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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v7.i3.130
pages 391-406

ON-LINE QUALIFICATION OF CHLORINATED DESORBED SPECIES RESULTING FROM POLLUTED ASHES BY LOW PRESSURE PLASMA PROCESS

P. Rousseau
Laboratoire de Genie des Precedes Plasmas et Traitement de Surfaces, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France
S. Cavadias
Laboratoire Genie Precedes Plasmas - ENSCP 11, rue Pierre et Marie Curie - 75005 Paris- France
Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France

ABSTRAKT

The incineration of Municipal Solid Wastes generates toxic products like fly ashes containing heavy metals and organochlorinated compounds. The presence of these materials in the fly ashes makes their treatment and valorization very difficult. In this work we present a process for the real time desorption and concentration measurement of chlorinated compounds and heavy metals. To this end a radio frequency (13.56 MHz) low pressure plasma (<500 Pa) process has been developed. The chemical analysis of exhaust gases for the identification of chlorinated compounds has been performed by on-line mass spectrometry. The heavy metals have been identified by optical emission spectroscopy. This study cleary shows that the low pressure plasma enhances the desorption of chlorine compounds. Furthermore, the hydrogen addition leads to a decrease of the reactive chlorine species and simultaneously, an increase of HCl.


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