Ozone Generation by Surface Dielectric Barrier Discharge

Abstract

Surface dielectric barrier discharge (SDBD) is used in a variety of different applications; however, the ozone generated in the discharge can be toxic to people in the vicinity. In this paper, we study the SDBD (using generators with smooth-edge, serrated and thin-wire high-voltage electrodes) in terms of ozone generation. The electrical measurements and the time-resolved plasma imaging revealed differences in the discharge current, dissipated power and plasma morphology for the different types of SDBD generators and showed significant suppression of the streamer formation from the thin-wire electrode. We determined the amount of ozone produced by each generator and found that despite the observed differences in discharge between the generators, the ozone production yield and the maximum volumetric concentration of ozone for all three generators is a linear function of only one parameter—the discharge active power. We also found that the ozone production efficiency of 9.66 g/kWh is constant for all three generators. Our results show that SDBD generators can be safely used in the enclosed space if the SDBD discharge operates with relatively low active power (the SDBD generator working with the active power of 1.7 W did not exceed the ozone concentration of 0.1 ppm in the 60 m3 room).

Influence of ozone supply mode and aeration on photocatalytic ozonation of organic pollutants in wastewater using TiO2 and ZnO nanoparticles

“…Ozone is one of the free molecules formed due to the interaction of air or pure oxygen with plasma. Dielectric barrier discharge plasma is used in surface and volume structures [ 47 , [49] , [50] , [51] , [52] ].…”

Kinetic model of grating-like DBD fed with flowing humid air

“…The concentration of O 3 is almost inversely proportional to flow velocity, while the linear rising trend of O 3 as a function of discharge power is correctly predicted by the model. In fact, the linear dependence of O 3 on the discharge power at a relatively low power density is common in relevant reports, whether for volumetric DBD [23,41], SDBD [42,43], or corona discharge [44]. At higher power density levels, DBD would transit to the NO x dominant mode due to the faster decomposition of O 3 at higher temperatures and the consumption of atomic oxygen and O 3 by N and NO x [45,46].…”

Numerical simulation of streamer, pressure wave, and vortex induced by nanosecond pulsed surface dielectric barrier discharges

“…Surface dielectric barrier discharges (SDBDs), which involve one or multiple electrodes placed on a dielectric surface exposed to ambient air, can generate low-temperature plasma at atmospheric pressure. This technology is widely used in various fields, including air purification [1,2], ozone generators [3,4], airflow control [5][6][7][8][9][10][11][12], biomedicine, etc.…”