Flame retardants in plastics can be compatible with recycling (mechanical recycling or feedstock recycling), with recovery of energy values and precious metals in integrated smelters, or with energy recovery in domestic waste incinerators, equipped with flue gas cleaning conform to EU standards.

This will depend on the type of plastic, the flame retardants used, the other additives present, the quality of the collected plastics (homogeneity, impurities… ), on the legal and technical constraints applicable, and of course on the economic costs of collection, sorting and recycling.

A number of practical studies have shown the compatibility of flame retardants with different recycling and energy valorisation routes.

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