<p>Numerous studies have highlighted the advantages of combining different advanced oxidation processes (AOPs) for wastewater treatment to enhance the degradation of organic pollutants. In this context, the classic Fenton and photo-Fenton processes were studied and compared for the oxidation of Acid Fuchsin dye. The effects of operational conditions such as stirring speed, pH of the medium, ferrous ion and hydrogen peroxide concentrations, and reaction time were investigated. The results showed that the UV/Fe<sup>2</sup>⁺/H<sub>2</sub>O<sub>2</sub> system increased dye degradation while reducing the amount of chemicals and reaction time compared to the classic Fenton process. A maximum oxidation percentage of 93.84% % was achieved within 20&#xa0;min of reaction under UV radiation (λ = 254&#xa0;nm) at pH 3, [Fe<sup>2</sup>⁺]<sub>0</sub> = 0.18&#xa0;mol·m<sup>−3</sup>, and [H<sub>2</sub>O<sub>2</sub>]<sub>0</sub> = 0.06&#xa0;mol·m<sup>−3</sup>, while only 84.56% of dye molecules were degraded using the Fe<sup>2</sup>⁺/H<sub>2</sub>O<sub>2</sub> system under the same conditions. In light of these results, the photo-Fenton process can be effectively used for textile wastewater treatment.</p>

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Fenton vs Photo Fenton for Acid Fuchsin Oxidation

  • Ouarda Moumeni,
  • Sarra Guilane,
  • Souad Djerad,
  • Meriem Zamouche,
  • Amani Kadouri,
  • Ilheme Snouci

摘要

Numerous studies have highlighted the advantages of combining different advanced oxidation processes (AOPs) for wastewater treatment to enhance the degradation of organic pollutants. In this context, the classic Fenton and photo-Fenton processes were studied and compared for the oxidation of Acid Fuchsin dye. The effects of operational conditions such as stirring speed, pH of the medium, ferrous ion and hydrogen peroxide concentrations, and reaction time were investigated. The results showed that the UV/Fe2⁺/H2O2 system increased dye degradation while reducing the amount of chemicals and reaction time compared to the classic Fenton process. A maximum oxidation percentage of 93.84% % was achieved within 20 min of reaction under UV radiation (λ = 254 nm) at pH 3, [Fe2⁺]0 = 0.18 mol·m−3, and [H2O2]0 = 0.06 mol·m−3, while only 84.56% of dye molecules were degraded using the Fe2⁺/H2O2 system under the same conditions. In light of these results, the photo-Fenton process can be effectively used for textile wastewater treatment.