Chlorinated Organic Compounds Decomposition in a Dielectric Barrier Discharge (original) (raw)
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Iraqi Journal of Physics
Recently, research has focused on non-thermal plasma (NTP) technologies as a way to remove volatile organic compounds from the air stream, due to its distinctive qualities, which include a quick reaction at room temperature. In this work, the properties of the plasma generated by the dielectric barrier discharge (DBD) system and by a glass insulator were studied. Plasma was generated at different voltages (3, 4, 6, 7, 8 kV ) with a fixed distance between the electrodes of 5 mm, and a constant argon gas flow rate of (2.5) I/min. DBD plasma emission spectra were recorded for each voltage. The Boltzmann plot method was used to calculate the electron temperature in the plasma ( ), and the Stark expansion method was used to calculate the electron density ( ). The decomposition of organic compounds (cyclohexane) was also studied using DBD plasma. The results showed that the potential difference between the two electrodes has a clear effect on the plasma parameters, as the temperature of t...
DBD non-thermal Plasma for decomposition of Volatile Organic Compounds
The most common air pollutants like Volatile Organic Compounds (VOCs) are the cause of different environmental degradation, causing secondary air pollution like Photochemical Smog, acid rain etc, which causes various health hazards. Therefore decomposition of VOCs is required. Abatement of VOCs can be done by non-plasma and plasma mediated methods. Plasma treatment is one of the effective methods for VOCs decomposition. In this review the decomposition as well as energy conversion is studied comparing both plasma and other conventional non-plasma methods. The decomposition process by Dielectric barrier Discharge (DBD) plasma assisted methods and its advantages are discussed. Decomposition efficiencies of DBD reactor depends on reactor size, applied potential, humidity; concentrations/flow rate of VOCs, pressure inside the system, gap between two electrodes and nature of different dielectric materials. Also the effect of various catalysts on VOCs decomposition is reviewed.