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Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

Author

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  • Monica Brienza

    (Department of Chemistry, Laboratory of Chemical and Environmental Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
    UMR HydroSciences 5569, Montpellier University, 15 Avenue Ch, 34093 Flahault, France)

  • Ioannis A. Katsoyiannis

    (Department of Chemistry, Laboratory of Chemical and Environmental Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

Abstract

Water scarcity and water pollution is a worldwide problem and has driven research into eco-friendly and low-energy cost efficient remediation. The reuse of wastewater for non-potable purpose after proper treatment is the only sustainable solution to the problem. Advanced oxidation processes (AOP) based on the in-situ generation of hydroxyl radicals have been intensively investigated for this purpose as a treatment step to achieve wastewater reuse. The main degradation mechanism of AOPs is based on the reaction of hydroxyl radicals with dissolved organic matter. However, hydroxyl radicals follow unselective multi-step pathways, limiting their efficiency in complex environmental matrices. To overcome such limitations, AOP treatment, based on generation of sulfate radicals, has been developed and widely investigated. This current mini-review will cover the most recent developments regarding emerging contaminant removal, i.e., organic micropollutants, using sulfate radicals generated by active persulfate or peroxymonosulfate, with a focus on an application to wastewater effluents for possible wastewater reuse.

Suggested Citation

  • Monica Brienza & Ioannis A. Katsoyiannis, 2017. "Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater," Sustainability, MDPI, vol. 9(9), pages 1-18, September.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:9:p:1604-:d:111392
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