Material Recycling of Polyolefin-Rich Plastic Fractions

The material recycling of plastic waste has still an enormous potential, even in countries like Austria or Germany, which have a highly developed waste treatment system. At the moment, approximately 2/3 of the utilized packaging plastics are treated thermally, i.e. as waste derived fuels, and only 1/3 are routed for material recycling.

In terms of an improved resource efficiency,and consistent with the actual European legislation, the material recycling of plastic has to be enhanced. The material recycling often fails because the plastic waste consists neither of monomaterial, nor is it clean enough. The development and the industrial implementation of material recycling processes gets continuously more attractive, particularly due to the increasing raw material prices of primary resources. In terms of plastic waste, thermal or thermochemical conversion process can be taken into account for material recycling, like for example pyrolysis, thermal or catalytic cracking. Ahomogeneous, and impurity-lean feedstock is the precondition for a stable operation of those conversion processes, and the production of usable products (petrochemical intermediates). Incontrast to mechanical recycling processes, thermochemical conversions need neither pure Feeds nor mono-materials.



Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle: Depotech 2014 (November 2014)
Seiten: 1
Preis: € 0,00
Autor: Markus Lehner
Wolfgang Hofer
 
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