Arsenic Removal From Water Employing Heterogeneous Photocatalysis With Tio2 Immobilized In Pet Bottles.

dc.creatorFostier, Anne Hélène
dc.creatorPereira, Maria do Socorro Silva
dc.creatorRath, Susanne
dc.creatorGuimarães, José Roberto
dc.date2008-May
dc.date2015-11-27T13:12:36Z
dc.date2015-11-27T13:12:36Z
dc.date.accessioned2018-03-29T01:06:26Z
dc.date.available2018-03-29T01:06:26Z
dc.identifierChemosphere. v. 72, n. 2, p. 319-24, 2008-May.
dc.identifier0045-6535
dc.identifier10.1016/j.chemosphere.2008.01.067
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/18342358
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/197710
dc.identifier18342358
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1297943
dc.descriptionArsenic oxidation (As(III) to As(V)) and As(V) removal from water were assessed by using TiO2 immobilized in PET (polyethylene terephthalate) bottles in the presence of natural sunlight and iron salts. The effect of many parameters was sequentially studied: TiO2 concentration of the coating solution, Fe(II) concentration, pH, solar irradiation time; dissolved organic carbon concentration. The final conditions (TiO2 concentration of the coating solution: 10%; Fe(II): 7.0 mg l(-1); solar exposure time: 120 min) were applied to natural water samples spiked with 500 microg l(-1) As(III) in order to verify the influence of natural water matrix. After treatment, As(III) and total As concentrations were lower than the limit of quantitation (2 microg l(-1)) of the voltammetric method used, showing a removal over 99%, and giving evidence that As(III) was effectively oxidized to As(V). The results obtained demonstrated that TiO2 can be easily immobilized on a PET surface in order to perform As(III) oxidation in water and that this TiO2 immobilization, combined with coprecipitation of arsenic on Fe(III) hydroxides(oxides) could be an efficient way for inorganic arsenic removal from groundwaters.
dc.description72
dc.description319-24
dc.languageeng
dc.relationChemosphere
dc.relationChemosphere
dc.rightsfechado
dc.rights
dc.sourcePubMed
dc.subjectArsenic
dc.subjectCatalysis
dc.subjectOxidation-reduction
dc.subjectPolyethylene Terephthalates
dc.subjectSunlight
dc.subjectTitanium
dc.subjectWater Purification
dc.titleArsenic Removal From Water Employing Heterogeneous Photocatalysis With Tio2 Immobilized In Pet Bottles.
dc.typeArtículos de revistas


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