Catalyst Effect on Degradation of Organism by Nanoseconds Pulsed Discharge in Gas-Liquid Mixture*)

Guanyang Tang, Ryosuke Ohno, Atsushi Komuro, Kazunori Takahashi, Akira Ando

Research output: Contribution to journalArticlepeer-review

Abstract

The gas-liquid mixed phase plasma generated by a streamer discharge in bubbles was used for degradation of acetic acid as treatment of organism pollution in water. The synergistic effect of plasma and catalyst, TiO2 or Fe ions via electro-Fenton process, was utilized to enhance the production and utilization of hydroxyl radicals. When TiO2 powder was added to acetic acid solution, the hydrogen peroxide (H2O2) concentration formed by the combination of OH radicals significantly increased more than 25%. Whereas, when a grounded electrode\ was replaced to Fe, iron ions appears in the solution and H2O2 was fully resolved into OH radicals in the electro-Fenton process, resulting in the degradation of acetic acid. The energy efficiency of degradation of acetic acid increased from 0.78 g/kWh to 1.18 g/kWh and 1.31 g/kWh with the addition of TiO2 and replacement of iron electrode, respectively.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalPlasma and Fusion Research
Volume10
DOIs
Publication statusPublished - 2015

Keywords

  • catalyst
  • degradation of acetic acid
  • electro-Fenton process
  • gas-liquid plasma
  • pulsed high voltage
  • TiO

ASJC Scopus subject areas

  • Condensed Matter Physics

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