title: Cosmetic wastewater treatment using the Fenton, Photo-Fenton and H2O2/UV processes.
abstract: Advanced Oxidation Processes (AOPs), such as the Fenton, photo-Fenton and H2O2/UV processes, have been investigated for the treatment of cosmetic wastewaters that were previously coagulated by FeCl3. The Photo-Fenton process at pH 3.0 with 1000/100 mg L(-1) H2O2/Fe(2+) was the most effective (74.0% Chemical Oxygen Demand (COD) removal). The Fenton process with 1200/500 mg L(-1) H2O2/Fe(2+) achieved a COD removal of 72.0%, and the H2O2/UV process achieved a COD removal of 47.0%. Spreading the H2O2 doses over time to obtain optimal conditions did not improve COD removal. The kinetics of the Fenton and photo-Fenton processes may be described by the following equation: d[COD]/dt = -a[COD] t(m) (t represents time and a and m are constants). The rate of COD removal by the H2O2/UV process may be described by a second-order reaction equation. Head Space, Solid-Phase MicroExtraction, Gas Chromatography and Mass Spectrometry (HS-SPME-GC-MS) were used to identify 48 substances in precoagulated wastewater. Among these substances, 26 were fragrances. Under optimal AOP conditions, over 99% of the identified substances were removed in 120 min.
authors.affiliation: a Department of Informatics and Environmental Quality Research, Faculty of Environmental Engineering , Warsaw University of Technology , Warsaw , Poland.
authors.forename: Piotr P
authors.initials: PP
authors.lastname: Marcinowski
authors.forename: Jan P
authors.initials: JP
authors.lastname: Bogacki
authors.forename: Jeremi H
authors.initials: JH
authors.lastname: Naumczyk
mesh_terms: D003358:Cosmetics; D005427:Flocculation; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D010084:Oxidation-Reduction; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D003358:Cosmetics; D006861:Hydrogen Peroxide; D007220:Industrial Waste; D007501:Iron; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Cosmetic wastewater; Fenton/photo-Fenton process; H2O2/UV process; advanced oxidation processes