Experimental and modelling studies leading ot onhanced generation and de-NOx processes in non-equilibrium, atmopsheric-pressure discharges Project ID: IAA1043403 Provider: Grant Agency of the Academy of Sciences Period: Jan 01, 2004 - Dec 31, 2006 Recipient - coordinator Institute of Plasma Physics, Czech Academy of Sciences, Prague Principal Investigator: RNDr. Milan Šimek Co-recepient(s) / PI(s): Faculty of Electrical Engineering, CTU in Prague -- Doc. Ing. Stanislav Pekárek, CSc. Co-investigators from IPP , , , Aims of the project: The project is based upon recent experimental research performed by the Dept. of Pulse Plasma systems group at IPP Prague and the Dept. of Physics at FEE CTU. It will provide a comprehensive scientific research programme into the mechanisms for the formation of ozone and de-NOx processes in various streamer gas discharges. In particular we intend:1. To study the basic physical and chemical processes that limit (a) the efficiency of plasmachemical ozone synthesis and )b) the efficiency of de-NOx processes in a streamer discharge. 2. To optimise (a) the electrode geometry of existing reactors, (b) the dissipation of electrical energy and (c) the gas-flow dynamics to improve the rate and concentration of ozone production and the efficiency of de-NOx processes. 3. To develop a model of the streamer-induced chemistry with refined data inputs from the experiments described above. Progress/Results: We determined optimal operational regimes for O3 generation and NO conversion for streamer discharges in N2-O2-NO mixtures at atmospheric pressure for: a) DC corona in needle-to-plate geometry, b) AC surface barrier discharge and c) pulsed corona.