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Titania nano-coated quartz wool for the photocatalytic mineralisation of emerging organic contaminants

TitleTitania nano-coated quartz wool for the photocatalytic mineralisation of emerging organic contaminants
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2018
AuthorsSaracino, M., Pretali L., Capobianco M.L., Emmi S.S., Navacchia M.L., Bezzi Federica, Mingazzini C., Burresi Emiliano, and Zanelli A.
JournalWater Science and Technology
KeywordsAdvanced Oxidation Processes, analysis, article, carbamazepine, carbon, Catalysis, catalyst, Chemical, chemistry, coating, contamination, Deionised waters, Deionized water, Diclofenac, Dissolution, drinking water, Emerging contaminant, Emerging organic contaminants, high performance liquid chromatography, Impurities, intermethod comparison, liquid chromatography, material coating, mineralogy, nanoparticle, Nanoparticles, octoxinol, Organic carbon, organic pollutant, organic pollution, oxidation, oxidation reduction reaction, Oxidation resistance, Oxidation-Reduction, oxybenzone, Photo catalytic degradation, Photocatalysis, Photodegradation, photolysis, Potable water, procedures, Quartz, radiation response, Scanning electron microscopy, Silicon Dioxide, sulisobenzone, Surface properties, surface property, surface water, tap water, Titanium, Titanium compounds, Titanium dioxide, titanium dioxide nanoparticle, total organic carbon, Ultraviolet photolysis, Ultraviolet radiation, Ultraviolet Rays, waste water, Wastewater treatment, wastewater treatment plant, Wastewater treatment plants, Water, water management, water pollutant, Water Pollutants, Water Purification, Water quality, Water treatment, Wool, X ray diffraction, Yarn

Many emerging contaminants pass through conventional wastewater treatment plants, contaminating surface and drinking water. The implementation of advanced oxidation processes in existing plants for emerging contaminant remediation is one of the challenges for the enhancement of water quality in the industrialised countries. This paper reports on the production of a TiO2 nano-layer on quartz wool in a relevant amount, its characterisation by X-ray diffraction and scanning electron microscopy, and its use as a photocatalyst under ultraviolet radiation for the simultaneous mineralisation of five emerging organic contaminants (benzophenone-3, benzophenone-4, carbamazepine, diclofenac, and triton X-100) dissolved in deionised water and tap water. This treatment was compared with direct ultraviolet photolysis and with photocatalytic degradation on commercial TiO2 micropearls. The disappearance of every pollutant was measured by high performance liquid chromatography and mineralisation was assessed by the determination of total organic carbon. After 4 hours of treatment with the TiO2 nano-coated quartz wool, the mineralisation exceeds 90% in deionised water and is about 70% in tap water. This catalyst was reused for seven cycles without significant efficiency loss. © IWA Publishing 2018.


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Citation KeySaracino2018409