S. Kansal, G. Kaur, S. Singh
Sep 2, 2009
Citations
2
Influential Citations
34
Citations
Journal
Reaction Kinetics and Catalysis Letters
Abstract
In the present study, the photocatalytic degradation of 2,3-dichlorophenol(2,3-DCP) has been investigated in a batch reactor under UV light in slurry mode using titania P-25 (surface area 50 m2/g) as a photocatalyst and H2O2/NaOCl as oxidants. The variables studied include catalyst dose, solution pH, oxidant concentration and initial substrate concentration. The rate of degradation was studied in terms of changes in the concentration of the pollutants and reduction in chemical oxygen demand. The degradation rate of (2,3-DCP) was favorable at acidic pH with both oxidants. The optimum value of catalyst dose and oxidant concentration was found to be 0.75 g/L and 10 mM. The disappearance of 2,3-DCP obeyed pseudo-first order kinetics and the rate constant values were found to be 1.06 × 10−3s−1 and 8.7 × 10−4s−1 for TiO2 + H2O2 and TiO2 + NaOCl respectively.