Abstract
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.
Recommended Citation
E. S. Massima Mouele and J. O. Tijani and M. Masikini and O. O. Fatoba and C. P. Eze and C. T. Onwordi and M. T. Zar Myint and H. H. Kyaw and J. Al-Sabahi and M. Al-Abri and S. Dobretsov and K. Laatikainen and L. F. Petrik, "Spectroscopic Measurements of Dissolved O3, H2O2 and OH Radicals in Double Cylindrical Dielectric Barrier Discharge Technology: Treatment of Methylene Blue Dye Simulated Wastewater," Plasma, vol. 3, no. 2, pp. 59 - 91, MDPI, Jun 2020.
The definitive version is available at https://doi.org/10.3390/plasma3020007
Department(s)
Mining Engineering
Publication Status
Open Access
Keywords and Phrases
advanced oxidation technologies; decontamination; detoxification; double cylindrical dielectric barrier discharge; measurement; methylene blue dye; reactive oxygen species; wastewater
International Standard Serial Number (ISSN)
2571-6182
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Jun 2020
