Author(s)

H. Gulyas, R. Sturmer & L. Hintze

Abstract

Experiences with solar application of photocatalytic oxidation for dye removal from a model textile industry wastewater H. Gulyas, R. Sturmer and L. Hintze Institute of Municipal and Industrial Wastewater Management, Technical University of Hamburg-Harburg, Germany Abstract Aqueous solutions of the azo dye "Acid Orange 7" simulating dye-containing textile industry wastewaters have been irradiated by sunlight during circulation through a 2 cm deep channel conducted as a meander in a 2.5 x 1 m double-skin sheet reactor made of Plexiglas® in batch experiments after addition of different titanium dioxide concentrations (1 to 10 g/1). The experiments have been performed in a region with relatively low solar irradiation (Hamburg/Germany). Depending on titanium dioxide concentration, different portions of the dye have been mineralized as recorded by TOC analyses. With the highest investigated titanium dioxide concentration, specific TOC removals (g TOC/kWh photons passing the reactor sur

Keywords