Traitement des matériaux lignocellulosiques en présence des composés halogénés (Risques toxiques des produits de combustion)

IRG/WP 95-50040-17

I Surina, M Slimak, S Vodny, A Périchaud, K Balog

From the point of view of the combustion products toxicity, the highest environmental hazard comes from the combustion of materials creating toxic products such as dioxins and dilbenzofurans. 95% of these are formed during incineration of different materials. The aromatics result essentially from the products of paper industry and from wood treatment. Formation of halogenated products during the combustion of materials on the wood basis (papers, cartons, packing materials, wood treated, et c.) in the presence of halogenated compounds (PVC, PVDC, halogenated salts) is very complex. From the point of view of the toxic products formation, there is necessary to examine not only the influence of the polymer structure and the structure of halogenated compounds, but also oxygen concentration, temperature, ions, radicals and another components present in the flame. For the formation of chlorinated dioxins and dibenzofurans is essential that the polymer is able to generate the compounds with benzoic character as the intermediates. The examples of such precursors can be phenol formaldehyde polycondensates, various types of wood products, some polyesters and epoxy resins, but also polyvinyl chloride and polyvinliden chloride, combustion products of whose are aromatic structures.


Keywords: COMBUSTION; TOXICITY; RECYCLING; WASTE MANAGEMENT; MODELLIN

Conference: 95-02-06/07 Cannes-Mandelieu, France


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