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Progress in Plasma Processing of Materials, 1999

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

DIOXINS DESTRUCTION IN A FLYASH PLASMA TREATMENT

M.F. Renou-Gonnord
Laboratoire des Mecanismes Reactionnels - CNRS URA 1307 Ecole Polytechnique - 91128 Palaiseau Cedex - France

K. Coulibaly
Laboratoire de Genie des Procedes Plasmas et Traitement de Surfaces Universite Pierre et Marie Curie - ENSCP 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 - France

F. Genet
Laboratoire de Genie des Procedes Plasmas et Traitement de Surfaces Universite Pierre et Marie Curie - ENSCP 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 - France

Abstract

In most thermal waste treatment processes, the environmental concern lies in toxic metals and dioxin emission. Regulations have been issued to reduce the amount of dioxin emitted through gaseous effluents. Dioxins have also been found in fly ash and at a much lower extend in bottom ash. In this work the behavior of dioxins is considered in the context of a fly ash plasma treatment developed in order to render the flyash inert and to reduce its volume. The composition of the flyash has been measured and the chemical balance on chlorine has been established.