Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction

Detalhes bibliográficos
Autor(a) principal: Melo, Ricardo Paulo Fonseca
Data de Publicação: 2014
Outros Autores: Barros Neto, Eduardo Lins de, Dantas, Tereza Neuma de Castro, Dantas Neto, Afonso Avelino, Moura, M. C. P. A., Oliveira, Humberto Neves Maia de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45175
Resumo: Textile wastewater represents a serious environmental issue due to the presence of toxic dyes. The cloudpoint extraction, which involves the application of nonionic surfactants at temperatures above the cloudpoint, was applied in this research to remove Reactive Blue 19 dye from a synthetic wastewater. Nonyl-phenol with 9.5 ethoxylation degree was used as nonionic surfactant. Dye removal was evaluated consid-ering the influence of surfactant concentration, temperature, and initial dye concentration. Equilibriumdata followed the Langmuir isotherm model. Negative Gibbs energy, enthalpy, and entropy showed thatthe process was spontaneous and exothermal. Dye removal reached 91% when using 7.5 wt% surfactant,at 65.0°C. Cloud point extraction can be used as an efficient alternative for treating textile wastewatercontaining Reactive Blue 19
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spelling Melo, Ricardo Paulo FonsecaBarros Neto, Eduardo Lins deDantas, Tereza Neuma de CastroDantas Neto, Afonso AvelinoMoura, M. C. P. A.Oliveira, Humberto Neves Maia de2021-12-06T14:32:31Z2021-12-06T14:32:31Z2014-12-10MELO, Ricardo Paulo Fonseca; BARROS NETO, Eduardo Lins de; MOURA, M.C.P.A.; DANTAS, Tereza Neuma de Castro; DANTAS NETO, Afonso Avelino; Oliveira, Humberto Neves Maia de. Removal of reactive blue 19 using nonionic surfactant in cloud point extraction. Separation and Purification Technology (Print), v. 138, p. 71-76, 2014. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1383586614006121?via%3Dihub#!. Acesso em: 04 dez. 2021. DOI: https://doi.org/10.1016/j.seppur.2014.10.0091383-5866https://repositorio.ufrn.br/handle/123456789/45175Textile wastewater represents a serious environmental issue due to the presence of toxic dyes. The cloudpoint extraction, which involves the application of nonionic surfactants at temperatures above the cloudpoint, was applied in this research to remove Reactive Blue 19 dye from a synthetic wastewater. Nonyl-phenol with 9.5 ethoxylation degree was used as nonionic surfactant. Dye removal was evaluated consid-ering the influence of surfactant concentration, temperature, and initial dye concentration. Equilibriumdata followed the Langmuir isotherm model. Negative Gibbs energy, enthalpy, and entropy showed thatthe process was spontaneous and exothermal. Dye removal reached 91% when using 7.5 wt% surfactant,at 65.0°C. Cloud point extraction can be used as an efficient alternative for treating textile wastewatercontaining Reactive Blue 19Textile wastewater represents a serious environmental issue due to the presence of toxic dyes. The cloudpoint extraction, which involves the application of nonionic surfactants at temperatures above the cloudpoint, was applied in this research to remove Reactive Blue 19 dye from a synthetic wastewater. Nonyl-phenol with 9.5 ethoxylation degree was used as nonionic surfactant. Dye removal was evaluated consid-ering the influence of surfactant concentration, temperature, and initial dye concentration. Equilibriumdata followed the Langmuir isotherm model. Negative Gibbs energy, enthalpy, and entropy showed thatthe process was spontaneous and exothermal. Dye removal reached 91% when using 7.5 wt% surfactant,at 65.0°C. Cloud point extraction can be used as an efficient alternative for treating textile wastewatercontaining Reactive Blue 19ELSEVIERAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessReactive Blue 19Nonionic surfactantCloud point extractionCoacervate phaseLangmuir isothermRemoval of Reactive Blue 19 using nonionic surfactant in cloud point extractioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALRemovalReactiveBlue_BARROSNETO_2014.pdfRemovalReactiveBlue_BARROSNETO_2014.pdfArtigoapplication/pdf892769https://repositorio.ufrn.br/bitstream/123456789/45175/4/RemovalReactiveBlue_BARROSNETO_2014.pdf5926914ec912026db6214e1a8bf71c63MD54LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45175/5/license.txte9597aa2854d128fd968be5edc8a28d9MD55CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/45175/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52123456789/451752021-12-06 11:34:24.708oai:https://repositorio.ufrn.br:123456789/45175Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKCkJ5IHNpZ25pbmcgYW5kIGRlbGl2ZXJpbmcgdGhpcyBsaWNlbnNlLCBNci4gKGF1dGhvciBvciBjb3B5cmlnaHQgaG9sZGVyKToKCgphKSBHcmFudHMgdGhlIFVuaXZlcnNpZGFkZSBGZWRlcmFsIFJpbyBHcmFuZGUgZG8gTm9ydGUgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgb2YKcmVwcm9kdWNlLCBjb252ZXJ0IChhcyBkZWZpbmVkIGJlbG93KSwgY29tbXVuaWNhdGUgYW5kIC8gb3IKZGlzdHJpYnV0ZSB0aGUgZGVsaXZlcmVkIGRvY3VtZW50IChpbmNsdWRpbmcgYWJzdHJhY3QgLyBhYnN0cmFjdCkgaW4KZGlnaXRhbCBvciBwcmludGVkIGZvcm1hdCBhbmQgaW4gYW55IG1lZGl1bS4KCmIpIERlY2xhcmVzIHRoYXQgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBpdHMgb3JpZ2luYWwgd29yaywgYW5kIHRoYXQKeW91IGhhdmUgdGhlIHJpZ2h0IHRvIGdyYW50IHRoZSByaWdodHMgY29udGFpbmVkIGluIHRoaXMgbGljZW5zZS4gRGVjbGFyZXMKdGhhdCB0aGUgZGVsaXZlcnkgb2YgdGhlIGRvY3VtZW50IGRvZXMgbm90IGluZnJpbmdlLCBhcyBmYXIgYXMgaXQgaXMKdGhlIHJpZ2h0cyBvZiBhbnkgb3RoZXIgcGVyc29uIG9yIGVudGl0eS4KCmMpIElmIHRoZSBkb2N1bWVudCBkZWxpdmVyZWQgY29udGFpbnMgbWF0ZXJpYWwgd2hpY2ggZG9lcyBub3QKcmlnaHRzLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBvYnRhaW5lZCBhdXRob3JpemF0aW9uIGZyb20gdGhlIGhvbGRlciBvZiB0aGUKY29weXJpZ2h0IHRvIGdyYW50IHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdCB0aGlzIG1hdGVyaWFsIHdob3NlIHJpZ2h0cyBhcmUgb2YKdGhpcmQgcGFydGllcyBpcyBjbGVhcmx5IGlkZW50aWZpZWQgYW5kIHJlY29nbml6ZWQgaW4gdGhlIHRleHQgb3IKY29udGVudCBvZiB0aGUgZG9jdW1lbnQgZGVsaXZlcmVkLgoKSWYgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBiYXNlZCBvbiBmdW5kZWQgb3Igc3VwcG9ydGVkIHdvcmsKYnkgYW5vdGhlciBpbnN0aXR1dGlvbiBvdGhlciB0aGFuIHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBmdWxmaWxsZWQgYW55IG9ibGlnYXRpb25zIHJlcXVpcmVkIGJ5IHRoZSByZXNwZWN0aXZlIGFncmVlbWVudCBvciBhZ3JlZW1lbnQuCgpUaGUgVW5pdmVyc2lkYWRlIEZlZGVyYWwgZG8gUmlvIEdyYW5kZSBkbyBOb3J0ZSB3aWxsIGNsZWFybHkgaWRlbnRpZnkgaXRzIG5hbWUgKHMpIGFzIHRoZSBhdXRob3IgKHMpIG9yIGhvbGRlciAocykgb2YgdGhlIGRvY3VtZW50J3MgcmlnaHRzCmRlbGl2ZXJlZCwgYW5kIHdpbGwgbm90IG1ha2UgYW55IGNoYW5nZXMsIG90aGVyIHRoYW4gdGhvc2UgcGVybWl0dGVkIGJ5CnRoaXMgbGljZW5zZQo=Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-12-06T14:34:24Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
title Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
spellingShingle Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
Melo, Ricardo Paulo Fonseca
Reactive Blue 19
Nonionic surfactant
Cloud point extraction
Coacervate phase
Langmuir isotherm
title_short Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
title_full Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
title_fullStr Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
title_full_unstemmed Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
title_sort Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction
author Melo, Ricardo Paulo Fonseca
author_facet Melo, Ricardo Paulo Fonseca
Barros Neto, Eduardo Lins de
Dantas, Tereza Neuma de Castro
Dantas Neto, Afonso Avelino
Moura, M. C. P. A.
Oliveira, Humberto Neves Maia de
author_role author
author2 Barros Neto, Eduardo Lins de
Dantas, Tereza Neuma de Castro
Dantas Neto, Afonso Avelino
Moura, M. C. P. A.
Oliveira, Humberto Neves Maia de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Melo, Ricardo Paulo Fonseca
Barros Neto, Eduardo Lins de
Dantas, Tereza Neuma de Castro
Dantas Neto, Afonso Avelino
Moura, M. C. P. A.
Oliveira, Humberto Neves Maia de
dc.subject.por.fl_str_mv Reactive Blue 19
Nonionic surfactant
Cloud point extraction
Coacervate phase
Langmuir isotherm
topic Reactive Blue 19
Nonionic surfactant
Cloud point extraction
Coacervate phase
Langmuir isotherm
description Textile wastewater represents a serious environmental issue due to the presence of toxic dyes. The cloudpoint extraction, which involves the application of nonionic surfactants at temperatures above the cloudpoint, was applied in this research to remove Reactive Blue 19 dye from a synthetic wastewater. Nonyl-phenol with 9.5 ethoxylation degree was used as nonionic surfactant. Dye removal was evaluated consid-ering the influence of surfactant concentration, temperature, and initial dye concentration. Equilibriumdata followed the Langmuir isotherm model. Negative Gibbs energy, enthalpy, and entropy showed thatthe process was spontaneous and exothermal. Dye removal reached 91% when using 7.5 wt% surfactant,at 65.0°C. Cloud point extraction can be used as an efficient alternative for treating textile wastewatercontaining Reactive Blue 19
publishDate 2014
dc.date.issued.fl_str_mv 2014-12-10
dc.date.accessioned.fl_str_mv 2021-12-06T14:32:31Z
dc.date.available.fl_str_mv 2021-12-06T14:32:31Z
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.citation.fl_str_mv MELO, Ricardo Paulo Fonseca; BARROS NETO, Eduardo Lins de; MOURA, M.C.P.A.; DANTAS, Tereza Neuma de Castro; DANTAS NETO, Afonso Avelino; Oliveira, Humberto Neves Maia de. Removal of reactive blue 19 using nonionic surfactant in cloud point extraction. Separation and Purification Technology (Print), v. 138, p. 71-76, 2014. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1383586614006121?via%3Dihub#!. Acesso em: 04 dez. 2021. DOI: https://doi.org/10.1016/j.seppur.2014.10.009
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45175
dc.identifier.issn.none.fl_str_mv 1383-5866
identifier_str_mv MELO, Ricardo Paulo Fonseca; BARROS NETO, Eduardo Lins de; MOURA, M.C.P.A.; DANTAS, Tereza Neuma de Castro; DANTAS NETO, Afonso Avelino; Oliveira, Humberto Neves Maia de. Removal of reactive blue 19 using nonionic surfactant in cloud point extraction. Separation and Purification Technology (Print), v. 138, p. 71-76, 2014. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1383586614006121?via%3Dihub#!. Acesso em: 04 dez. 2021. DOI: https://doi.org/10.1016/j.seppur.2014.10.009
1383-5866
url https://repositorio.ufrn.br/handle/123456789/45175
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
eu_rights_str_mv openAccess
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