Treatment of water contaminated with Reactive Red 198 (RR198) by Photo-Fenton Reagent

from aqueous medium using the Photo- Fenton process. The Fenton reagent that consists of a
mixture of hydrogen peroxide (H2O2) and Ferrous ions (Fe+2) was used to generate the hydroxyl
radicals (
.
OH) that attacks the target contaminant and degrade it. The influence of the main
parameters (concentration of Dye (RR198), concentration of photocatalyst (Fenton reagent,
H2O2 and pH) that govern the degradation kinetics was evaluated. The optimum conditions for
the photobleaching of dye had been established. The kinetics of degradation of the dye in the
dilute aqueous solutions follows first order kinetics. Complete mineralization of dye RR198 is
achieved by Photo- Fenton reagent. The photobleaching process follows first order kinetics in
respect to Langmuir-Hinshelwood model

Author(s): Menka Surana , Preeti Mehta , Kavita Pamecha and B.V. Kabra

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