Studies on Oxidants' Generation in a Foaming Column with a Needle to Dielectric Covered Plate Electrode

Joanna Pawłat, Nobuya Hayashi, Satoshi Ihara, Chobei Yamabe, Iwo Pollo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The generation of oxidative products in the newly investigated foaming system was improved by a discharge between a high voltage multineedle electrode and a dielectric covered plate electrode. A uniformity of the discharge was observed. The presence of alumina dielectric seems to be responsible of the homogenous spatial distribution of the discharge. The absolute power and energy of the discharge was determined. Besides, in larger gap space the foam quality was improved. This way of oxidant's generation, which might be prospective for the treatment of exhaust gas and wastewater, has not been investigated by the other researchers' groups as yet. During the laboratory test 875 ppm of gaseous ozone, 0.5 mg/l of dissolved ozone and 62 mg/l of hydrogen peroxide was obtained at 14 kV of applied voltage and 5 l/min of oxygen gas flow in the present configuration used for the discharge generation. The average yield of gaseous ozone production ranged 55 gO3/kWh.

Original languageEnglish
Pages (from-to)569-583
Number of pages15
JournalPlasma Chemistry and Plasma Processing
Volume23
Issue number3
DOIs
Publication statusPublished - Sep 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

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