Decontamination of 2-Chloroethyl Ethyl Sulfide by Pulsed Corona Plasma

LI Zhanguo(李战国); HU Zhen(胡真); CAO Peng(曹鹏); ZHAO Hongjie(赵红杰)

doi:10.1088/1009-0630/16/11/10

Plasma Science and Technology > 2014 > 16(11): 1054-1058. > DOI: 10.1088/1009-0630/16/11/10

LI Zhanguo(李战国), HU Zhen(胡真), CAO Peng(曹鹏), ZHAO Hongjie(赵红杰). Decontamination of 2-Chloroethyl Ethyl Sulfide by Pulsed Corona Plasma[J]. Plasma Science and Technology, 2014, 16(11): 1054-1058. DOI: 10.1088/1009-0630/16/11/10

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Decontamination of 2-Chloroethyl Ethyl Sulfide by Pulsed Corona Plasma

State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China

Funds: supported by State Key Laboratory of NBC Protection for Civilian, China

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Received Date: October 31, 2013

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Abstract

Abstract

Decontamination of 2-chloroethyl ethyl sulfide (2-CEES, CH ₃ CH₂ SCH ₂ CH ₂ Cl) by pulsed corona plasma was investigated. The results show that 212.6 mg/m ³ of 2-CEES, with the gas flow rate of 2 m³ /h, can be decontaminated to 0.09 mg/m 3 . According to the variation of the inlet and outlet concentration of 2-CEES vapor with retention time, it is found that the reaction of 2-CEES in a pulsed corona plasma system follows the first order reaction, with the reaction rate constant of 0.463 s⁻¹ . The decontamination mechanism is discussed based on an analysis of the dissociation energy of chemical bonds and decontamination products. The C-S bond adjacent to the Cl atom will be destroyed firstly to form CH ₃ CH ₂ S· and ·CH 2 CH 2 Cl radicals. CH 3 CH 2 S· can be decomposed to ·C ₂ H ₅ and ·S. ·S can be oxidized to SO ₂, while ·C 2 H 5 can be finally oxidized to CO₂ and H₂ O. The C-Cl bond in the ·CH 2 CH 2 Cl radical can be destroyed to form ·CH ₂ CH ₂ · and ·Cl, which can be mineralized to CO₂, H ₂ O and HCl. The H atom in the ·CH ₂ CH₂ Cl radical can also be substituted by ·Cl to form CHCl ₂-CHCl ₂.
- pulsed corona plasma,
- decontamination,
- 2-chloroethyl ethyl sulfide (2-CEES)

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References (25)

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