Charge manipulation and nitrate displacement on B horizons of an Udox soil

Detalhes bibliográficos
Autor(a) principal: Alcântara, Marco Aurélio Kondracki de
Data de Publicação: 2010
Outros Autores: de Camargo, Otávio Antonio
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/1724
Resumo: The objective of this work was to evaluate the influence of pH and of the addition of carbonates, phosphates and sulphates on nitrate movement in columns composed by a subsuperficial horizon of an Udox soil. The experiments were carried out according to the miscible displacement technique. A 10 or 40-mmol L-1 KNO3 solution was used as nitrate pulse. Nitrate breaktrough curves were obtained for all columns. The net charge varied from -24.0 to +35.0 mmolc L-1 in the different treatments. In the treatments that received additions of hydrochloric acid, hydrochloric acid + phosphate, carbonate + phosphate and sulphate nitrate, recovery was greater than the total amount applied as pulse. Carbonate, phosphate and sulphate additions favored nitrate leaching, displacing nitrate breaktrough curves to the left. Soil acidification delayed nitrate movement, displacing breaktrough curves to the right. Soil nitrate movement was more influenced by the pH of the environment and by the presence of carbonates, phosphates and sulphates than by the ionic strength of the pulse.
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spelling Charge manipulation and nitrate displacement on B horizons of an Udox soilManipulação de carga e movimento de nitrato em horizontes B de um Latossolo Vermelhotropical soils; displacement; net charge; variable chargesolos tropicais; deslocamento; carga líquida; carga variávelThe objective of this work was to evaluate the influence of pH and of the addition of carbonates, phosphates and sulphates on nitrate movement in columns composed by a subsuperficial horizon of an Udox soil. The experiments were carried out according to the miscible displacement technique. A 10 or 40-mmol L-1 KNO3 solution was used as nitrate pulse. Nitrate breaktrough curves were obtained for all columns. The net charge varied from -24.0 to +35.0 mmolc L-1 in the different treatments. In the treatments that received additions of hydrochloric acid, hydrochloric acid + phosphate, carbonate + phosphate and sulphate nitrate, recovery was greater than the total amount applied as pulse. Carbonate, phosphate and sulphate additions favored nitrate leaching, displacing nitrate breaktrough curves to the left. Soil acidification delayed nitrate movement, displacing breaktrough curves to the right. Soil nitrate movement was more influenced by the pH of the environment and by the presence of carbonates, phosphates and sulphates than by the ionic strength of the pulse.O objetivo deste trabalho foi avaliar a influência do pH e da adição de carbonatos, fosfatos e sulfatos na movimentação do nitrato, em colunas constituídas do horizonte subsuperficial de um Latossolo Vermelho Acriférrico. Os experimentos foram realizados de acordo com a técnica do deslocamento miscível. Utilizaram-se como pulso de nitrato soluções de KNO3 a 10 ou 40 mmol L-1. Em cada coluna, foram obtidas curvas de transposição do elemento. A carga líquida do solo nos diferentes tratamentos variou de -24,0 a +35,0 mmolc L-1. Nos tratamentos que receberam adição de ácido clorídrico, ácido clorídrico + fosfato, carbonato + fosfato e sulfato, as recuperações de nitrato foram maiores do que o total aplicado no pulso. As adições de carbonatos, fosfato e sulfato favoreceram a lixiviação de nitrato, e deslocaram as curvas de transposição para a esquerda. A acidificação do solo retardou o deslocamento do nitrato, e deslocaram as curvas de transposição para a direita. A movimentação de nitrato no solo foi mais influenciada pelo pH do meio, pela presença de carbonatos, fosfatos e sulfatos, do que pela força iônica do pulso.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFapesp, CNPqAlcântara, Marco Aurélio Kondracki dede Camargo, Otávio Antonio2010-12-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/1724Pesquisa Agropecuaria Brasileira; v.45, n.2, fev. 2010; 204-212Pesquisa Agropecuária Brasileira; v.45, n.2, fev. 2010; 204-2121678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/1724/6007https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/1724/1126info:eu-repo/semantics/openAccess2014-10-16T20:10:23Zoai:ojs.seer.sct.embrapa.br:article/1724Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-16T20:10:23Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Charge manipulation and nitrate displacement on B horizons of an Udox soil
Manipulação de carga e movimento de nitrato em horizontes B de um Latossolo Vermelho
title Charge manipulation and nitrate displacement on B horizons of an Udox soil
spellingShingle Charge manipulation and nitrate displacement on B horizons of an Udox soil
Alcântara, Marco Aurélio Kondracki de
tropical soils; displacement; net charge; variable charge
solos tropicais; deslocamento; carga líquida; carga variável
title_short Charge manipulation and nitrate displacement on B horizons of an Udox soil
title_full Charge manipulation and nitrate displacement on B horizons of an Udox soil
title_fullStr Charge manipulation and nitrate displacement on B horizons of an Udox soil
title_full_unstemmed Charge manipulation and nitrate displacement on B horizons of an Udox soil
title_sort Charge manipulation and nitrate displacement on B horizons of an Udox soil
author Alcântara, Marco Aurélio Kondracki de
author_facet Alcântara, Marco Aurélio Kondracki de
de Camargo, Otávio Antonio
author_role author
author2 de Camargo, Otávio Antonio
author2_role author
dc.contributor.none.fl_str_mv
Fapesp, CNPq
dc.contributor.author.fl_str_mv Alcântara, Marco Aurélio Kondracki de
de Camargo, Otávio Antonio
dc.subject.por.fl_str_mv tropical soils; displacement; net charge; variable charge
solos tropicais; deslocamento; carga líquida; carga variável
topic tropical soils; displacement; net charge; variable charge
solos tropicais; deslocamento; carga líquida; carga variável
description The objective of this work was to evaluate the influence of pH and of the addition of carbonates, phosphates and sulphates on nitrate movement in columns composed by a subsuperficial horizon of an Udox soil. The experiments were carried out according to the miscible displacement technique. A 10 or 40-mmol L-1 KNO3 solution was used as nitrate pulse. Nitrate breaktrough curves were obtained for all columns. The net charge varied from -24.0 to +35.0 mmolc L-1 in the different treatments. In the treatments that received additions of hydrochloric acid, hydrochloric acid + phosphate, carbonate + phosphate and sulphate nitrate, recovery was greater than the total amount applied as pulse. Carbonate, phosphate and sulphate additions favored nitrate leaching, displacing nitrate breaktrough curves to the left. Soil acidification delayed nitrate movement, displacing breaktrough curves to the right. Soil nitrate movement was more influenced by the pH of the environment and by the presence of carbonates, phosphates and sulphates than by the ionic strength of the pulse.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-28
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/1724
url https://seer.sct.embrapa.br/index.php/pab/article/view/1724
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/1724/6007
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/1724/1126
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.45, n.2, fev. 2010; 204-212
Pesquisa Agropecuária Brasileira; v.45, n.2, fev. 2010; 204-212
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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