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Progress in Plasma Processing of Materials, 1999

ISBN:
1-56700-126-2 (Print)

DEPOLLUTION PROCESSES CORRELATED TO TEMPERATURE CONTROL IN NON EQUILIBRIUM PLASMAS. APPLICATION TO THE REMOVAL OF VOLATILE ORGANIC COMPOUNDS

E. Odic
Equipe Decharges Electriques et Environnement, Laboratoire de Physique des Gaz et des Plasmas, Universite Paris-Sud / CNRS Supelec, plateau de Moulon, 91192 Gif-sur-Yvette Cedex, FRANCE.

L. Parissi
Laboratoire de Physique des Gaz et des Plasmas- Universite Paris Sud - CNRS Equipe Decharges Electriques et Environnement - SUPELEC 91192 Gif-sur-Yvette Cedex - France

A. Goldman
Equipe Decharges Electriques et Environnement, Laboratoire de Physique des Gaz et des Plasmas, UMR 8578 du CNRS, Supelec, 91192 Gif-sur-Yvette Cedex, France

M. Goldman
Equipe Decharges Electriques et Environnement, Laboratoire de Physique des Gaz et des Plasmas, UMR 8578 du CNRS, Supelec, 91192 Gif-sur-Yvette Cedex, France

Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France

Abstract

Investigations were carried out on a point-to-plane air gap under AC voltages, with a dielectric barrier covering the plane electrode in order to avoid arcing, while generating filamentary discharge channels with larger currents than in usual streamers and producing non equilibrium plasmas warmer (1000 and 2500 K) than conventional cold plasmas.
Due to this large temperature range, such discharges are of practical interest for various gas depollution purposes including the removal from flue gas of volatile organic compounds (VOC), with a good compromise between a high conversion rate of the target molecule and a minimized production of undesirable species such as nitrogen oxides.