Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1016/j.seppur.2012.06.012 http://www.locus.ufv.br/handle/123456789/21494 |
Resumo: | Partitioning of the natural dye norbixin has been studied in aqueous two-phase system (ATPS) that are formed by mixing aqueous solutions of a polymer (or copolymer) and an organic salt (sodium tartrate or succinate). In this work, the norbixin partition coefficient (KN) was optimized, taking into account the variables of polymer concentration, salt concentration and pH. It was found that KN is highly dependent on the electrolyte nature, system hydrophobicity and TLL values. Testing produced KN values between 8 and 130, indicating the great potential of ATPS as a method for norbixin pre-concentration/purification. Thermodynamic transfer parameters (ΔtrG, ΔtrH, ΔtrS) indicate that the preferential concentration of norbixin in the top phase is favored by enthalpic and entropic contributions. |
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Mageste, Aparecida BarbosaSenra, Tonimar Domiciano ArrighiSilva, M. Carmo Hespanhol daBonomo, Renata Cristina FerreiraSilva, Luis Henrique Mendes da2018-08-29T11:03:49Z2018-08-29T11:03:49Z2012-09-1913835866https://doi.org/10.1016/j.seppur.2012.06.012http://www.locus.ufv.br/handle/123456789/21494Partitioning of the natural dye norbixin has been studied in aqueous two-phase system (ATPS) that are formed by mixing aqueous solutions of a polymer (or copolymer) and an organic salt (sodium tartrate or succinate). In this work, the norbixin partition coefficient (KN) was optimized, taking into account the variables of polymer concentration, salt concentration and pH. It was found that KN is highly dependent on the electrolyte nature, system hydrophobicity and TLL values. Testing produced KN values between 8 and 130, indicating the great potential of ATPS as a method for norbixin pre-concentration/purification. Thermodynamic transfer parameters (ΔtrG, ΔtrH, ΔtrS) indicate that the preferential concentration of norbixin in the top phase is favored by enthalpic and entropic contributions.engSeparation and Purification Technologyv. 98, p. 69- 77, set. 2012Elsevier B.V.info:eu-repo/semantics/openAccessAqueous two-phase systemsNorbixinPurificationPartitionGreen chemistryThermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic saltsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdftexto completoapplication/pdf868095https://locus.ufv.br//bitstream/123456789/21494/1/artigo.pdffd51672489cca562184e3ebfbbd7b509MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/21494/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILartigo.pdf.jpgartigo.pdf.jpgIM Thumbnailimage/jpeg5472https://locus.ufv.br//bitstream/123456789/21494/3/artigo.pdf.jpgb5ac48c56c0b67ebd87361a8bb5e7be0MD53123456789/214942018-08-29 23:00:46.589oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-08-30T02:00:46LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
title |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
spellingShingle |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts Mageste, Aparecida Barbosa Aqueous two-phase systems Norbixin Purification Partition Green chemistry |
title_short |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
title_full |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
title_fullStr |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
title_full_unstemmed |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
title_sort |
Thermodynamics and optimization of norbixin transfer processes in aqueous biphasic systems formed by polymers and organic salts |
author |
Mageste, Aparecida Barbosa |
author_facet |
Mageste, Aparecida Barbosa Senra, Tonimar Domiciano Arrighi Silva, M. Carmo Hespanhol da Bonomo, Renata Cristina Ferreira Silva, Luis Henrique Mendes da |
author_role |
author |
author2 |
Senra, Tonimar Domiciano Arrighi Silva, M. Carmo Hespanhol da Bonomo, Renata Cristina Ferreira Silva, Luis Henrique Mendes da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Mageste, Aparecida Barbosa Senra, Tonimar Domiciano Arrighi Silva, M. Carmo Hespanhol da Bonomo, Renata Cristina Ferreira Silva, Luis Henrique Mendes da |
dc.subject.pt-BR.fl_str_mv |
Aqueous two-phase systems Norbixin Purification Partition Green chemistry |
topic |
Aqueous two-phase systems Norbixin Purification Partition Green chemistry |
description |
Partitioning of the natural dye norbixin has been studied in aqueous two-phase system (ATPS) that are formed by mixing aqueous solutions of a polymer (or copolymer) and an organic salt (sodium tartrate or succinate). In this work, the norbixin partition coefficient (KN) was optimized, taking into account the variables of polymer concentration, salt concentration and pH. It was found that KN is highly dependent on the electrolyte nature, system hydrophobicity and TLL values. Testing produced KN values between 8 and 130, indicating the great potential of ATPS as a method for norbixin pre-concentration/purification. Thermodynamic transfer parameters (ΔtrG, ΔtrH, ΔtrS) indicate that the preferential concentration of norbixin in the top phase is favored by enthalpic and entropic contributions. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-09-19 |
dc.date.accessioned.fl_str_mv |
2018-08-29T11:03:49Z |
dc.date.available.fl_str_mv |
2018-08-29T11:03:49Z |
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 |
https://doi.org/10.1016/j.seppur.2012.06.012 http://www.locus.ufv.br/handle/123456789/21494 |
dc.identifier.issn.none.fl_str_mv |
13835866 |
identifier_str_mv |
13835866 |
url |
https://doi.org/10.1016/j.seppur.2012.06.012 http://www.locus.ufv.br/handle/123456789/21494 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 98, p. 69- 77, set. 2012 |
dc.rights.driver.fl_str_mv |
Elsevier B.V. info:eu-repo/semantics/openAccess |
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Elsevier B.V. |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Separation and Purification Technology |
publisher.none.fl_str_mv |
Separation and Purification Technology |
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LOCUS Repositório Institucional da UFV |
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