Use of aqueous two-phase PEG-salt systems for the removal of anionic surfactant from effluents.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorMurari, Gabriella Frade-
Autor(es): dc.creatorPenido, Jussara Alves-
Autor(es): dc.creatorSilva, Heriveltom Morais da-
Autor(es): dc.creatorBaeta, Bruno Eduardo Lobo-
Autor(es): dc.creatorAquino, Sergio Francisco de-
Autor(es): dc.creatorLemos, Leandro Rodrigues de-
Autor(es): dc.creatorRodrigues, Guilherme Dias-
Autor(es): dc.creatorMageste, Aparecida Barbosa-
Data de aceite: dc.date.accessioned2025-08-21T15:15:03Z-
Data de disponibilização: dc.date.available2025-08-21T15:15:03Z-
Data de envio: dc.date.issued2018-03-13-
Data de envio: dc.date.issued2018-03-13-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/9599-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.jenvman.2017.04.046-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1007917-
Descrição: dc.descriptionLinear alkylbenzene sulfonates (LAS) are synthetic anionic surfactants that are extensively used in many industries. As a result, large volumes of effluents containing high levels of these compounds are discharged into water bodies, causing risks to aquatic flora and fauna. Then, there is a need for environmentally safe and economically viable technologies for the removal of LAS from aqueous matrices. The present work evaluates the use of aqueous two-phase systems (ATPS) composed of PEG and sulfate salts for this purpose, considering the effects of tie line length (TLL), molar mass of polymer, and type of cation-forming salt on the partitioning behavior of LAS. All the LAS partition coefficient (KLAS) values were greater than unity, and the LAS extraction efficiencies (%ELAS) were higher than 97%. The system consisting of PEG 1500 þ (NH4)2SO4 þ H2O provided the highest KLAS (1083.34) and %ELAS (99.9%), indicating that the method provided good extraction of LAS to the top phase. This system was applied using a real effluent sample in laboratory-scale experiments as well as in bench-scale batch trials. The results obtained at the laboratory scale showed %ELAS values greater than 98%, while the best KLAS value obtained in the batch experiments was 8.50 (±1.75) (%ELAS ¼ 78.17%). These values demonstrated the potential of ATPS for the removal of LAS from industrial effluents.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsO periódico Journal of Environmental Management concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4210801465054.-
Palavras-chave: dc.subjectLinear alkylbenzene sulfonate-
Palavras-chave: dc.subjectGreen chemistry-
Palavras-chave: dc.subjectPartition-
Palavras-chave: dc.subjectPolymer-surfactant interaction-
Título: dc.titleUse of aqueous two-phase PEG-salt systems for the removal of anionic surfactant from effluents.-
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