Photo-Catalytic Degradation of Rhodamine-B by using UV/TiO2 and Nb2O5 Process: A Kinetic Study

Authors

  • NIRAJ SUBHASHRAO TOPARE Department of Petroleum and Petrochemical Engineering, MAEER’S Maharashtra Institute of Technology, Pune, Maharashtra India

Keywords:

photo-catalytic degradation, kinetics, Rhodamine-B, TiO2, Nb2O5

Abstract

The photo-catalytic degradation of Rhodamine-B (RB) in aqueous solution with titanium dioxide (TiO2) and niobium pentaoxide (Nb2O5) as photocatalyst in slurry form has been carried out using UV-A light (254 nm). The effect of various parameters such as catalyst loading, pH and initial concentration of the RB dye on degradation have been determined. An attempt has been made to study the effect of process parameters through concentration of dye, amount of catalyst, and operating pH on photocatalytic degradation of RB. The experiments were carried out by varying initial concentration of dye
(10–50 ppm), amount of catalyst (0.25–1.5 g/l) and pH (2–11). The optimum catalyst dose was found to be 1.25 g/l of Nb2O5 and1 g/l of TiO2 for RB at 30 ppm respectively. The maximum degradation rate was observed in acidic medium at pH 3 for catalyst Nb2O5 andTiO2 respectively. Photo catalytic activity of TiO2 was found to be greater than Nb2O5. Finally, the photo-degradation kinetics was fitted in terms of Langmuir-Hinshelwood kinetic model.

 

 

Author Biography

  • NIRAJ SUBHASHRAO TOPARE, Department of Petroleum and Petrochemical Engineering, MAEER’S Maharashtra Institute of Technology, Pune, Maharashtra India
    MAEER’S, Maharashtra Institute of Technology, Pune, (Mh.) India

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Published

2019-04-16

Issue

Vol. 1 No. 3 (2014)

Section

Articles

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