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Removal of a mixture of metal nanoparticles from natural surface waters using traditional coagulation process

2020-08Journal article Restricted access
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dc.contributor.authorSerrão Sousa, Vânia
dc.contributor.authorRibau Teixeira, Margarida
dc.date.accessioned2021-06-24T11:35:23Z
dc.date.available2021-06-24T11:35:23Z
dc.date.issued2020-08
dc.description.abstractEngineered nanoparticles (ENPs) present in natural water systems and wastewater treatment plants, due to their wide use in industrial products and consumer goods, represent a hazard to human health, especially if occur in surface waters used for human consumption. Different nanoparticles may co-exist in the natural waters and until now no works have been developed on the impact of the co-existing nanoparticles on water treatment processes. Thus, this work evaluates the removal of different co-existing metal-based ENPs (TiO2, Ag and CuO) from natural surface waters applying the most used water treatment process, coagulation/flocculation/sedimentation (C/F/ S). Results showed that C/F/S is effective in the removal of the co-existing ENPs from the studied hydrophilic natural waters (low/medium turbidity and moderate/moderate-high natural organic matter content) with efficiencies above 93% for TiO2, Ag and CuO nanoparticles. The formation of destabilised nanoparticle-organic matter aggregates in C/F promoted their precipitation. For the lowest turbidity and organic content water, Ti presented the lowest concentration, followed by Ag and Cu, because of titanium properties. For the highest turbidity and organic content water, the residual Cu concentration was the lowest and Ag the highest, due to the natural water characteristics. Water characteristics played an important role on the coagulant demand and removal of ENPs mixture by C/F/S. Results also demonstrated that ENPs mixture did not hampered the treated water quality for turbidity and natural organic matter. For the lowest turbidity and natural organic matter water, ENPs appear to contribute to a higher removal of these parameters.
dc.description.sponsorshipPortuguese Foundation of Science and Technology, through the European Social Found from European Union [SFRH/BD/100402/2014]
dc.description.sponsorshipCENSE-Center for Environmental and Sustainability Research [UID/AMB/4085/2013]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.jwpe.2020.101285
dc.identifier.issn2214-7144
dc.identifier.urihttp://hdl.handle.net/10400.1/16424
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectEngineered nanoparticles
dc.subjectRemoval efficiency
dc.subjectConventional treatment
dc.subjectWater treatment
dc.subjectWater quality
dc.subject.otherEngineering
dc.titleRemoval of a mixture of metal nanoparticles from natural surface waters using traditional coagulation process
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage101285
oaire.citation.titleJournal of Water Process Engineering
oaire.citation.volume36
person.familyNameSerrão Sousa
person.familyNameRibau Teixeira
person.givenNameVânia
person.givenNameMargarida
person.identifier.ciencia-id3D18-B03F-52FB
person.identifier.ciencia-id9111-87FB-26AA
person.identifier.orcid0000-0002-3800-1688
person.identifier.orcid0000-0002-2153-3282
person.identifier.ridB-9012-2012
person.identifier.scopus-author-id8988625600
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication6f5ba6dd-2326-47fb-a278-85ce38b81c64
relation.isAuthorOfPublicationadfcbe65-54a7-4cce-b874-bb8e2bdc6167
relation.isAuthorOfPublication.latestForDiscoveryadfcbe65-54a7-4cce-b874-bb8e2bdc6167

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