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

dc.contributor.authorValdés, Oscar
dc.contributor.authorMarican, Adolfo
dc.contributor.authorMirabal-Gallardo, Yaneris
dc.contributor.authorSantos, Leonardo S.
dc.date.accessioned2022-09-30T14:05:18Z
dc.date.available2022-09-30T14:05:18Z
dc.date.issued2018
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/4068
dc.description.abstractThe 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.es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourcePolymers, 10(6), 626es_CL
dc.subjectQuaternary ammoniumes_CL
dc.subjectArsenices_CL
dc.subjectVinyltrimethoxysilanees_CL
dc.subjectGraft polymerizationes_CL
dc.subjectSilicaes_CL
dc.titleSelective and efficient arsenic recovery from water through quaternary amino-functionalized silicaes_CL
dc.typeArticlees_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.indexacionIsies_CL
dc.ucm.doidoi.org/10.3390/polym10060626es_CL


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