Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21.
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/5453 https://doi.org/10.1016/j.jhazmat.2014.07.071 |
Resumo: | This paper investigated sulphate removal from aqueous solutions by Amberlyst A21, a polystyrene weakbase ion exchange resin. Both the pH and initial sulphate concentration were observed to stronglyaffect sorption yields, which were largest in acidic environments. Working under optimum opera-tional conditions, sulphate sorption by Amberlyst A21 was relatively fast and reached equilibrium after45 min of contact between the solid and liquid phases. Sorption kinetics could be described by eitherthe pseudo-first order (k1= 3.05 × 10−5s−1) or pseudo-second order model (k2= 1.67 × 10−4s−1), andboth the Freundlich and Langmuir models successfully fitted the equilibrium data. Sulphate uptake byAmberlyst A21 was a physisorption process ( H = −25.06 kJ mol−1) that occurred with entropy reduction(deltaS = −0.042 kJ mol−1K−1). Elution experiments showed that sulphate is easily desorbed (∼100%) fromthe resin by sodium hydroxide solutions at pH 10 or pH 12. Fixed-bed experiments assessed the effects ofthe initial sulphate concentration, bed height and flow rate on the breakthrough curves and the efficiencyof the Amberlyst A21 in the treatment of a real effluent. In all studied conditions, the maximum sulphateloading resin varied between 8 and 40 mg (SO42−) mL (resin)−1. |
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Guimarães, DamarisLeão, Versiane Albis2015-05-22T14:47:15Z2015-05-22T14:47:15Z2014GUIMARÃES, D.; LEÃO, V. A. Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. Journal of Hazardous Materials, v. 280, p. 209-215, 2014. Disponível em:<http://www.sciencedirect.com/science/article/pii/S0304389414006487>. Acesso em: 09 abr. 2015.0304-3894http://www.repositorio.ufop.br/handle/123456789/5453https://doi.org/10.1016/j.jhazmat.2014.07.071This paper investigated sulphate removal from aqueous solutions by Amberlyst A21, a polystyrene weakbase ion exchange resin. Both the pH and initial sulphate concentration were observed to stronglyaffect sorption yields, which were largest in acidic environments. Working under optimum opera-tional conditions, sulphate sorption by Amberlyst A21 was relatively fast and reached equilibrium after45 min of contact between the solid and liquid phases. Sorption kinetics could be described by eitherthe pseudo-first order (k1= 3.05 × 10−5s−1) or pseudo-second order model (k2= 1.67 × 10−4s−1), andboth the Freundlich and Langmuir models successfully fitted the equilibrium data. Sulphate uptake byAmberlyst A21 was a physisorption process ( H = −25.06 kJ mol−1) that occurred with entropy reduction(deltaS = −0.042 kJ mol−1K−1). Elution experiments showed that sulphate is easily desorbed (∼100%) fromthe resin by sodium hydroxide solutions at pH 10 or pH 12. Fixed-bed experiments assessed the effects ofthe initial sulphate concentration, bed height and flow rate on the breakthrough curves and the efficiencyof the Amberlyst A21 in the treatment of a real effluent. In all studied conditions, the maximum sulphateloading resin varied between 8 and 40 mg (SO42−) mL (resin)−1.Sulphate removalSorptionIon exchangeAmberlyst A21Weak base resinsaBatch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico Journal of Hazardous Materials concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3614241376937.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-82636http://www.repositorio.ufop.br/bitstream/123456789/5453/2/license.txtc2ffdd99e58acf69202dff00d361f23aMD52ORIGINALARTIGO_BatchFixedBed.pdfARTIGO_BatchFixedBed.pdfapplication/pdf460840http://www.repositorio.ufop.br/bitstream/123456789/5453/1/ARTIGO_BatchFixedBed.pdfde2f6a00e78903c2aa69ee371f27e76dMD51123456789/54532019-07-25 10:26:55.789oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-07-25T14:26:55Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
title |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
spellingShingle |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. Guimarães, Damaris Sulphate removal Sorption Ion exchange Amberlyst A21 Weak base resinsa |
title_short |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
title_full |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
title_fullStr |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
title_full_unstemmed |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
title_sort |
Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. |
author |
Guimarães, Damaris |
author_facet |
Guimarães, Damaris Leão, Versiane Albis |
author_role |
author |
author2 |
Leão, Versiane Albis |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Guimarães, Damaris Leão, Versiane Albis |
dc.subject.por.fl_str_mv |
Sulphate removal Sorption Ion exchange Amberlyst A21 Weak base resinsa |
topic |
Sulphate removal Sorption Ion exchange Amberlyst A21 Weak base resinsa |
description |
This paper investigated sulphate removal from aqueous solutions by Amberlyst A21, a polystyrene weakbase ion exchange resin. Both the pH and initial sulphate concentration were observed to stronglyaffect sorption yields, which were largest in acidic environments. Working under optimum opera-tional conditions, sulphate sorption by Amberlyst A21 was relatively fast and reached equilibrium after45 min of contact between the solid and liquid phases. Sorption kinetics could be described by eitherthe pseudo-first order (k1= 3.05 × 10−5s−1) or pseudo-second order model (k2= 1.67 × 10−4s−1), andboth the Freundlich and Langmuir models successfully fitted the equilibrium data. Sulphate uptake byAmberlyst A21 was a physisorption process ( H = −25.06 kJ mol−1) that occurred with entropy reduction(deltaS = −0.042 kJ mol−1K−1). Elution experiments showed that sulphate is easily desorbed (∼100%) fromthe resin by sodium hydroxide solutions at pH 10 or pH 12. Fixed-bed experiments assessed the effects ofthe initial sulphate concentration, bed height and flow rate on the breakthrough curves and the efficiencyof the Amberlyst A21 in the treatment of a real effluent. In all studied conditions, the maximum sulphateloading resin varied between 8 and 40 mg (SO42−) mL (resin)−1. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2015-05-22T14:47:15Z |
dc.date.available.fl_str_mv |
2015-05-22T14:47:15Z |
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 |
GUIMARÃES, D.; LEÃO, V. A. Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. Journal of Hazardous Materials, v. 280, p. 209-215, 2014. Disponível em:<http://www.sciencedirect.com/science/article/pii/S0304389414006487>. Acesso em: 09 abr. 2015. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/5453 |
dc.identifier.issn.none.fl_str_mv |
0304-3894 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/j.jhazmat.2014.07.071 |
identifier_str_mv |
GUIMARÃES, D.; LEÃO, V. A. Batch and fixed-bed assessment of sulphate removal by the weak base ion exchange resin Amberlyst A21. Journal of Hazardous Materials, v. 280, p. 209-215, 2014. Disponível em:<http://www.sciencedirect.com/science/article/pii/S0304389414006487>. Acesso em: 09 abr. 2015. 0304-3894 |
url |
http://www.repositorio.ufop.br/handle/123456789/5453 https://doi.org/10.1016/j.jhazmat.2014.07.071 |
dc.language.iso.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
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