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Polyurethane foam loaded with sodium dodecylsulfate for the extraction of 'quat' pesticides from aqueous medium: optimization of loading conditions

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dc.contributor.author Vinhal, Jonas O.
dc.contributor.author Lima, Claudio F.
dc.contributor.author Cassella, Ricardo J.
dc.date.accessioned 2018-06-04T11:54:46Z
dc.date.available 2018-06-04T11:54:46Z
dc.date.issued 2016-05-20
dc.identifier.issn 01476513
dc.identifier.uri https://doi.org/10.1016/j.ecoenv.2016.05.012
dc.identifier.uri http://www.locus.ufv.br/handle/123456789/19897
dc.description.abstract The cationic herbicides paraquat, diquat and difenzoquat are largely used in different cultures worldwide. With this, there is an intrinsic risk of environmental contamination when these herbicides achieve natural waters. The goal of this work was to propose a novel and low-cost sorbent for the removal of the cited herbicides from aqueous medium. The proposed sorbent was prepared by loading polyurethane foam with sodium dodecylsulfate. The influence of several parameters (SDS concentration, HCl concentration and shaking time) on the loading process was investigated. The results obtained in this work demonstrated that all studied variables influenced the loading process, having significant effect on the extraction efficiency of the resulted PUF-SDS. At optimized conditions, the PUF was loaded by shaking 200 mg of crushed foam with 200 mL of a solution containing 5.0×10^−3 mol L^−1 SDS and 0.25 mol L^−1 HCl, for 30 min. The obtained PUF-SDS was efficient for removing the three herbicides from aqueous medium, achieving extraction percentages higher than 90%. The sorption process followed a pseudo second-order kinetics, which presented excellent predictive capacity of the amount of herbicide retained with time. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Ecotoxicology and Environmental Safety pt-BR
dc.relation.ispartofseries v. 131, p. 72-78, Setembro 2016 pt-BR
dc.rights Elsevier Inc. pt-BR
dc.subject Cationic herbicides pt-BR
dc.subject Polyurethane foam pt-BR
dc.subject Sodium dodecylsulfate pt-BR
dc.subject Sorption pt-BR
dc.title Polyurethane foam loaded with sodium dodecylsulfate for the extraction of 'quat' pesticides from aqueous medium: optimization of loading conditions en
dc.type Artigo pt-BR


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  • Artigos [378]
    Artigos Técnico-científicos na área de Química

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