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Reaction Kinetics and Catalysis Letters

, Volume 91, Issue 1, pp 161–168 | Cite as

Decolorization of AZO dyes using catalytic ozonation

  • Chung-Hsin Wu
  • Chao-Yin Kuo
  • Chung-Liang Chang
Article

Abstract

Decolorization of C.I. Reactive Red 2 (RR2) and C.I. Acid Orange 6 (AO6) using a catalytic ozonation system was evaluated. The decolorization rates for RR2 and AO6 were accelerated by at least 30% by adding MnO2 to the O3 system; additionally, the decolorization rate increased as the MnO2 dosage and ozone power consumption increased. Enhanced MnO2 catalytic ozonation was more apparent for AO6 than for RR2.

Keywords

O3 MnO2 C.I. Reactive Red 2 C.I. Acid Orange 6 

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Copyright information

© Akadémiai Kiadó 2007

Authors and Affiliations

  • Chung-Hsin Wu
    • 1
  • Chao-Yin Kuo
    • 2
  • Chung-Liang Chang
    • 3
  1. 1.Department of Environmental EngineeringDa-Yeh UniversityDa-Tsuen, Chang-HuaTaiwan, R.O.C.
  2. 2.Department of Safety Health and Environmental EngineeringNational Yunlin University of Science and TechnologyTouliu, YunlinTaiwan, R.O.C.
  3. 3.Department of Environmental Engineering and HealthYuanpei University of Science and TechnologyHsinchuTaiwan, R.O.C.

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