Next Article in Journal
Electrical Properties of Reversed-Polarity Ball Plasmoid Discharges
Previous Article in Journal
Low Temperature Plasma Jets: Characterization and Biomedical Applications
Open AccessArticle

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

1
Environmental and Nano Sciences (ENS) Research Group, Department of Chemistry, University of the Western Cape, Bellville 7535, South Africa
2
Department of Chemistry, Federal University of Technology, PMB 65, PO. Box 920 Minna, Niger State 920001, Nigeria
3
Sensor Lab, Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
4
Department of Chemistry, Faculty of Science, Lagos State University, LASU P.O. Box 0001, Ojo, Lagos 102001, Nigeria
5
Department of Physics, College of Science, Sultan Qaboos University, P.O. Box 36, 123 Al-Khoud, Muscat 123, Oman
6
Nanotechnology Research Center, Sultan Qaboos University, P.O. Box 33, Al-Khoud, Muscat 123, Oman
7
Petroleum and Chemical Engineering Department, Sultan Qaboos University, P.O. Box 33, Al-Khoud, Muscat 123, Oman
8
Department of Marine Science and Fisheries, Sultan Qaboos University, P.O. Box 34, Al-Khoud, Muscat 123, Oman
9
Center of Excellence in Marine Biotechnology, Sultan Qaboos University, P.O. Box 50, Al-Khoud, Muscat 123, Oman
10
Laboratory of Separation Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53851 Lappeenranta, Finland
*
Authors to whom correspondence should be addressed.
Plasma 2020, 3(2), 59-91; https://doi.org/10.3390/plasma3020007
Received: 3 March 2020 / Revised: 4 April 2020 / Accepted: 16 April 2020 / Published: 18 May 2020
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. View Full-Text
Keywords: advanced oxidation technologies; double cylindrical dielectric barrier discharge; measurement; reactive oxygen species; detoxification; decontamination; wastewater; methylene blue dye advanced oxidation technologies; double cylindrical dielectric barrier discharge; measurement; reactive oxygen species; detoxification; decontamination; wastewater; methylene blue dye
Show Figures

Graphical abstract

MDPI and ACS Style

Massima Mouele, E.S.; Tijani, J.O.; Masikini, M.; Fatoba, O.O.; Eze, C.P.; Onwordi, C.T.; Zar Myint, M.T.; Kyaw, H.H.; Al-Sabahi, J.; Al-Abri, M.; Dobretsov, S.; Laatikainen, K.; Petrik, L.F. Spectroscopic Measurements of Dissolved O3, H2O2 and OH Radicals in Double Cylindrical Dielectric Barrier Discharge Technology: Treatment of Methylene Blue Dye Simulated Wastewater. Plasma 2020, 3, 59-91.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Back to TopTop