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Advanced Oxidation Processes For Microplastic Removal From Water: A Comparative Study Of UV/H₂O₂, Ozonation, And Fenton Reactions
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Lab tests treated water samples spiked with polyethylene and polystyrene microplastic particles using three chemical treatment methods. All three methods broke down 68% to 95% of the microplastics, with the Fenton reaction working best and smaller particles breaking down more easily than larger ones.
Rising as a major environmental issue with possible effects on aquatic ecosystems and human health is microplastic contamination. Three advanced oxidation processes (AOPs) - UV/H₂O₂, ozonation, and Fenton reaction - are investigated in this work for the microplastics removal from water. Synthetic water samples spiked with polyethylene (PE) and polystyrene (PS) microplastics of varied diameters (1–500 µm) were used in tests. We assessed the effects of process factors including pH, reaction duration, and oxidant concentration. With removal efficiency ranging from 68% to 95%, results show that all three AOPs essentially broke down microplastics. Following UV/H₂O₂ and ozonation, the Fenton reaction exhibited the best total removal efficiency. Under all methods, smaller microplastics (<100 µm) were more vulnerable to breakdown. We created a kinetic model to forecast
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