Experimentelle Konzepte zur Gewinnung von Polyolefinen aus gemischten Siedlungs- und Gewerbeabfällen für das mechanische und chemische Recycling

Translated title of the contribution: Experimental concepts for the recovery of polyolefins from mixed municipal and commercial waste for mechanical and chemical recycling

Thomas Haider

Research output: ThesisMaster's Thesis

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Abstract

The recycling of plastics is a major technical challenge and places high demands on the respective processes. Mechanical and chemical recycling are both processes that have their strengths in different areas and are therefore relevant for plastics recycling. In this work, different approaches for the recovery of polyolefins were pursued, whereby the focus here was on the already available plants and mobile machines of various manufacturers as well as their suitability for the problem mentioned. In recent years, near-infrared (NIR) sorting has emerged as the most promising technology for sorting waste. In order for NIR sorting to work, it requires a defined grain size of the material to be fed. For this reason, attention was paid to the different shredder variants in the course of the concept development and the subsequent trials. Another important condition for the recycling process was the separation of the plastic fraction into 2D and 3D material. It was shown that a basic separation of the waste is possible using Komptech Hurrikan. Further tests with a NIR sorter showed that PO is discharged in a ratio of 1:2 (2D:3D). It could be seen that a large proportion of the 2D fraction (foils) could not be discharged and thus a not inconsiderable proportion of recycling potential remains in the residual stream. In summary, a possible concept for the recovery of polyolefins was presented on basis the results, which should indicate approaches for further investigations.
Translated title of the contributionExperimental concepts for the recovery of polyolefins from mixed municipal and commercial waste for mechanical and chemical recycling
Original languageGerman
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Pomberger, Roland, Supervisor (internal)
  • Viczek, Sandra, Co-Supervisor (internal)
Award date31 Mar 2023
DOIs
Publication statusPublished - 2023

Bibliographical note

no embargo

Keywords

  • polyolefin
  • municipal and commercial waste
  • mechanical recycling
  • chemical recycling
  • plastic recycling

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