Use of aqueous two-phase PEG-salt systems for the removal of anionic surfactant from effluents.
dc.contributor.author | Murari, Gabriella Frade | |
dc.contributor.author | Penido, Jussara Alves | |
dc.contributor.author | Silva, Heriveltom Morais da | |
dc.contributor.author | Baeta, Bruno Eduardo Lobo | |
dc.contributor.author | Aquino, Sergio Francisco de | |
dc.contributor.author | Lemos, Leandro Rodrigues de | |
dc.contributor.author | Rodrigues, Guilherme Dias | |
dc.contributor.author | Mageste, Aparecida Barbosa | |
dc.date.accessioned | 2018-03-13T13:59:22Z | |
dc.date.available | 2018-03-13T13:59:22Z | |
dc.date.issued | 2017 | |
dc.description.abstract | Linear 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. | pt_BR |
dc.identifier.citation | MURARI, G. F. et al. Use of aqueous two-phase PEG-salt systems for the removal of anionic surfactant from effluents. Journal of Environmental Management, v. 198, p. 43-49, ago. 2017. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0301479717303948?via%3Dihub>. Acesso em: 15 set. 2017. | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.jenvman.2017.04.046 | |
dc.identifier.issn | 0301-4797 | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/9599 | |
dc.language.iso | en_US | pt_BR |
dc.rights | aberto | pt_BR |
dc.rights.license | O periódico Journal of Environmental Management concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4210801465054. | pt_BR |
dc.subject | Linear alkylbenzene sulfonate | pt_BR |
dc.subject | Green chemistry | pt_BR |
dc.subject | Partition | pt_BR |
dc.subject | Polymer-surfactant interaction | pt_BR |
dc.title | Use of aqueous two-phase PEG-salt systems for the removal of anionic surfactant from effluents. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
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