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

dc.creatorMelo, Ricardo Paulo Fonseca
dc.creatorBarros Neto, Eduardo Lins de
dc.creatorDantas, Tereza Neuma de Castro
dc.creatorDantas Neto, Afonso Avelino
dc.creatorMoura, M. C. P. A.
dc.creatorOliveira, Humberto Neves Maia de
dc.date.accessioned2021-12-06T14:32:31Z
dc.date.accessioned2022-10-05T23:05:35Z
dc.date.available2021-12-06T14:32:31Z
dc.date.available2022-10-05T23:05:35Z
dc.date.created2021-12-06T14:32:31Z
dc.date.issued2014-12-10
dc.identifierMELO, 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.identifier1383-5866
dc.identifierhttps://repositorio.ufrn.br/handle/123456789/45175
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3946588
dc.description.abstractTextile 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
dc.publisherELSEVIER
dc.rightshttp://creativecommons.org/licenses/by/3.0/br/
dc.rightsAttribution 3.0 Brazil
dc.subjectReactive Blue 19
dc.subjectNonionic surfactant
dc.subjectCloud point extraction
dc.subjectCoacervate phase
dc.subjectLangmuir isotherm
dc.titleRemoval of Reactive Blue 19 using nonionic surfactant in cloud point extraction
dc.typearticle


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