Degradation of gaseous dioxin-like compounds with dielectric barrier discharges

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题名:	Degradation of gaseous dioxin-like compounds with dielectric barrier discharges
作者:	Hung,PC;Chang,SH;Chi,KH;Chang,MB
贡献者:	環境工程研究所
关键词:	DIBENZO-P-DIOXINS;COMPLETE SERIES REACTIONS;SOLID-WASTE INCINERATORS;FLUE-GAS STREAMS;RATE CONSTANTS;CATALYTIC DECOMPOSITION;HAZARDOUS-WASTE;OH RADICALS;REMOVAL;DESTRUCTION
日期:	2010
上传时间:	2012-03-27 17:03:36 (UTC+8)
出版者:	國立中央大學
摘要:	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 1 kJ increases from 1.47 to 3.06 ng-TEQ(WHO) as the water vapor is incorporated into the gas stream. (C) 2010 Elsevier B.V. All rights reserved.
關聯:	JOURNAL OF HAZARDOUS MATERIALS
显示于类别:	[環境工程研究所 ] 期刊論文

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