Degradation of Trichloroethylene in a Rod-in-Tube Pulsed Dielectric Barrier Discharge Reactor

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Degradation of Trichloroethylene in a Rod-in-Tube Pulsed Dielectric Barrier Discharge Reactor

更新时间：2025-07-09

- Degradation of Trichloroethylene in a Rod-in-Tube Pulsed Dielectric Barrier Discharge Reactor
- Vol. 46, Issue 9, Pages: 96-101(2012)
- 作者机构：
  
  西安交通大学环境科学与工程系,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： X5
- Online First：10 September 2012，
  
  Published：2012
- 稿件说明：
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Degradation of Trichloroethylene in a Rod-in-Tube Pulsed Dielectric Barrier Discharge Reactor[J]. 2012, 46(9): 96-101.
DOI：

Degradation of Trichloroethylene in a Rod-in-Tube Pulsed Dielectric Barrier Discharge Reactor[J]. 2012, 46(9): 96-101. DOI：

摘要

研究了不同操作条件下脉冲介质阻挡放电等离子体对三氯乙烯的降解效果

通过红外分析探讨了降解的反应历程.结果表明:当载气为N

时

脉冲介质通过阻挡放电等离子体可实现三氯乙烯的有效降解

降解率随放电参数及气体流量的变化而变化

在保证体系能量效率最大的基础上可获得三氯乙烯降解的最佳处理条件

即输入电压25 V、脉冲频率500 Hz、脉冲占空比50%、放电间隙5 mm、气体流量300 mL/min; 当载气中含O

时

三氯乙烯的降解率随输入电压的变化而变化

即输入电压小于25 V时

三氯乙烯降解率随O

的增加而提高

输入电压大于25 V时

三氯乙烯降解率随O

的增加而下降.三氯乙烯降解过程中会产生CHCl

COCl 、CCl

—CN或ClCH

终产物中除含有HCl、CO

和CO外

还含有COCl

Abstract

The performance of a laboratory-scale pulsed dielectric barrier discharge(DBD)reactor for trichloroethylene(TCE)degradation was studied. The reaction process of degradation was discussed by the infrared spectroscopy analysis. The experimental results show that when the background gas was pure N

the pulsed DBD could effectively destroy TCE molecules

and the removal efficiency clearly depended on the discharge parameters and gas flux. From the maximum efficiency of energy utilization of the whole system

the process parameters for optimum removal of TCE were obtained

i.e.

25 V in the input voltage

500 Hz in the pulse frequency

50% in the pulse duty ratio

300 mL/min in the gas flux

and 5

mm in the discharge gap width. When the carrier gas included O

the removal efficiency of TCE increased with an increase in the O

content at low input voltage(

25 V)but decreased with an increase in the O

content at high input voltage(>25 V). CHCl

COCl

CCl

—CN or ClCH

were produced during the degradation of TCE

and the final products contained COCl

as well as HCl

and CO.

关键词

Keywords

references

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