Enhancement of phenol degradation in aqueous solution by a hollow screw like electrode in gas-liquid DBD

2014 IEEE 18th International Conference on Dielectric Liquids (ICDL) Pub Date : 2014-09-08 DOI:10.1109/ICDL.2014.6893168

A. Mercado-Cabrera, R. López-Callejas, R. Peña-Eguiluz, R. Valencia-Alvarado, B. Rodríguez-Méndez, A. Munoz-Castro, B. Jaramillo-Sierra, A. de la Piedad-Beneitez

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引用次数: 1

Abstract

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.

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空心螺杆电极增强气液DBD对水溶液中苯酚的降解

将介质阻挡放电非热等离子体工艺成功地应用于合成废水水溶液中苯酚的降解实验。典型的同轴电抗器是垂直布置的，高压内电极表面呈空心螺旋状。该电极允许在反应器的所有长度和电极间空间具有准均匀等离子体。通过这种配置，可以减少反应器消耗的典型电力和体验结束时的液体温度。90%Ar-10%O2, 80%Ar-20%O2或100%O2的气体混合物流过气隙和液体表面。施加的功率范围为18-23千伏，频率为1.5千赫。实验结果表明，在100%O2气体混合物中，经过1小时的处理，与光滑表面圆柱形电极相比，去除效率提高了99%以上。与光滑表面圆柱形电极相比，该电极在释放功率较低的情况下具有较高的效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE 18th International Conference on Dielectric Liquids (ICDL)

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