An investigation on pulse discharge effect on the surface chemical transformation of fly ash

Yuanxiang Zhou, M. Nifuku, G. Hajós, S. Asada, H. Katoh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Non-thermal plasma has been widely investigated to apply to environmental protection. The effectiveness of electrical discharge technology on decomposition and transformation of toxic gases has been widely studied, while its influence on the toxic substances in fly ash is not clear. In this paper, the surface chemical transformation of fly ash from electrostatic precipitators has been studied by surface pulse discharge. A surface mechanical change and a destruction of powder particles were visible after discharging. This indicates that the pulse discharge causes an effective destruction of the fly ash powder and its particles. The composition analysis showed that volatile organic compound (VOC) content in samples decreases after discharging. A positive pulse discharge showed a higher decrease in VOC content than that of a negative one did. We concluded that by using the surface pulse discharge, especially in the case of positive pulse discharge, the non-thermal plasma is also effective on decomposition and transformation of toxic substances in fly ash, which reaches a 51% VOC decomposition effectiveness.

Original languageEnglish
Pages (from-to)195-199
Number of pages5
JournalThin Solid Films
Volume386
Issue number2
DOIs
Publication statusPublished - May 15 2001

Fingerprint

Coal Ash
fly ash
Fly ash
Volatile Organic Compounds
Poisons
Volatile organic compounds
volatile organic compounds
pulses
Decomposition
Powders
Plasmas
decomposition
Electrostatic precipitators
destruction
Environmental protection
Discharge (fluid mechanics)
electrostatic precipitators
Gases
Chemical analysis
causes

Keywords

  • Fly ash
  • Plasma
  • Surface chemical transformation
  • VOC

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

An investigation on pulse discharge effect on the surface chemical transformation of fly ash. / Zhou, Yuanxiang; Nifuku, M.; Hajós, G.; Asada, S.; Katoh, H.

In: Thin Solid Films, Vol. 386, No. 2, 15.05.2001, p. 195-199.

Research output: Contribution to journalArticle

Zhou, Yuanxiang ; Nifuku, M. ; Hajós, G. ; Asada, S. ; Katoh, H. / An investigation on pulse discharge effect on the surface chemical transformation of fly ash. In: Thin Solid Films. 2001 ; Vol. 386, No. 2. pp. 195-199.
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