Catalytic Degradation of Eriochrome Black T Dye By Fenton and Photo-Fenton Reaction

Youssef, Nadia A.; Shaban, Seham A.; Ibrahim, Fatma A.; Mahmoud, Aya S.

doi:10.21608/jsrs.2015.18489

Catalytic Degradation of Eriochrome Black T Dye By Fenton and Photo-Fenton Reaction

Document Type : Original Article

Authors

¹ Chemistry department, Faculty of Women Ain Shams University,Helioplis,Cairo,Egypt.

² Egyptian Petroleum Research Institute (EPRI), Naser City, Cairo,Egypt

10.21608/jsrs.2015.18489

Abstract

The oxidation with Fenton and photo-Fenton reaction in homogeneous system is an effective technology for destruction of a large number of different dyes. The effects of different parameters like the concentrations of H₂O₂, the concentration of FeSO₄, the initial concentration of the dye and the pH of the solution on the degradation of eriochrome Black T (EBT) dye were carried out to investigate the process’s optimal operational conditions with the best results at low cost. A suitable operating conditions were selected as: the concentration of H₂O₂ 1.14×10^-2M, the concentration of FeSO₄ 1.85×10^-4 M, the initial concentration of EBT dye 9.34×10^-5 M and the pH equal 3.2 at room temperature. In the given conditions, more than 98.37% of degradation efficiency was achieved within 60 min. of the reaction. Photo-Fenton reaction was investigated and it was found that the degradation efficiency increased from 94 % by Fenton reaction to 99.83% by photo-Fenton reaction at 15 min. The kinetic study indicated that the degradation kinetics of EBT dye followed the second-order kinetics.

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