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https://hdl.handle.net/1822/81870
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Campo DC | Valor | Idioma |
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dc.contributor.author | Queirós, Joana M. | por |
dc.contributor.author | Salazar, H. | por |
dc.contributor.author | Valverde, A. | por |
dc.contributor.author | Botelho, Gabriela | por |
dc.contributor.author | Fernández de Luis, R. | por |
dc.contributor.author | Teixeira, J. | por |
dc.contributor.author | Martins, P. M. | por |
dc.contributor.author | Lanceros-Méndez, S. | por |
dc.date.accessioned | 2023-01-16T14:29:54Z | - |
dc.date.issued | 2022-11 | - |
dc.identifier.issn | 0045-6535 | por |
dc.identifier.uri | https://hdl.handle.net/1822/81870 | - |
dc.description.abstract | Hexavalent chromium water contamination is still a worldwide concern because this highly mobile ion can cause carcinogenic effects on animals and humans. Therefore, there is an intense research on new active and cost-effective sorbents for Cr(VI), but most of them still exhibit a critical limitation: their powdered nature makes their recovery from water cost and energyconsuming. In this work, Cr(VI) nano-sorbents (i.e., Al(OH)3, MIL-88-B(Fe), and UiO-66- NH2) have been immobilized into a poly (vinylidene fluoride-co-hexafluoropropylene) (PVDFHFP) polymeric substrate to develop an easily reactivable and reusable Cr(VI) filtering technology. The microstructure, morphology, and surface properties of the active nanoparticulated sorbents and the corresponding nanocomposite membranes (NCM) have been characterized from the macrometric to the nanometric scale. The immobilization of the nano sorbent into the PVDF-HFP porous matrix induces a templating effect of the porous structure and allows to tune the hydrophobic/hydrophilic nature of the NCMs. Although a partial blocking of the Cr(VI) adsorptive capacity for Al(OH)3 and MIL-88-B(Fe) based membranes with respect to the pristine nanosorbents was observed, UiO-66-NH2 composite filters maintain the full capacity of the active material to trap Cr(VI), achieving a maximum adsorption capacity of 59.9 mg/g. Despite the slow-down of the Cr(VI) adsorption kinetics of the UiO-66- NH2/PVDF-HFP NCM compared to the active material in suspension, the hybrid system allows easy recovery and activatation, is functionally stable over adsorption-desorption cycling, and is highly robust in terms of efficiency when applied in real effluent water samples. | por |
dc.description.sponsorship | This work was supported by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Projects UIDB/04650/2020 and UID/QUI/50006/2019 and project PTDC/FIS-MAC/28157/2017. H. Salazar and P.M. Martins thanks the FCT for grants SFRH/BD/122373/2016 and COVID/BD/151786/2021, and contract 2020.02802.CEECIND. Financial support from the Basque Government Industry and Education Departments under the ELKARTEK program is also acknowledged. Ainara Valverde acknowledges the Basque Government (Education Department) for her PhD grant (PREB_2018_1_004) .The European Commission Research & Innovation H2020-MSCA-RISE-2017 (Ref.: 778412) INDESMOF project is also acknowledged. The au-thors thank the technical and human support provided by SGIker (UPV/EHU) . | por |
dc.language.iso | eng | por |
dc.publisher | Pergamon-Elsevier Science Ltd | por |
dc.relation | UID/FIS/04650/20132019 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2019/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FFIS-MAC%2F28157%2F2017/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F122373%2F2016/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/POR_NORTE/COVID%2FBD%2F151786%2F2021/PT | por |
dc.rights | restrictedAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Adsorption | por |
dc.subject | Chromium | por |
dc.subject | Membrane | por |
dc.subject | MOF | por |
dc.subject | Water remediation | por |
dc.subject | Composite membrane | por |
dc.subject | Metal-organic frameworks | por |
dc.title | Reusable composite membranes for highly efficient chromium removal from real water matrixes | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
oaire.citationVolume | 307 | por |
dc.identifier.doi | 10.1016/j.chemosphere.2022.135922 | por |
dc.date.embargo | 10000-01-01 | - |
dc.identifier.pmid | 35940413 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Chemosphere | por |
oaire.version | AM | por |
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