Development and Optimization of Single Filament Plasma Jets for Wastewater Decontamination

New efficient depollution techniques for water decontamination, purification and disinfection are being sought to replace those classic methods (chemical, filtration, ozonisation, photochemical reactions) that have deficiency for some substances. The use of plasma technologies, discharges in, or in...

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Bibliographic Details
Published in:Plasma chemistry and plasma processing 2020-11, Vol.40 (6), p.1485-1505
Main Authors: Yehia, S. A., Zarif, M. E., Bita, B. I., Teodorescu, M., Carpen, L. G., Vizireanu, S., Petrea, N., Dinescu, G.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Charged particles
Chemical reactions
Chemistry
Chemistry and Materials Science
Classical Mechanics
Decoloring
Decontamination
Dielectric barrier discharge
Dyes
Emission analysis
Gas discharge tubes
Inorganic Chemistry
Mechanical Engineering
Methylene blue
Optical emission spectroscopy
Optimization
Original Paper
Parameter identification
Photochemical reactions
Plasma
Plasma jets
Pollutants
Radio frequency
Spectrum analysis
Ultraviolet radiation
Wastewater
Water purification
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Summary:New efficient depollution techniques for water decontamination, purification and disinfection are being sought to replace those classic methods (chemical, filtration, ozonisation, photochemical reactions) that have deficiency for some substances. The use of plasma technologies, discharges in, or in contact with, wastewater are promising approaches for the decomposition of pollutants by highly oxidative radicals, charged particles, UV radiation, etc. produced by plasma. In the present study we report on the potential of radiofrequency single and multiple filamentary Dielectric Barrier Discharge (DBD) jets for the decolorization of methylene blue (MB) dye in water solutions. Optical emission spectroscopy (OES) investigations were performed for the characterization of plasma evolving in air, and in liquid. The decolorization process was monitored by absorption spectroscopy. We determined the decolorization time, according to a variety of external parameters. The key parameters for obtaining the maximum decolorization rate were identified as being the discharge tube diameter, tube nature (glass/ceramic), the injected power in the discharge, the type of reactive gas and the number of filamentary plasma jets.
ISSN:0272-4324
1572-8986
DOI:10.1007/s11090-020-10111-0