Concentration of hydrogen peroxide generated by gliding arc discharge and inactivation of E. coli in water

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• 作者：Hyoung-Sup Kim^a ; Kamau C. Wright^a ; In-Whan Hwang^b ; Dong-Hwan Lee^b ; Alexander Rabinovich^a ; Alexander Fridman^a ; Y.I. Cho^a ; ^{choyi@drexel.edu}
• 关键词：Hydrogen peroxide ; Gliding arc discharge ; E. coli ; Bacterial inactivation
• 刊名：International Communications in Heat and Mass Transfer
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：42
• 期：Complete
• 页码：5-10
• 全文大小：806 K

文摘

The ability of a GA discharge to produce hydrogen peroxide (H₂O₂), a potent oxidizer, was investigated to evaluate the optimum operational condition of the GA discharge for bacterial inactivation. The concentration of H₂O₂ was measured in liquid phase, and its effective residual time was evaluated in a 200-W GA discharge system at different air and water flow rates. The concentration of H₂O₂ was the highest at the least water flow rate. In addition, a 5-log reduction in the colony forming unit (cfu) number of E. coli was observed at a H₂O₂ concentration of 100 mg/L in water.