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Selective and efficient arsenic recovery from water through quaternary amino-functionalized silica

dc.contributor.authorValdés O.
dc.contributor.authorMarican A.
dc.contributor.authorMirabal-Gallardo Y.
dc.contributor.authorSantos L.S.
dc.date.accessioned2020-09-02T22:29:51Z
dc.date.available2020-09-02T22:29:51Z
dc.date.issued2018
dc.identifier10.3390/polym10060626
dc.identifier.citation10, 6, -
dc.identifier.issn20734360
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6486
dc.descriptionThe free-radical graft polymerization of acryloxyethyl-trimethylammonium chloride onto commercial silica particles was studied experimentally for extraction of arsenic ions from water. Two steps were used to graft acryloxyethyl-trimethylammonium chloride (Q) onto the surface of nanosilica: anchoring vinyltrimethoxysilane (VTMSO) onto the surface of silica to modify it with double bonds and then grafting Q onto the surface of silica with potassium persulfate as an initiator. The products were characterized by Fourier-transform infrared (FT-IR), the thermogravimetric analysis (TGA), scanning electron microscopy (SEM), 13C, 29Si nuclear magnetic resonance (NMR), and X-ray powder diffraction (XRD). The results showed that it is easy to graft Q onto the surface of silica under radical polimerization. The morphology analysis of silica and modified silica indicated that the silica decreased the size scale after modification. Q/VTMSO-SiO2 was tested for its ability to remove arsenic from drinking water. The results show that the new silica hybrid particles efficiently remove all arsenate ions. In addition, Q/VTMSO-SiO2 showed better sorption capacities for other metal ions (such as copper, zinc, chromium, uranium, vanadium, and lead) than a commercial water filter. © 2018 by the authors.
dc.language.isoen
dc.publisherMDPI AG
dc.subjectArsenic
dc.subjectGraft polymerization
dc.subjectQuaternary ammonium
dc.subjectSilica
dc.subjectVinyltrimethoxysilane
dc.subjectArsenic
dc.subjectChlorine compounds
dc.subjectFree radical polymerization
dc.subjectFree radicals
dc.subjectGrafting (chemical)
dc.subjectMetal ions
dc.subjectMetals
dc.subjectNuclear magnetic resonance
dc.subjectOrganic coatings
dc.subjectPotable water
dc.subjectPotassium chloride
dc.subjectPotassium compounds
dc.subjectScanning electron microscopy
dc.subjectSilica
dc.subjectThermogravimetric analysis
dc.subjectWater filtration
dc.subjectX ray powder diffraction
dc.subjectFourier transform infrared
dc.subjectFunctionalized silica
dc.subjectGraft polymerization
dc.subjectMorphology analysis
dc.subjectNuclear Magnetic Resonance (NMR)
dc.subjectPotassium persulfate
dc.subjectQuaternary ammonium
dc.subjectVinyltrimethoxysilanes
dc.subjectChemicals removal (water treatment)
dc.titleSelective and efficient arsenic recovery from water through quaternary amino-functionalized silica
dc.typeArticle


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