Utilization of NaOCl/Fe2+, HOCl/Fe2+, and H2O2/HOCl/Fe2+ Systems for Oxidative Degradation of Water Solutions of Dyes
Department of Environmental Science, Faculty of Chemical Technology, Slovak Technical University, Bratislava, Slovak Republic
Water solutions of some dyes produced by Bayer (Isolan Orange S-RL, Isolan Marineblau S-RL, and Isolan Gelb S-GL) were decolourized by the NaOCl/Fe2+, HOCl/Fe2+, and H2O2/HOCl/Fe2+ systems. These Fenton-like reactions also show a very good efficiency in lowering COD. The best results were obtained using coagulation initiated by the Fenton or Fenton-like reaction. The oxidation systems used led to better results than in a simple Fenton reaction.
Full text (PDF)