TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/2418 |
Resumo: | The state of Goiás is rich in monocalcic phosphate, which is used as fertilizer and has low price, in order to change it to bicalcic phosphate, which has high price and is used for cattle feeding. A new technique of bicalcic obtention was developed from the monocalcic, and not from the phosphatic rocks or from the calcium oxide reaction with sulphuric acid. The methodology applied was the following: Preparation of the samples trying to obtain them with contents of free acidity varying from one to six in function of sulphuric acid (samples which are called T1, T2......T6 respectively). After obtaining the wished degrees of acidity, the thermic treatment was given, that is, the samples were subjected to temperatures, such as 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 260, 280 and 300 degrees centigrade, in an exposition time of 20, 30 and 40 minutes. At the end, the samples were analyzed in order to dose the contents of soluble P205 in 2% citric acid. Through the analysis of these contents, it was concluded that from the treatments made, the most efficient method to transform the monocalcic phosphate in bicalcic was the 5 treatments with the exposition time of 40 minutes, under the temperature of 280°C. |
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TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATETRANSFORMAÇÃO DO FOSFATO MONOCÁLCICO EM FOSFATO BICÁLCICO The state of Goiás is rich in monocalcic phosphate, which is used as fertilizer and has low price, in order to change it to bicalcic phosphate, which has high price and is used for cattle feeding. A new technique of bicalcic obtention was developed from the monocalcic, and not from the phosphatic rocks or from the calcium oxide reaction with sulphuric acid. The methodology applied was the following: Preparation of the samples trying to obtain them with contents of free acidity varying from one to six in function of sulphuric acid (samples which are called T1, T2......T6 respectively). After obtaining the wished degrees of acidity, the thermic treatment was given, that is, the samples were subjected to temperatures, such as 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 260, 280 and 300 degrees centigrade, in an exposition time of 20, 30 and 40 minutes. At the end, the samples were analyzed in order to dose the contents of soluble P205 in 2% citric acid. Through the analysis of these contents, it was concluded that from the treatments made, the most efficient method to transform the monocalcic phosphate in bicalcic was the 5 treatments with the exposition time of 40 minutes, under the temperature of 280°C. O Estado de Goiás é rico em fosfato monocálcico (de baixo preço), o qual é usado como adubo. Com a finalidade de transformá-1o em fosfato bicálcico (de preço elevado) e utilizá-lo na alimentação de bovinos, desenvolveu-se nova técnica de obtenção do bicálcico, à partir do monocálcico, e não a partir da rocha fosfático ou da reação do óxido de cálcio com ácido sulfúrico. A metodologia aplicada foi a seguinte: preparo das amostras visando a obtê-las com teores de acidez livre variando de 1 a 6 em função do ácido sulfúrico (amostras estas chamadas de T1, T2, ..... T6 respectivamente). Após obtidos os graus de acidez desejados, iniciaram-se os tratamentos térmicos das mesmas, ou seja, as amostras foram submetidas às temperaturas de 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 260, 280 e 300 graus centígrados durante tempos de exposição de 20, 30 e 40 minutos. Finalmente, as amostras foram analisadas a fim de se obter os teores de P205 solúvel em água e em ácido cítrico a 2%. Pelas aná1ises desses teores, concluiu-se o seguinte: dos tratamentos efetivados, o que apresentou maior eficiência de transformação do fosfato monocálcico para bicálcico foi o denominado de T1 com tempo de exposição de 40 minutos sob a temperatura de 280°C.Escola de Agronomia - Universidade Federal de Goiás2007-11-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/2418Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 12, n. 1, Jan./Dec. 1982; 21-30Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 12, n. 1, jan./dez. 1982; 21-30Pesquisa Agropecuária Tropical; v. 12, n. 1, jan./dez. 1982; 21-301983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/2418/2383Milcken, Nelson CalixtoOliveira, Constantino B. deAraújo, Carlos A. deMachado, CelsoDaher, Maria Idalina T.Tavares, Maria Gizelda de O.Tocantins, Terezinha de H. B. O.info:eu-repo/semantics/openAccess2020-02-26T23:51:32Zoai:ojs.revistas.ufg.br:article/2418Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:08.493175Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE TRANSFORMAÇÃO DO FOSFATO MONOCÁLCICO EM FOSFATO BICÁLCICO |
title |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
spellingShingle |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE Milcken, Nelson Calixto |
title_short |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
title_full |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
title_fullStr |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
title_full_unstemmed |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
title_sort |
TRANSFORMATION OF MONOCALCIC PHOSPHATE IN BICALCIC PHOSPHATE |
author |
Milcken, Nelson Calixto |
author_facet |
Milcken, Nelson Calixto Oliveira, Constantino B. de Araújo, Carlos A. de Machado, Celso Daher, Maria Idalina T. Tavares, Maria Gizelda de O. Tocantins, Terezinha de H. B. O. |
author_role |
author |
author2 |
Oliveira, Constantino B. de Araújo, Carlos A. de Machado, Celso Daher, Maria Idalina T. Tavares, Maria Gizelda de O. Tocantins, Terezinha de H. B. O. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Milcken, Nelson Calixto Oliveira, Constantino B. de Araújo, Carlos A. de Machado, Celso Daher, Maria Idalina T. Tavares, Maria Gizelda de O. Tocantins, Terezinha de H. B. O. |
description |
The state of Goiás is rich in monocalcic phosphate, which is used as fertilizer and has low price, in order to change it to bicalcic phosphate, which has high price and is used for cattle feeding. A new technique of bicalcic obtention was developed from the monocalcic, and not from the phosphatic rocks or from the calcium oxide reaction with sulphuric acid. The methodology applied was the following: Preparation of the samples trying to obtain them with contents of free acidity varying from one to six in function of sulphuric acid (samples which are called T1, T2......T6 respectively). After obtaining the wished degrees of acidity, the thermic treatment was given, that is, the samples were subjected to temperatures, such as 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 260, 280 and 300 degrees centigrade, in an exposition time of 20, 30 and 40 minutes. At the end, the samples were analyzed in order to dose the contents of soluble P205 in 2% citric acid. Through the analysis of these contents, it was concluded that from the treatments made, the most efficient method to transform the monocalcic phosphate in bicalcic was the 5 treatments with the exposition time of 40 minutes, under the temperature of 280°C. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-11-19 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/2418 |
url |
https://revistas.ufg.br/pat/article/view/2418 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/2418/2383 |
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 |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 12, n. 1, Jan./Dec. 1982; 21-30 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 12, n. 1, jan./dez. 1982; 21-30 Pesquisa Agropecuária Tropical; v. 12, n. 1, jan./dez. 1982; 21-30 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874814499880960 |