Mirza Oda, A., Salih, A., Hadi, S., Jawad, A., Sadoon, A., Fahim, Y., Fadhil, A. (2014). Photocatalytic decolorization of methylene blue dye by zinc oxide powder. Alustath, 22(9), 2515-2508.
Amjed Mirza Oda; Ahmed Salih; Salih Hadi; Ahmed Jawad; Ahmed Sadoon; Yahya Fahim; Anfal Fadhil. "Photocatalytic decolorization of methylene blue dye by zinc oxide powder". Alustath, 22, 9, 2014, 2515-2508.
Mirza Oda, A., Salih, A., Hadi, S., Jawad, A., Sadoon, A., Fahim, Y., Fadhil, A. (2014). 'Photocatalytic decolorization of methylene blue dye by zinc oxide powder', Alustath, 22(9), pp. 2515-2508.
Mirza Oda, A., Salih, A., Hadi, S., Jawad, A., Sadoon, A., Fahim, Y., Fadhil, A. Photocatalytic decolorization of methylene blue dye by zinc oxide powder. Alustath, 2014; 22(9): 2515-2508.

Photocatalytic decolorization of methylene blue dye by zinc oxide powder

Journal of University of Babylon
Article 1, Volume 22, Issue 9, December 2014, Pages 2515-2508
Authors
Amjed Mirza Oda; Ahmed Salih; Salih Hadi; Ahmed Jawad; Ahmed Sadoon; Yahya Fahim; Anfal Fadhil
Abstract
Photocatalytic decolorization of methylene blue dye (MB) in water has been investig -ated in an immersed UV light irradiation slurry photoreactor using zinc oxide (ZnO) as a semiconductor photocatalyst. The effects of different parameters such as initial dye concentration, photocatalyst loading, and pH of solution on the decolorization rate of MB have been systematically investigated. A two-stage photocatalytic decolo -rization of MB, the first stage of fast decolorization rate and the subsequent second stage of rather slow decolorization rate, was found. The efficiency of decolorization of MB increased as initial MB concentration decreased. There was the optimal ZnO concentration being around 1500 mg L−1. The optimal pH was around 7 where reaction rate decreased above and under this pH value.
Keywords
methylene blue dye; zinc oxide powder
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