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Removal of Alizarin Yellow Dye from Water Using Zinc Doped WO3 Catalyst


The degradation of Alizarin Yellow dye is studied here using the laser-induced photo-catalysis process in the presence of a zinc doped tungsten oxide catalyst. For optimization of the photo-catalytic process, the following parameters were investigated: dye concentration, laser irradiation time and incident laser energy. The calculated value of the reaction rate was found to be of a high value (k) = 0.197 (with estimated half-life of 6.5 min). This high value of k indicates the efficiency of this method in removing Alizarin Yellow dye from wastewater.

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The author greatly appreciates the scientific cooperation with Prof. M. A. Gondal, Laser Research Laboratory, Physics Department, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia.

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Correspondence to Zaki Shakir Seddigi.

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Seddigi, Z.S. Removal of Alizarin Yellow Dye from Water Using Zinc Doped WO3 Catalyst. Bull Environ Contam Toxicol 84, 564–567 (2010).

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  • Photo-catalysis
  • Zn doped WO3 catalyst
  • Wastewater treatment
  • Alizarin yellow removal
  • Reaction kinetics
  • Laser applications