Using FeGAC/H2O2 process for landfill leachate treatment

Area of Science:

• Environmental Engineering
• Water Treatment Technologies
• Advanced Oxidation Processes

Background:

• Landfill leachate poses significant environmental challenges due to high contamination levels.
• Effective treatment methods are crucial for managing leachate from municipal solid waste sites.
• Existing treatments may not sufficiently address complex organic pollutants in leachate.

Purpose of the Study:

• To develop and evaluate an innovative catalytic oxidation process for treating landfill leachate.
• To assess the efficacy of iron oxide coated granular activated carbon (FeGAC) in enhancing hydrogen peroxide oxidation.
• To determine the removal efficiencies of organic compounds, including humic acids, fulvic acids, and non-humic substances.

Main Methods:

• Implementation of an advanced catalytic oxidation process utilizing FeGAC and hydrogen peroxide (H(2)O(2)).
• Treatment of landfill leachate sourced from central Taiwan.
• Comparative analysis of FeGAC/H(2)O(2) process against H(2)O(2) alone at varying conditions (e.g., pH 6).

Main Results:

• The FeGAC/H(2)O(2) process demonstrated high effectiveness in removing organic compounds from landfill leachate.
• FeGAC significantly improved the oxidative capacity of H(2)O(2), leading to superior pollutant removal.
• At pH 6, the FeGAC/H(2)O(2) process achieved 70% removal efficiency, compared to only 8% for the H(2)O(2) process.

Conclusions:

• The FeGAC/H(2)O(2) process is a highly effective advanced oxidation technology for landfill leachate treatment.
• FeGAC acts as an efficient catalyst for hydrogen peroxide, enhancing the degradation of organic pollutants.
• This combined approach leverages FeGAC's adsorption capabilities and catalytic activity for superior leachate remediation.