Double and single dielectric barrier discharge for toxic gas removal

摘要

Non-thermal plasma technologies are an interesting complement or alternative for some conventional systems used for gas pollution control, since they are able to remove simultaneously several gas pollutants, with a quite good efficiency at relatively low-energy consumption. In this work, single and double dielectric barrier discharges were used to remove nitric oxides from a mixture of air and water vapor. A chemical model was developed to obtain a toxic gas removal mechanism and to observe the behavior of the species in the plasma. The influence of water vapor addition on the toxic gases removal efficiency is also investigated. Results of numerical simulation demonstrated a good agreement with experimental data of the removal process achieving more than 96percent of efficiency removal of toxic gas studied.