NDLI: Pulsed dielectric barrier discharge generated at the gas-liquid interface for the degradation of the organic dye methyl red in aqueous solution

Content Provider	IEEE Xplore Digital Library
Author	Piroi, D. Magureanu, M. Mandache, N.B. David, V. Parvulescu, V.
Copyright Year	2010
Description	Author affiliation: University of Bucharest, Department of Chemical Technology and Catalysis, Romania (David, V.; Parvulescu, V.) \|\| National Institute for Lasers, Plasma and Radiation Physics, Department for Plasma Physics and Nuclear Fusion, Bucharest-Magurele, Romania (Piroi, D.; Magureanu, M.; Mandache, N.B.)
Abstract	The decomposition of the azo dye methyl red in aqueous solution was performed using a pulsed dielectric barrier discharge reactor (DBD) in coaxial configuration. The solution was made to flow as a thin layer on the surface of the inner electrode of the DBD reactor and the discharge was generated at the gas-liquid interface. In this way the oxidizing species formed in the discharge can easily penetrate the solution and react with the dye molecules in order to decompose them. After 10 minutes plasma treatment 93% removal of the dye was reached for 50 mg/L initial concentration of methyl red in solution. The corresponding removal yield was 52.5 g/kWh. Lower concentrations of the dye are removed faster, however the efficiency is lower in this case. It was found that the degradation of methyl red depended on the initial dye concentration, being faster for lower concentration, but the energy yield was higher for the higher initial concentration. Methyl red was degraded faster when decreasing the solution pH. Several degradation products, investigated by gas chromatography-mass spectrometry (GC-MS), were identified and discussed.
Starting Page	1323
Ending Page	1328
File Size	342539
Page Count	6
File Format	PDF
ISBN	9781424470198
ISSN	18420133
e-ISBN	9781424470204
DOI	10.1109/OPTIM.2010.5510325
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-20
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse generation Electrodes Spectroscopy Surface discharges Dielectrics Coaxial components Plasmas Inductors Surface treatment Thermal degradation
Content Type	Text
Resource Type	Article

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