☆ 4.7 Article

Advanced oxidation processes for water disinfection: Features, mechanisms and prospects

CHEMICAL ENGINEERING JOURNAL (2021)

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Journal

CHEMICAL ENGINEERING JOURNAL
Volume 409, Issue -, Pages -

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.128207

Keywords

Disinfection; Pathogens; Advanced oxidation processes; Reactive oxygen species; Sulfate radical

Categories

Engineering, Environmental Engineering, Chemical

Funding

  1. National Natural Science Foundation of China [52000053, 51961165104]
  2. Harbin Institute of Technology (Shenzhen) Research Start-Up Fund [20200086]
  3. Shenzhen Science and Technology Program [KQTD20190929172630447]
  4. Project of Thousand Youth Talents

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Advanced oxidation processes are effective in disinfection and microbial inactivation in water treatment, utilizing various reactive oxygen species to destroy pathogens with high efficiency and powerful purification capabilities.
The disinfection of microbial pathogens plays an important role in control of waterborne diseases and health issues. Recently, advanced oxidation processes (AOPs) are applied as powerful and effective technologies for wastewater purification and pathogen elimination. This review will showcase the recent endeavors in the fields and provide a comprehensive understanding of pathogens inactivation by diverse AOPs (i.e., Fenton processes, photocatalysis, electrochemical advanced oxidation processes (EAOPs), sonolysis, ozonation, and persulfatebased AOPs). The mechanisms of AOPs-based disinfection include the destruction of cell envelope, enzymes, and intracellular substances via diverse reactive oxygen species (ROS). The primary ROS are HO center dot, SO4 center dot-, O-2(center dot-) , O-1(2), and O-3, which exhibit different oxidative capacities, and can react with cell envelope to destroy the permeability of cell membrane. Specifically, this review emphasizes on the performances and mechanisms of different AOPs systems in microbial inactivation as well as perspectives in practical applications of disinfection in terms of feasibility, operating cost, and sustainability.

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