Effectiveness and Mechanisms of Fenton-like Si-FeOOH/H₂O₂ in 2,4-Dichlorophenol Wastewater Treatment

Abstract

This research measured the effectiveness of Si-FeOOH as a type of heterogeneous Fenton-like catalyst made from alkaline precipitation methods, in catalyzing the degradation of 2,4-dichlorophenol (2,4-DCP) wastewater. Factors including catalyst dosage, pH, and hydrogen peroxide dosage were investigated, showing: with an initial concentration of 2,4-dichlorophenol at 100 mg/L, a dosage of catalyst at 0.1 g/L, a dosage of H₂O₂ at 1.5 ml/L, pH at 5 and indoors temperature at 25 ± 1 °C, the degradation rate of 2,4-dichlorophenol, COD_Cr and TOC has reached 94.21%, 83.67%, and 76.11%, separately. Comparisons were made with FeOOH used as catalyst, showing that Fenton-like Si-FeOOH is a better catalyst than FeOOH.

Keywords:

• 2,4-DCP wastewater
• Fenton-like
• Hydrogen peroxide
• Si-FeOOH
• Wastewater Treatment