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NIKIFOROV, A. LEYS, C. NĚMCOVÁ, L. KRČMA, F.
Originální název
Physical properties and chemical efficiency of an underwater dc discharge generated in He, Ar, N2 and air bubbles
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
A dc excited discharge generated in bubbles (He, Ar, Air, N2) in liquid phase is investigated in this work. Voltage/current characteristics and emission spectra of the discharge are recorded in the current range 10-30 mA. Electron density in the discharge is measured from the Stark broadening of H-beta line and it is in the order of 2-6 x 1020 m-3 depending on the feed gas. Estimation of electron temperature is carried out based on the balance of charged particles. Gas temperature is estimated by the slope of the Boltzmann plot and by the simulation of OH band with different T 1 rot , T 2 rot and Tvib. Rotation temperature in the He discharge is 1200K at I = 10mA and linearly increases up to 1600K with growth of current. In the plasma of molecular gases the temperature is higher and almost constant at different currents. Chemical efficiency of the plasma is measured by the production of H2O2 and by the destruction of Direct Blue 106. The highest energy consumption of H2O2 generation is achieved in the air discharge and it decreases up to 50% in the He plasma. Maximal efficiency of dye destruction is observed in the N2 plasma characterized by an energy consumption of dye decomposition of 0.86 g kWh-1.
Klíčová slova
underwater discharge, discharge in bubbles, hydrogen peroxide
Autoři
NIKIFOROV, A.; LEYS, C.; NĚMCOVÁ, L.; KRČMA, F.
Rok RIV
2011
Vydáno
28. 6. 2011
ISSN
0963-0252
Periodikum
PLASMA SOURCES SCIENCE & TECHNOLOGY
Ročník
20
Číslo
3
Stát
Spojené království Velké Británie a Severního Irska
Strany od
034008
Strany do
10
Strany počet
BibTex
@article{BUT50404, author="Anton {Nikiforov} and Christophe {Leys} and Lucie {Němcová} and František {Krčma}", title="Physical properties and chemical efficiency of an underwater dc discharge generated in He, Ar, N2 and air bubbles", journal="PLASMA SOURCES SCIENCE & TECHNOLOGY", year="2011", volume="20", number="3", pages="034008--10", issn="0963-0252" }