Ar等离子体射流处理乙醇水溶液的放电特性及灭菌效应

doi:10.19595/j.cnki.1000-6753.tces.201227

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Abstract Ethanol is a kind of commonly used disinfectant in medical treatment. Theoretically, doping ethanol into aqueous solution treated by Ar plasma jet can enhance the bactericidal effect. Through the inactivation experiment of Methicillin-resistant Staphylococcus aureus, it was found that the bactericidal effect of Ar jet plasma-activated water was increased by more than 5 orders of magnitude by doping 20% ethanol. Furthermore, when 0.2% N₂ was mixed into the working gas or 1% O₂ was added into the shield, the bactericidal effect can be improved by more than 5 orders of magnitude by doping 2% ethanol. At the same time, 2% ethanol doping can cause the overlapping of multiple discharge channels in the plasma, which may be due to Penning ionization of metastable Ar^* and ethanol gas molecules at the gas-liquid interface. Finally, the analysis of reactive species in liquid phase show that peracetic acid in ethanol solution activated by plasma may play a leading role in the sterilization process, and peroxynitrite and peracetic acid may synergistically enhance the bactericidal effect.

Key words： Ar plasma jet ethanol discharge characteristics bactericidal effect

Received: 17 September 2020

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TM89

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	Xia Wenjie
	Liu Dingxin

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Xia Wenjie,Liu Dingxin. Discharge Characteristics and Bactericidal Effect of Ar Plasma Jet Treating Ethanol Aqueous Solution[J]. Transactions of China Electrotechnical Society, 2021, 36(4): 765-776.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201227 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I4/765

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