Journal
JOURNAL OF ELECTROSTATICS
Volume 64, Issue 1, Pages 35-43Publisher
ELSEVIER
DOI: 10.1016/j.elstat.2004.12.007
Keywords
gliding arc; water discharge; gas decomposition; plasma
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The effects of gas composition on gliding arc (glidarc) electrical discharge reactors with pure water have been studied. The glidarc reactors utilized AC electrical discharges with two different electrode configurations. In one case a set of two stainless steel electrodes connected to a single power supply was placed in the gas phase over the liquid surface (power = 250-300 W, maximum voltage = 12 kV). The second experimental arrangement utilized a reactor with a set of three stainless steel electrodes supplied by two identical high-voltage transformers, where the electrodes were placed over the water surface or with the water sprayed directly in the plasma formed between the electrodes (power = 500-600 W, maximum voltage = 12 kV). The variation of pH and conductivity and the formation of hydrogen peroxide, ozone, nitrate, and hydrogen were measured. The effects of the type of gas, including pure oxygen, pure nitrogen, and dry air, were determined. (c) 2005 Elsevier B.V. All rights reserved.
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