title: Selective photocatalytic oxidation of steroid estrogens in water treatment: urea as co-pollutant.
abstract: The objective of the present research concerns the competitive photocatalytic oxidation (PCO) and adsorption of steroid estrogens (SEs) on titanium dioxide in presence of urea. The results showed the indifference of SEs towards the presence of urea in concentrations characteristic for the domestic sewage. The selective PCO of SEs appeared to be feasible in alkaline media, in which the PCO exhibited the highest efficiency. Ethanol used for hydrophobic SEs dissolution in water appeared to be interfering with the PCO.
authors.affiliation: Department of Chemical Technology, Lappeenranta University of Technology, Skinnarilankatu 34, 53850 Lappeenranta, Finland. tatjana.karpova@gmail.com
authors.forename: T
authors.initials: T
authors.lastname: Karpova
authors.forename: S
authors.initials: S
authors.lastname: Preis
authors.forename: J
authors.initials: J
authors.lastname: Kallas
mesh_terms: D000327:Adsorption; D002384:Catalysis; D004958:Estradiol / Q000737:chemistry* / Q000528:radiation effects*; D004967:Estrogens / Q000737:chemistry* / Q000528:radiation effects*; D000431:Ethanol / Q000737:chemistry; D004997:Ethinyl Estradiol / Q000737:chemistry* / Q000528:radiation effects*; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014508:Urea / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000528:radiation effects
chemical_list: D004967:Estrogens; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D000431:Ethanol; D004997:Ethinyl Estradiol; D004958:Estradiol; D014508:Urea; D014025:Titanium