The Electro-peroxone Technology as a Promising Advanced Oxidation Process for Water and Wastewater Treatment

  • Yujue WangEmail author
Part of the The Handbook of Environmental Chemistry book series (HEC, volume 61)


The electro-peroxone (E-peroxone) process is a novel electrochemical advanced oxidation process (EAOP) that is enabled by in situ generation of hydrogen peroxide (H2O2) from cathodic oxygen (O2) reduction during conventional ozonation. The electro-generated H2O2 can considerably enhance ozone (O3) transformation to hydroxyl radicals (⋅OH), thus greatly enhancing pollutant degradation and total organic carbon (TOC) mineralization by the E-peroxone process than by conventional ozonation. Due to its higher kinetics of pollutant degradation, the E-peroxone process can also reduce reaction time and energy consumption required for water and wastewater treatment. In addition, the in situ generated H2O2 can effectively reduce bromate formation during the E-peroxone treatment of bromide-containing water compared to conventional ozonation. All oxidants (O3, H2O2, and ⋅OH) are produced on site at controllable rates during the E-peroxone process using only clean oxygen and electricity. No chemicals or catalysts are added in the E-peroxone process nor does it produce secondary pollutants. By simply installing low-cost carbon-based cathodes in ozone contactors, conventional ozonation systems that are commonly used in water and wastewater utilities can be easily retrofitted to the E-peroxone process with minimal upgrade work and costs. Therefore, the E-peroxone process can provide a convenient and economical way to significantly improve the performance of existing ozonation systems in many aspects and has thus emerged as a promising EAOP for practical water and wastewater treatment.


Electrochemical advanced oxidation process Electro-peroxone Hydrogen peroxide Micropollutant Ozone Wastewater treatment Water treatment 


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© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  1. 1.School of EnvironmentTsinghua UniversityBeijingChina

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