4.5 Article

Chemical and Physical Characteristics of Pulsed Electrical Discharge Within Gas Bubbles in Aqueous Solutions

期刊

PLASMA CHEMISTRY AND PLASMA PROCESSING
卷 30, 期 1, 页码 1-20

出版社

SPRINGER
DOI: 10.1007/s11090-009-9207-x

关键词

Pulsed electrical discharge; Bubbles; Hydrogen; Hydrogen peroxide; Energy yield efficiency; Electrode protrusion length

资金

  1. National Science Foundation [CBET 0839984]
  2. Materials Research and Technology Center (Florida State University)
  3. Div Of Chem, Bioeng, Env, & Transp Sys
  4. Directorate For Engineering [0839984] Funding Source: National Science Foundation

向作者/读者索取更多资源

The chemical and physical characteristics of pulsed electrical discharge within gas bubbles immersed in an aqueous solution were investigated using a reactor with long protrusion length high voltage needle electrodes. Argon gas was introduced at the base of the needle electrode causing gas bubbles to flow upwards in contact with the needle. The effects of needle protrusion length were evaluated by using 2, 4, and 6 cm length needles under a wide range of power input (3-78 W). No significant differences in chemical or electrical characteristics were found among the different protrusion lengths. H-2 and H2O2 generation rates were proportional to input power and the energy yield efficiency for these species was not affected dramatically by input power. The results of discharge within bubbles in aqueous solution were also compared with those for direct liquid phase discharge and gas phase discharge above the liquid surface.

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