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Related Experiment Video

Updated: Sep 6, 2025

The Portable Chemical Sterilizer PCS, D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military
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Chlorine dioxide-based oxidation processes for water purification：A review.

Meng-Yuan Xu1, Yi-Li Lin2, Tian-Yang Zhang1

  • 1State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.

Journal of Hazardous Materials
|June 24, 2022
PubMed
Summary

Chlorine dioxide (ClO2) is a powerful water disinfectant. Combined processes reduce by-products while maintaining effective sterilization, offering new insights for water treatment technologies.

Keywords:
Chlorine dioxideCombined processDisinfection by-productsInactivationWater treatment

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Area of Science:

  • Environmental Chemistry
  • Water Treatment Technologies

Background:

  • Chlorine dioxide (ClO2) is a broad-spectrum disinfectant with high oxidation efficiency.
  • It offers reduced formation of organochlorinated by-products compared to traditional methods.

Purpose of the Study:

  • To provide an updated overview of ClO2-based oxidation processes in water treatment.
  • To assess pros and cons of combined ClO2 processes and propose DBP control strategies.

Main Methods:

  • Systematic review of scientific information and experimental data on ClO2 water purification.
  • Discussion of kinetic and mechanistic data on ClO2 reactivity towards micropollutants.

Main Results:

  • ClO2 selectively oxidizes electron-rich moieties, inorganic ions, and microorganisms.
  • Formation of chlorite and chlorate are key concerns during ClO2 oxidation.
  • Combined processes (e.g., with ferrous ions, ozone, UV) can reduce by-product generation.

Conclusions:

  • Combined ClO2 processes offer reduced by-product generation while ensuring effective disinfection.
  • This research provides insights into advanced ClO2-based water treatment applications.