摘要
The dielectric barrier discharge-based non-thermal plasma technique is one of the most prominent techniques which give peerless results in controlling the concentration of NO_(X).However,when it comes to the automobile diesel engine,availability of high-voltage pulse power supply is the major constraint.In this study,battery-powered high-voltage pulse power supply for NO_(X) treatment has been proposed.Two types of electrodes:rod type and rod with helical spring type are studied for the treatment of exhaust.Cascaded plasma-adsorbent technique has also been used to enhance NO_(X) removal efficiency.Experiments have been conducted with two different gas flow rates,i.e.4 l and 6 l/min at laboratory level and have got significant results toward removal of NO_(X).When the exhaust has been treated with plasma alone,the reactor with rod-type electrode has shown 85%NO_(X) removal efficiency at a specific energy(SE)of 283 J/l with a flow rate of 4 l/min.When the plasma reactor is cascaded with the adsorbent reactor,both adsorbents:13x molecular sieve(MS13x)and activated alumina are able to remove 100%of NO_(X) with the proposed power supply at a lesser SE.
