Removal of copper in cachaças using clays

Detalhes bibliográficos
Autor(a) principal: Duarte, Felipe Cimino
Data de Publicação: 2014
Outros Autores: Cardoso, Maria das Graças, Magriotis, Zuy Maria, Santiago, Wilder Douglas, Mendonça, João Guilherme Pereira, Rodrigues, Leonardo Milani Avelar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/37145
Resumo: Increased production and cachaça consumption has stimulated research regarding its quality. It is known that copper can be harmful to human health when it is in concentrated form in the beverage and is ingested in large amounts. Thus, there is a great concern among researchers and producers about the use of adsorbent substances for the removal of excess copper. The kinetic parameters and the adsorption isotherms for copper on kaolinite were studied to evaluate the physical-chemical quality of the cachaça before and after adsorption. K01, K03 and K04 kaolinites presented a maximum adsorption capacity of 97, 95 and 90%, respectively. The kinetic rates followed the pseudo-first-order model, and the adsorption isotherm was best adjusted to the Freundlich model. All the parameters of the control samples were within the limits required by law, except for the aldehydes and copper. After adsorption with clay, the values for some of the parameters were lower and those of others were not significantly different. It was possible to describe 87% of the data with the first and second principal components of the multivariate analysis, and all the samples were different from the control for the parameters analyzed. Thus, these clays can be used for the removal of copper from cachaça, but further studies are necessary.
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spelling Removal of copper in cachaças using claysRemoção de cobre em cachaça usando argilasBeverageKinetic parametersIsothermsAdsorptionBebidaCinéticaIsotermasAdsorçãoIncreased production and cachaça consumption has stimulated research regarding its quality. It is known that copper can be harmful to human health when it is in concentrated form in the beverage and is ingested in large amounts. Thus, there is a great concern among researchers and producers about the use of adsorbent substances for the removal of excess copper. The kinetic parameters and the adsorption isotherms for copper on kaolinite were studied to evaluate the physical-chemical quality of the cachaça before and after adsorption. K01, K03 and K04 kaolinites presented a maximum adsorption capacity of 97, 95 and 90%, respectively. The kinetic rates followed the pseudo-first-order model, and the adsorption isotherm was best adjusted to the Freundlich model. All the parameters of the control samples were within the limits required by law, except for the aldehydes and copper. After adsorption with clay, the values for some of the parameters were lower and those of others were not significantly different. It was possible to describe 87% of the data with the first and second principal components of the multivariate analysis, and all the samples were different from the control for the parameters analyzed. Thus, these clays can be used for the removal of copper from cachaça, but further studies are necessary.O aumento da produção e consumo de cachaça de alambique tem estimulado a pesquisa sobre a qualidade da bebida. Sabe-se que o cobre, quando encontrado em teor elevado na bebida e ingerido em grandes quantidades, pode causar danos à saúde humana. Assim, há uma grande preocupação por parte de pesquisadores e produtores quanto à utilização de substâncias adsorventes na remoção de seu excesso. Conduziu-se este trabalho, com os objetivos de estudar a cinética e a isoterma de adsorção de cobre em caulinitas e avaliar a qualidade físico-química da cachaça antes e após a adsorção. As caulinitas K01, K03 e K04 apresentaram capacidade máxima de adsorção do metal, 97, 95 e 90%, respectivamente. Observou-se que a cinética de adsorção segue o modelo de pseudoprimeira ordem e que os dados de isotermas se ajustaram ao modelo de Freundlich. Nos resultados das análises físico-químicas, todos os parâmetros da amostra controle estavam dentro dos limites exigidos pela legislação, exceto para os aldeídos e cobre. Após a adsorção com as argilas estudadas, a cachaça apresentou uma redução dos mesmos e para alguns parâmetros não houveram diferenças significativas. Pelos resultados da análise multivariada, com a primeira e a segunda componente principal, foi possível descrever 87% dos dados e pode-se constatar que todas as amostras diferiram-se do controle quanto aos parâmetros analisados. Assim, as argilas analisadas podem futuramente, após mais estudos, serem utilizadas na remoção do cobre da cachaça.Editora UFLA2019-10-09T14:12:21Z2019-10-09T14:12:21Z2014-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDUARTE, F. C. et al. Removal of copper in cachaças using clays. Ciência e Agrotecnologia, Lavras, v. 38, n. 4, p. 382-389, jul./ago. 2014. DOI: 10.1590/S1413-70542014000400009.http://repositorio.ufla.br/jspui/handle/1/37145Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessDuarte, Felipe CiminoCardoso, Maria das GraçasMagriotis, Zuy MariaSantiago, Wilder DouglasMendonça, João Guilherme PereiraRodrigues, Leonardo Milani Avelareng2023-05-02T18:51:46Zoai:localhost:1/37145Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-02T18:51:46Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Removal of copper in cachaças using clays
Remoção de cobre em cachaça usando argilas
title Removal of copper in cachaças using clays
spellingShingle Removal of copper in cachaças using clays
Duarte, Felipe Cimino
Beverage
Kinetic parameters
Isotherms
Adsorption
Bebida
Cinética
Isotermas
Adsorção
title_short Removal of copper in cachaças using clays
title_full Removal of copper in cachaças using clays
title_fullStr Removal of copper in cachaças using clays
title_full_unstemmed Removal of copper in cachaças using clays
title_sort Removal of copper in cachaças using clays
author Duarte, Felipe Cimino
author_facet Duarte, Felipe Cimino
Cardoso, Maria das Graças
Magriotis, Zuy Maria
Santiago, Wilder Douglas
Mendonça, João Guilherme Pereira
Rodrigues, Leonardo Milani Avelar
author_role author
author2 Cardoso, Maria das Graças
Magriotis, Zuy Maria
Santiago, Wilder Douglas
Mendonça, João Guilherme Pereira
Rodrigues, Leonardo Milani Avelar
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Duarte, Felipe Cimino
Cardoso, Maria das Graças
Magriotis, Zuy Maria
Santiago, Wilder Douglas
Mendonça, João Guilherme Pereira
Rodrigues, Leonardo Milani Avelar
dc.subject.por.fl_str_mv Beverage
Kinetic parameters
Isotherms
Adsorption
Bebida
Cinética
Isotermas
Adsorção
topic Beverage
Kinetic parameters
Isotherms
Adsorption
Bebida
Cinética
Isotermas
Adsorção
description Increased production and cachaça consumption has stimulated research regarding its quality. It is known that copper can be harmful to human health when it is in concentrated form in the beverage and is ingested in large amounts. Thus, there is a great concern among researchers and producers about the use of adsorbent substances for the removal of excess copper. The kinetic parameters and the adsorption isotherms for copper on kaolinite were studied to evaluate the physical-chemical quality of the cachaça before and after adsorption. K01, K03 and K04 kaolinites presented a maximum adsorption capacity of 97, 95 and 90%, respectively. The kinetic rates followed the pseudo-first-order model, and the adsorption isotherm was best adjusted to the Freundlich model. All the parameters of the control samples were within the limits required by law, except for the aldehydes and copper. After adsorption with clay, the values for some of the parameters were lower and those of others were not significantly different. It was possible to describe 87% of the data with the first and second principal components of the multivariate analysis, and all the samples were different from the control for the parameters analyzed. Thus, these clays can be used for the removal of copper from cachaça, but further studies are necessary.
publishDate 2014
dc.date.none.fl_str_mv 2014-08
2019-10-09T14:12:21Z
2019-10-09T14:12:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv DUARTE, F. C. et al. Removal of copper in cachaças using clays. Ciência e Agrotecnologia, Lavras, v. 38, n. 4, p. 382-389, jul./ago. 2014. DOI: 10.1590/S1413-70542014000400009.
http://repositorio.ufla.br/jspui/handle/1/37145
identifier_str_mv DUARTE, F. C. et al. Removal of copper in cachaças using clays. Ciência e Agrotecnologia, Lavras, v. 38, n. 4, p. 382-389, jul./ago. 2014. DOI: 10.1590/S1413-70542014000400009.
url http://repositorio.ufla.br/jspui/handle/1/37145
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editora UFLA
publisher.none.fl_str_mv Editora UFLA
dc.source.none.fl_str_mv Ciência e Agrotecnologia
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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