Degradation of gaseous dioxin-like compounds with dielectric barrier discharges

Pao Chen Hung, Shu Hao Chang, Kai Hsien Chi, Moo Been Chang

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Developing effective technologies to reduce dioxin emissions has become an important issue in the research and industrial fields. In this study, a dioxin-containing gas stream generating system was applied to evaluate the effectiveness of dielectric barrier discharge (DBD) plasma technology for the destruction of dioxin-like compounds. The results indicate that the destruction efficiencies of dioxin-like compounds achieved with DBD plasma strongly depend on the composition of the simulated gas stream. As the DBD plasma is operated with the simulated gas stream containing 20% water vapor, around 74% PCDDs and 89% PCDFs can be destroyed by DBD plasma. UV, electrons, and OH radicals are generated via the DBD plasma process and react with the dioxin-like compounds in the gas stream. Dechlorination via UV and electrons and decomposition via OH radicals occur at the same time and significantly increase the destruction efficiency of PCDD/Fs in the presence of oxygen and water vapor. Additionally, the total toxicity destruction of dioxin-like compounds with the input energy of 1kJ increases from 1.47 to 3.06ng-TEQWHO as the water vapor is incorporated into the gas stream.

Original languageEnglish
Pages (from-to)246-251
Number of pages6
JournalJournal of Hazardous Materials
Volume182
Issue number1-3
DOIs
StatePublished - Oct 2010

Keywords

  • DBD plasma
  • Dioxin-like PCBs
  • OH radical
  • PCDD/Fs

Fingerprint

Dive into the research topics of 'Degradation of gaseous dioxin-like compounds with dielectric barrier discharges'. Together they form a unique fingerprint.

Cite this