full Soil-boron equilibrium reactions
title_fullStr Soil-boron equilibrium reactions
title_full_unstemmed Soil-boron equilibrium reactions
title_sort Soil-boron equilibrium reactions
author Pavan, Marcos Antonio
author_facet Pavan, Marcos Antonio
Correa, Antonio Elias
author_role author
author2 Correa, Antonio Elias
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Pavan, Marcos Antonio
Correa, Antonio Elias
dc.subject.por.fl_str_mv micronutrient; adsorption; Langmuir equation; lime
micronutriente; adsorção; equação de Langmuir; calagem
topic micronutrient; adsorption; Langmuir equation; lime
micronutriente; adsorção; equação de Langmuir; calagem
description Boron adsorption characteristics of selected acid soils from Paraná State, Brazil, were evaluated. Equilibrium concentration between soluble B and adsorbed B is consistent with a mechanism described by the Langmuir equation, except that deviations occur at solution concentration greater than 4 mg/l of B. Soils showed variation in their B-adsorption capacity. The maximum B-adsorption capacity of soils was little sensible under pH less than 6.5 but increased markedly in pH between 6.5 to 8.0. Adsorbed boron in the alkaline pH range was released by reacidification to the original soil pH, indicating the reversibility of the fixation reaction. The constant "b" values derived from the Langmuir equation increased with increasing the clay and organic matter content of soils. 
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
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/13831
url https://seer.sct.embrapa.br/index.php/pab/article/view/13831
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/13831/7849
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.23, n.3, mar. 1988; 261-269
Pesquisa Agropecuária Brasileira; v.23, n.3, mar. 1988; 261-269
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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