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6CCVD Research

Ozone water production using a SPE electrolyzer equipped with boron doped diamond electrodes

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-01-28
JournalWater Science & Technology Water Supply
AuthorsHua Li, Cheng Deng, Lei Zhao, Chong Gong, Meng Zhu
InstitutionsAcademy of Military Medical Sciences
Citations7

Abstract

Section titled ā€œAbstractā€

Abstract Electrochemical ozone production (EOP) is an attractive technology for disinfection and sterilization purposes. This work reports a study on the EOP performance of the solid polymer electrolyte (SPE) electrolyzer, including the optimization of electrode configuration and operation conditions. It is proven that the EOP performance is highly affected by electrode configuration. Tests using BDDs with different B/C ratios demonstrate that BDD-4.9 provides more reaction sites and faster electron transfer rate, exhibiting a high electrocatalytic activity for EOP. Regarding electrode thickness, 0.54 mm in thickness is the most suitable for the EOP from the perspective of less power consumption. Moreover, operation conditions were evaluated. It was found that increasing water flow rate is an effective strategy for promoting ozone dissolution, and within the present experimental range, the water flow rate of 63 LĀ·hāˆ’1 was identified. Meanwhile, through the study of all processes occurring inside the electrolyzer at higher current densities, the optimum current density was determined to be 125 mAĀ·cmāˆ’2. Based on these results, ozone water presents excellent performance in the killing of Escherichia coli with high inoculum concentrations, indicating potential application performance in the field of environment.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2007 - Electrochemical production of high-concentration ozone-water using freestanding perforated diamond electrodes [Crossref]
  2. 2006 - Ozone electrogeneration at a high current efficiency using a tantalum oxide-platinum composite electrode [Crossref]
  3. 2006 - Ozone electrogeneration on Pt-loaded reticulated vitreous carbon using flooded and flow-through assembly [Crossref]
  4. 2019 - DDBD ozone plasma reactor generation: the proper dose for medical applications
  5. 1994 - Influence of anions on oxygen/ozone evolution on PbO2/SPE and PbO2/Ti electrodes in neutral pH media
  6. 2020 - Electrochemical performance of thin free-standing boron-doped diamond nanosheet electrodes [Crossref]
  7. 2011 - Diamond nanowires for highly sensitive matrix-free mass spectrometry analysis of small molecules
  8. 2003 - Electrochemistry and green chemical processes: electrochemical ozone production [Crossref]
  9. 2020 - Enhanced electrochemical kinetics of highly-oriented (111)-textured boron-doped diamond electrodes induced by deuterium plasma chemistry
  10. 2008 - Decomposition of ozone in water at pH 4-8 [Crossref]

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