REMOVAL OF REACTIVE BLUE 181 DYE BY HETEROGENEOUS FENTON TECHNIQUE USING MODIFIED FLY ASH/H2O2

  • Đào Sỹ Đức
  • Trịnh Thị Thanh Hảo

Abstract

In this paper, the catalysts were synthesized by modified fly ash by iron (III) nitrate and used as heterogeneous Fenton catalyst for the degradation of Reactive Blue 181 (RB181). Some properties of raw and modified fly ashes were characterized by SEM, EDX and XRD. Effects of  some key operating parameters such as catalyst dose, pH, and hydrogen peroxide concentration on the treatment efficiency were studied and discussed. Kinetic rate constant of treatment process was also determined. The experimental results show that the heterogeneous Fenton technique using modified fly ash/H2O2 is a suitable method for removing RB 181 from aqueous solution. At the optimum conditions, more than 90 % of RB 181 was removed; the kinetics fitted well for pseudo first-order reaction
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Published
2014-11-06
Section
Articles