Spectroscopic Measurements of Dissolved O3, H2O2 and OH Radicals in Double Cylindrical Dielectric Barrier Discharge Technology: Treatment of Methylene Blue Dye Simulated Wastewater

Emile Salomon Massima Mouele*, Jimoh O. Tijani, Milua Masikini, Ojo O. Fatoba, Chuks P. Eze, Chionydua T. Onwordi, Myo Tay Zar Myint, Htet Htet Kyaw, Jamal Al-Sabahi, Mohammed Al-Abri, Sergey Dobretsov, Katri Laatikainen, Leslie F. Petrik*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Advanced oxidation technologies (AOTs) focusing on nonthermal plasma induced by dielectric barrier discharge are adequate sources of diverse reactive oxygen species (ROS) beneficial for water and wastewater treatment. In this study, indigo, peroxytitanyl sulphate and terephthalic acid methods were used to approximate the concentrations of O3, H2O2 and OH produced in a double cylindrical dielectric barrier discharge (DCDBD) plasma configuration. The effect of pH and scavengers as well as the amount of chemical probes on the generation of oxidants was investigated. The efficiency of the DCDBD reactor was further evaluated using methylene blue (MB) as model pollutant. The results demonstrated that the formation of oxidants O3, H2O2 and OH in the DCDBD reactor was pH-dependent. Furthermore, the presence of scavengers such as phosphates, bicarbonates and carbonates in the solution diminished the amount of OH in the system and hence could impact upon the degree of detoxification of targeted pollutants during water and wastewater treatment. The MB simulated dye was totally decomposed into H2O, dissolved CO2 and simpler aqueous entities. Herein the DCDBD design is an adequate AOT that can be used worldwide for effective decontamination of water and wastewater.

Original languageEnglish
Pages (from-to)59-91
Number of pages33
Issue number2
Publication statusPublished - Jun 2020


  • advanced oxidation technologies
  • decontamination
  • detoxification
  • double cylindrical dielectric barrier discharge
  • measurement
  • methylene blue dye
  • reactive oxygen species
  • wastewater

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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