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Electrical Energy per Order and Photodegradation Efficiency of Advanced Oxidation Processes

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Abstract:

This study investigates the decolorization of C.I. Reactive Red 2 (RR2) by the UV/TiO2, UV/ZnO, UV/TiO2/ZnO, O3, UV/O3, O3/MnO2, UV/H2O2, UV/H2O2/Fe3+, UV/O3/H2O2, and UV/O3/H2O2/Fe3+ systems. The values of the electrical energy per order of pollutant removal (EEO) and decolorization rate were determined and compared for all tested systems. The decolorization rate constant (ka) fit pseudo-first-order kinetics. Under 365 nm irradiation, the highest ka value and lowest EEO value were with the UV/O3 (0.0924 min-1) and O3/MnO2 (1.68) systems, respectively. Moreover, under 254 nm irradiation, the highest ka value and lowest EEO value were with the UV/O3/H2O2/Fe3+ (0.096 min-1) and UV/H2O2/Fe3+ (2.01) systems, respectively.

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Periodical:

Applied Mechanics and Materials (Volumes 291-294)

Pages:

764-767

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.291-294.764

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Online since:

February 2013

Authors:

Chung Hsin Wu, Chih Hao Lai, Wei Yang Chung

Keywords:

Decolorization, Ozone, Photodegradation, Power Consumption, TiO2

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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