Degradation of chelating agents in aqueous solution using advanced oxidation process (AOP)
Mika E T Sillanpää1, Tonni Agustiono Kurniawan, Wai-hung Lo
1Laboratory of Applied Environmental Chemistry (LAEC), Dept. Environmental Science, University of Eastern Finland (UEF), Mikkeli, Finland.
Advanced oxidation processes (AOPs) effectively remove chelating agents from water. The best AOP choice depends on effluent characteristics, technical feasibility, and environmental regulations.
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
Background:
- Chelating agents pose environmental challenges in aqueous solutions.
- Effective removal of these agents is crucial for water quality.
Purpose of the Study:
- To critically analyze the technical applicability of advanced oxidation processes (AOPs) for chelating agent removal.
- To compare the performance of different AOPs.
Main Methods:
- Literature survey on AOPs for chelating agent removal.
- Analysis of influencing factors: metal presence, pH, oxidant dose, pollutant concentration.
Main Results:
- Photocatalysis (UV/TiO2), ozonation, and Fenton's oxidation are common AOPs for pollutant mineralization.
- Performance varies significantly between different AOPs.
Conclusions:
- AOP selection requires careful consideration of effluent properties, technical viability, and regulatory compliance.
- Environmental impact is a key factor in choosing the optimal AOP for chelating agent removal.
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