Cite the paper
Ahmed, M. W., Choi, S., Yang, J., Suresh, R., & Lee, H. J. (2016). Diagnostics of Argon Injected Hydrogen Peroxide Added High Frequency Underwater Capillary Discharge. Mechanics, Materials Science & Engineering Vol.6, pp. 27-38. doi:10.13140/RG.2.2.16147.27684
Authors: Muhammad Waqar Ahmed, Sooseok Choi, Jong-Keun Yang, Rai Suresh, Heon Ju Lee
ABSTRACT.The effects of hydrogen peroxide addition and Argon injection on electrical and spectral characteristics of underwater capillary discharge were investigated. The flowing water discharge was created in a quartz tube (Φ = 4mm outer; Φ = 2mm inner; thickness 1mm) by applying high frequency (25 kHz) alternating current voltage (0-15kV) across the tungsten electrodes (Φ=0.5mm), in pin-pin electrode configuration, separated by a gap distance of 10 mm. The results of no hydrogen peroxide addition and no Argon gas injection were compared with addition of hydrogen peroxide and Argon injection for different values. The emission spectrum was taken to present the increase in concentration of •OH radicals with and without hydrogen peroxide addition under different argon injection rates. The results demonstrated that addition of hydrogen peroxide do not remarkably affected the conductivity of water, but its addition increased the yield rate of •OH radicals generated by plasma discharge. The addition of Argon generated bubbles and gas channels reduced the high power consumption required for inducing flowing water long gap discharge. The results showed large concentration of •OH radicals due to hydrogen peroxide addition, less required input power for generating flowing water discharge by using high frequency input voltage and due to Argon injection.
Keywords: high frequency plasma discharge, hydrogen peroxide, emission spectroscopy, OH radicals
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