Collect. Czech. Chem. Commun. 2008, 73, 679-689

A Novel Route for Waste Water Treatment: Photo-Assisted Fenton Degradation of Naphthol Green B

Anil Kumara, Mukesh Paliwala, Rameshwar Ametab and Suresh C. Ametab,*

a Photochemistry and Solar Energy Laboratory, Department of Chemistry, University College of Science, M. L. Sukhadia University, Udaipur 313001, India
b Department of Chemistry, Government Meera Girls College, Udaipur 313001, India


This study was conducted to assess the removal of the Naphthol Green B dye from aqueous medium using the photo-Fenton process. The Fenton reagent, a mixture of hydrogen peroxide and Fe3+ ions, was used to generate the hydroxyl radical (OH) that degrades the dye. Experiments were conducted at laboratory temperature and atmospheric pressure to examine the effect of reaction conditions such as the concentration of Fe3+ ions, the dye and hydrogen peroxide, pH, and light intensity on the reaction rate. The progress of the photochemical degradation was monitored spectrophotometrically. The optimum photochemical degradation conditions were determined. Naphthol Green B was completely degraded into CO2 and H2O. A tentative mechanism for photochemical bleaching of the dye by the photo- Fenton reaction has been proposed.

Keywords: Photodegradation; Photo-Fenton process; Naphthol Green B; Hydrogen peroxide.

References: 41 live references.