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首页> 外文会议>2014 IEEE 18th International Conference on Dielectric Liquids >Enhancement of phenol degradation in aqueous solution by a hollow screw like electrode in gas-liquid DBD
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Enhancement of phenol degradation in aqueous solution by a hollow screw like electrode in gas-liquid DBD

机译：气液DBD中空心电极状电极促进水溶液中苯酚的降解

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摘要

Nonthermal plasma process of dielectric barrier discharge was successfully applied to experimental phenol degradation in a synthetic waste water aqueous solution. A typical coaxial reactor was disposed vertically but the surface of the high voltage internal electrode was shaped like a hollow screw. This electrode allowed to have a quasi-homogeneous plasma in all the length of the reactor and the inter-electrode space. With this configuration was possible to decrease the typical consumed electric power by the reactor and the liquid temperature at the end of the experience. A 90%Ar–10%O2, 80%Ar–20%O2 or 100%O2 gas mixture flowed across the gas gap and on the liquid surface. The applied electric power was in the range of 18–23 kV at 1.5 kHz. A 100%O2 gas mixture, experimental results showed an enhancement of removal efficiency beyond of 99% compared with a smooth surface cylindrical electrode after 1 hour of treatment. Also, this high efficiency was obtained with lower released power compared with that of smooth surface cylindrical electrode.
机译：介质阻挡放电的非热等离子体过程已成功地应用于合成废水水溶液中苯酚的实验降解。典型的同轴电抗器垂直放置，但高压内部电极的表面呈空心螺钉状。该电极允许在反应器的整个长度和电极间空间内具有准均质的等离子体。通过这种配置，有可能在实验结束时减少反应器的典型消耗电功率和液体温度。 90％Ar-10％O2、80％Ar-20％O2或100％O2的混合气体流过气隙并流到液面。在1.5 kHz时施加的功率范围为18-23 kV。实验结果表明，在100％O2气体混合物中，经过1小时的处理后，与光滑的圆柱形圆柱电极相比，去除效率提高了99％以上。而且，与光滑表面圆柱形电极相比，以较低的释放功率获得了这种高效率。

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