HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016001001215 |
Resumo: | The use of controlled release fertilizers is a trend for improving productivity, reducing costs and environmental pollution. Such materials release gradually the nutrients to the plant in order to supply its requirement and are an alternative to improve fertilization. The preparation of a microsphere from natural materials (chitosan and montmorilonite clay) added with nutrients, according to the needs of plants nutritional, is one of the main motivations of this work. The addition of lamellar silicates as natural clays is a promising alternative to increase water and chemical compounds sorption capacity. In the present chitosan/montmorilonite clay composites were prepared via inversion phase and thermal, structural and morphologically studies were performed. The release of the KNO3 was realized in water using conductimetry and time domain reflectometry technique was used to monitor the in situ release in soil. Double coated microspheres provide the better nutrient encapsulation and a swelling of 200% was observed. The release was influenced by pH and fast release was observed for pH 4 and 5.5. According to the soil tests a slow release was observed since the KNO3 delivery was accompanied during 60 days showing higher values in the first ten days and a constant value until 60 days. |
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HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIOControlled ferti-releasenutrientagricultural practicesTDR techniqueThe use of controlled release fertilizers is a trend for improving productivity, reducing costs and environmental pollution. Such materials release gradually the nutrients to the plant in order to supply its requirement and are an alternative to improve fertilization. The preparation of a microsphere from natural materials (chitosan and montmorilonite clay) added with nutrients, according to the needs of plants nutritional, is one of the main motivations of this work. The addition of lamellar silicates as natural clays is a promising alternative to increase water and chemical compounds sorption capacity. In the present chitosan/montmorilonite clay composites were prepared via inversion phase and thermal, structural and morphologically studies were performed. The release of the KNO3 was realized in water using conductimetry and time domain reflectometry technique was used to monitor the in situ release in soil. Double coated microspheres provide the better nutrient encapsulation and a swelling of 200% was observed. The release was influenced by pH and fast release was observed for pH 4 and 5.5. According to the soil tests a slow release was observed since the KNO3 delivery was accompanied during 60 days showing higher values in the first ten days and a constant value until 60 days.Sociedade Brasileira de Química2016-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016001001215Química Nova v.39 n.10 2016reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20160133info:eu-repo/semantics/openAccessMessa,Lucas L.Froes,José DanielSouza,Claudinei F.Faez,Roselenapor2016-12-20T00:00:00Zoai:scielo:S0100-40422016001001215Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2016-12-20T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
title |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
spellingShingle |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO Messa,Lucas L. Controlled ferti-release nutrient agricultural practices TDR technique |
title_short |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
title_full |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
title_fullStr |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
title_full_unstemmed |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
title_sort |
HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO |
author |
Messa,Lucas L. |
author_facet |
Messa,Lucas L. Froes,José Daniel Souza,Claudinei F. Faez,Roselena |
author_role |
author |
author2 |
Froes,José Daniel Souza,Claudinei F. Faez,Roselena |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Messa,Lucas L. Froes,José Daniel Souza,Claudinei F. Faez,Roselena |
dc.subject.por.fl_str_mv |
Controlled ferti-release nutrient agricultural practices TDR technique |
topic |
Controlled ferti-release nutrient agricultural practices TDR technique |
description |
The use of controlled release fertilizers is a trend for improving productivity, reducing costs and environmental pollution. Such materials release gradually the nutrients to the plant in order to supply its requirement and are an alternative to improve fertilization. The preparation of a microsphere from natural materials (chitosan and montmorilonite clay) added with nutrients, according to the needs of plants nutritional, is one of the main motivations of this work. The addition of lamellar silicates as natural clays is a promising alternative to increase water and chemical compounds sorption capacity. In the present chitosan/montmorilonite clay composites were prepared via inversion phase and thermal, structural and morphologically studies were performed. The release of the KNO3 was realized in water using conductimetry and time domain reflectometry technique was used to monitor the in situ release in soil. Double coated microspheres provide the better nutrient encapsulation and a swelling of 200% was observed. The release was influenced by pH and fast release was observed for pH 4 and 5.5. According to the soil tests a slow release was observed since the KNO3 delivery was accompanied during 60 days showing higher values in the first ten days and a constant value until 60 days. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016001001215 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016001001215 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.21577/0100-4042.20160133 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.39 n.10 2016 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318117933809664 |