4.5 Article

Sulfate radical-based advanced oxidation processes for water disinfection

期刊

ENVIRONMENTAL CHEMISTRY
卷 41, 期 9, 页码 2813-2822

出版社

CSIRO PUBLISHING
DOI: 10.7524/j.issn.0254-6108.2022042504

关键词

sulfate radical; advanced oxidation processes; microorganisms; disinfection

资金

  1. National Natural Science Foundation of China [21976214]
  2. Natural Science Foundation for Distinguished Young Scholars of Guangdong Province [2022B1515020097]
  3. Undergraduate Teaching Quality of Sun Yat-sen University [ESE384, ESE284, ESE318]

向作者/读者索取更多资源

Advanced oxidation processes based on sulfate radicals are promising technologies for inactivating pathogenic microorganisms in water and wastewater due to their high oxidation potential, wide pH adaptability, and negligible formation of undesired byproducts.
Sulfate radical (SO4-center dot)-based advanced oxidation processes (AOPs) have emerged as promising technologies for inactivation of pathogenic microorganisms in water and wastewater, due to the high oxidation potential of SO4-center dot towards different microorganisms, such as chlorine-resistant bacteria, fungi and viruses; strong oxidation at wide range of pH adaptation, and the negligible formation of undesired halogenated byproducts, which is suitable to be applied in reclaimed water, underground water or emergency places. This work provides an overview on the kinetic responses of various pathogenic/indicator microorganisms in different SO4-center dot-based AOPs (e.g., metal-assisted, light-assisted, and piezo-catalytic ones) and the mechanisms responsible for the inactivation, mainly including membrane permeability is first destroyed, which leads to enzyme and genome damage, thus effectively inhibiting and inactivating pathogenic microorganisms. The effects of water matrix (e.g.,pH, temperature, and various water matrix) on the disinfection efficacies have also been reviewed and discussed. The formation of undesired byproducts in the SO4-center dot-based AOPs was also reviewed and discussed. Key points from the review are summarized in the conclusive remarks. Knowledge gaps, research needs, and design requirements of engineering applications of these processes in real-world practice are proposed as future perspectives.

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