Potassium adsorption in soil cultivated with sugarcane

Detalhes bibliográficos
Autor(a) principal: FREITAS,JOYCYELY M.A.S.
Data de Publicação: 2018
Outros Autores: NETTO,ANDRÉ M., CORRÊA,MARCUS M., XAVIER,BRUNO T.L., ASSIS,FERNANDO X. DE
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100541
Resumo: ABSTRACT Vinasse is a byproduct of the process of distillation of sugarcane juice for the manufacture of sugar and alcohol. Because it is rich in nutrients, mainly potassium (K), is used as fertilizer and applied via fertigation, without concerning for the fate of this compound in the soil. Thus, the objective of the study was to evaluate the interactions of the potassium ion (K+), applied via vinasse in a soil representative of the sugarcane zone of the State of Pernambuco using adsorption isotherms. The methodology was based on physical, chemical and soil mineralogical characterization, as well as equilibrium batch tests, where the experimental curves were fitted by Langmuir and Freundlich isotherm models. The results allowed to infer that the Freundlich model showed better fit of the curve in both forms: linear and non-linear (direct fit); the non-linear model was selected due to the values ​​of coefficient of determination (R²). The interaction between potassium and soil occurred mainly with organic matter and the presence of soil kaolinite, because they showed negative ions on the external surface, thereby promoting potassium adsorption. Soil potassium adsorption capacity was higher for the first layer (0-20 cm) and decreased along the depth profile.
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spelling Potassium adsorption in soil cultivated with sugarcaneSugarcanevinasseLangmuir and Freundlich isothermssorptionABSTRACT Vinasse is a byproduct of the process of distillation of sugarcane juice for the manufacture of sugar and alcohol. Because it is rich in nutrients, mainly potassium (K), is used as fertilizer and applied via fertigation, without concerning for the fate of this compound in the soil. Thus, the objective of the study was to evaluate the interactions of the potassium ion (K+), applied via vinasse in a soil representative of the sugarcane zone of the State of Pernambuco using adsorption isotherms. The methodology was based on physical, chemical and soil mineralogical characterization, as well as equilibrium batch tests, where the experimental curves were fitted by Langmuir and Freundlich isotherm models. The results allowed to infer that the Freundlich model showed better fit of the curve in both forms: linear and non-linear (direct fit); the non-linear model was selected due to the values ​​of coefficient of determination (R²). The interaction between potassium and soil occurred mainly with organic matter and the presence of soil kaolinite, because they showed negative ions on the external surface, thereby promoting potassium adsorption. Soil potassium adsorption capacity was higher for the first layer (0-20 cm) and decreased along the depth profile.Academia Brasileira de Ciências2018-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100541Anais da Academia Brasileira de Ciências v.90 n.1 2018reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765201720160910info:eu-repo/semantics/openAccessFREITAS,JOYCYELY M.A.S.NETTO,ANDRÉ M.CORRÊA,MARCUS M.XAVIER,BRUNO T.L.ASSIS,FERNANDO X. DEeng2018-04-25T00:00:00Zoai:scielo:S0001-37652018000100541Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2018-04-25T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Potassium adsorption in soil cultivated with sugarcane
title Potassium adsorption in soil cultivated with sugarcane
spellingShingle Potassium adsorption in soil cultivated with sugarcane
FREITAS,JOYCYELY M.A.S.
Sugarcane
vinasse
Langmuir and Freundlich isotherms
sorption
title_short Potassium adsorption in soil cultivated with sugarcane
title_full Potassium adsorption in soil cultivated with sugarcane
title_fullStr Potassium adsorption in soil cultivated with sugarcane
title_full_unstemmed Potassium adsorption in soil cultivated with sugarcane
title_sort Potassium adsorption in soil cultivated with sugarcane
author FREITAS,JOYCYELY M.A.S.
author_facet FREITAS,JOYCYELY M.A.S.
NETTO,ANDRÉ M.
CORRÊA,MARCUS M.
XAVIER,BRUNO T.L.
ASSIS,FERNANDO X. DE
author_role author
author2 NETTO,ANDRÉ M.
CORRÊA,MARCUS M.
XAVIER,BRUNO T.L.
ASSIS,FERNANDO X. DE
author2_role author
author
author
author
dc.contributor.author.fl_str_mv FREITAS,JOYCYELY M.A.S.
NETTO,ANDRÉ M.
CORRÊA,MARCUS M.
XAVIER,BRUNO T.L.
ASSIS,FERNANDO X. DE
dc.subject.por.fl_str_mv Sugarcane
vinasse
Langmuir and Freundlich isotherms
sorption
topic Sugarcane
vinasse
Langmuir and Freundlich isotherms
sorption
description ABSTRACT Vinasse is a byproduct of the process of distillation of sugarcane juice for the manufacture of sugar and alcohol. Because it is rich in nutrients, mainly potassium (K), is used as fertilizer and applied via fertigation, without concerning for the fate of this compound in the soil. Thus, the objective of the study was to evaluate the interactions of the potassium ion (K+), applied via vinasse in a soil representative of the sugarcane zone of the State of Pernambuco using adsorption isotherms. The methodology was based on physical, chemical and soil mineralogical characterization, as well as equilibrium batch tests, where the experimental curves were fitted by Langmuir and Freundlich isotherm models. The results allowed to infer that the Freundlich model showed better fit of the curve in both forms: linear and non-linear (direct fit); the non-linear model was selected due to the values ​​of coefficient of determination (R²). The interaction between potassium and soil occurred mainly with organic matter and the presence of soil kaolinite, because they showed negative ions on the external surface, thereby promoting potassium adsorption. Soil potassium adsorption capacity was higher for the first layer (0-20 cm) and decreased along the depth profile.
publishDate 2018
dc.date.none.fl_str_mv 2018-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100541
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100541
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0001-3765201720160910
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.90 n.1 2018
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
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instname_str Academia Brasileira de Ciências (ABC)
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reponame_str Anais da Academia Brasileira de Ciências (Online)
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repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
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