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 - coordinatorInstitute 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 IPPJ. Schmidt, V. Prukner, M. Člupek, V. Babický

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.

Results:

De Baerdemaeker F., Šimek M., Leys C., Verstraete W.: Pump effect of a capillary discharge in electrically conductive liquids. Plasma Chemistry and Plasma Processing 27 [4] (2007) 473-485. [ Abstract ] [ Link ]

De Baerdemaeker F., Šimek M., Leys C.: Hydrogen peroxide production in capillary underwater discharges. Journal of Physics D-Applied Physics 40 [9] (2007) 2801-2809. [ Abstract ]

De Baerdemaeker F., Šimek M., Člupek M., Lukeš P., Leys C.: Hydrogen peroxide production in capillary underwater discharges. Czechoslovak Journal of Physics 56 [suppl. B] (2006) 1132-1139. [ Abstract ]
[Symposium on Plasma Physics and Technology/22nd./. Praha, 26.6.2006-29.6.2006]

De Baerdemaeker F., Šimek M., Schmidt J., Leys C.: Time-resolved Optical and Electrical Characteristics of Capillary Underwater Discharges. Czechoslovak Journal of Physics 56 [suppl. B] (2006) 624-631. [ Abstract ]
[Symposium on Plasma Physics and Technology/22nd./. Praha, 26.6.2006-29.6.2006]

DeBenedictis S., Ambrico P. F., Dilecce G., Šimek M.: OODR-LIF experiments on N2(A3 u+) in volume and in surface atmospheric pressure DBDs. Bulletin of the American Physical Society 51 [5] (2006) 24. [ Abstract ]
[Annual Gaseous Electronic Conference/59nd./. Columbus,Ohio, USA, 10.10.2006-13.10.2006]

Šimek M., Schmidt J., Pekárek S., Khun J.: Optical and electrical characteristics of hollow needle to plate atmospheric pressure discharge in nitrogen. Bulletin of the American Physical Society 51 [5] (2006) 27. [ Abstract ]
[Annual Gaseous Electronic Conference/59nd./. Columbus,Ohio, USA, 10.10.2006-13.10.2006]

Šimek M.: Optical Diagnostics of Plasmas used for Gaseous Pollutant Control. The First Central European Symposium on Plasma Chemistry. Gdansk : Polish Academy of Sciences , Gdansk,Poland, 2006 - (Mizeraczyk, J.; Dors, M.) O5.1-O5.5. [ Abstract ]
[The First Central European Symposium on Plasma Chemistry (CESPC). Gdansk, Poland (PL), 28.05.2006-31.05.2006]

Pekárek S., Šimek M., Khun J.: De-NOx Efficiency of Positive/Negative DC Corona Discharge: a Comparative Study. Gas Discharges and their Applications - GD 2006. Xi'an : Xi'an Jiaotong University, 2006 - (Wang, J.) s. 533-536. ISBN 0-9539105-3-9. - (2). [ Abstract ]
[International Conference on Gas Discharges and their Applications - GD 2006 /16./. Xi'an (CN), 11.09.2006-15.09.2006]

Šimek M., Člupek M., Babický V., Šunka P.: Production of reactive species by atmospheric pressure streamers in N2-O2 mixtures. Pure and Applied Chemistry 78 [6] (2006) 1213-1225. [ Abstract ]

Khun J., Šimek M., Pekárek S., Schmidt J.: Dynamic characteristics of positive hollow needle to plate atmospheric pressure discharge. Czechoslovak Journal of Physics 56 [suppl.B] (2006) 830-836. [ Abstract ]
[Symposium on Plasma Physics and Technology/22nd./. Praha, 26.6.2006-29.6.2006]

Šimek M., Pekárek S.: Mechanism of gas flow enhanced DC corona discharge. Proceedings of 2nd International Workshop on Cold Atmaspheric Pressure Plasmas: Sources and Applications. Gent, 2005 - (Leys, C.) s. 206-209. ISBN 908086692X. [ Abstract ]
[International Workshop on Cold Atmospheric Pressure Plasmas: Sources and Applications/2nd./. Bruges (BE), 30.08.2005-02.09.2005]

Pekárek S., Šimek M.: Effect of N2-NO mixture composition on basic electrical characteristics of hollow needle to plate DC atmospheric pressure discharge. Proceedings of the XXVII International Conference on Phenomena in Ionized Gases. Eidhoven : Eidhoven University of Technology, 2005 - (Veldhuisen van, E.) s. 1-3. [ Abstract ]
[International Conference on Phenomena in Ionised Gases/27th./. Eidhoven (NL), 17.07.2005-22.07.2005]

Pekárek S., Šimek M.: Relationship between rotational temperature and energy density in atmospheric pressure hollow-needle to plate electrical discharge. Bulletin of the American Physical Society 49 [5] (2004) 66. [ Abstract ]
[Annual Gaseous Electronics Conference /57./. Bunratty, 26.09.2004-29.09.2004]

Šimek M.: Determination of OH(X2ç) Species Produced by Pulsed Positive Nitrogen Streamers at Atmospheric Pressure. Proceedings of the XV International Conference on Gas Discharges and their Applications. Toulouse : Local Organizing Committe GD2004, 2004 - (Bordage, M.; Gleizes, A.; Gonzales, J.) s. 853-856. [ Abstract ]
[International Conference on Gas Discharges and their Applications - GD 2004 /15./. Toulouse (FR), 05.09.2004-10.09.2004]

Šimek M.: Spectroscopic methods for N2(A) metastable detection in atmospheric pressure discharges. Conference Proceedings, ESCAMPIG 17, 2004. Constanta : Ovidius University Constanta, 2004 - (Ciupina, V.; Musa, G.; Vladoiu, R.) s. 21-22. [ Abstract ]
[European Conference on Atomic and Molecular Physics of Ionized Gases/17th./. Constanta (RO), 01.09.2004-05.09.2004]

Šimek M.: Streamer-induced emission and spectrometric determination of basic plasma parameters. Czechoslovak Journal of Physics 54 [suppl.C] (2004) C778-C783. [ Abstract ]
[Symposium on Plasma Physics and Technology /21./. Praha, 14.06.2004-17.06.2004]

Pekárek S., Šimek M.: Optical diagnostics of the hollow needle to plate electrical discharge in air at atmospheric pressure. Czechoslovak Journal of Physics 54 [suppl. C] (2004) C728-C734. [ Abstract ]
[Symposium on Plasma Physics and Technology /21./. Praha, 14.06.2004-17.06.2004]