How introduction of deposit-refund system (DRS) changes recycling of non-drinking bottle PET wastes
Under the era of circular economy, the deposit-refund system (DRS) for e.g. polyethylene terephthalate (PET) is thought to be a good choice to achieve a more structured plastic recycling. The present research has the aim to make a comprehensive description and a practical guideline in order to evalu...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology and Economics
2023-11-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0012658&mi=cd |
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| Summary: | Under
the era of circular economy, the deposit-refund system (DRS) for e.g. polyethylene
terephthalate (PET) is thought to be a good choice to achieve a more structured
plastic recycling. The present research has the aim to make a comprehensive description
and a practical guideline in order to evaluate how collection and separation
system influence the quality and efficiency of mechanical recycling of PET. The
DRS has been symbolized by manually collected bottles with (BCL) and without
(B) caps and labels. Samples have been given from the selective income (SI) and
the sorting residue (SR) of a manual selective waste sorting plant and PET
fraction of refuse derived fuel (RDF). Based on preliminary qualification results
such as melt flow indices (MFI), PET bottles are worth selecting into the main
colours like water clear, blue, and all the others together, referred to as
PET-A, PET-B, and PET-D fractions of the sorting plant. The SR seemed to be a beneficial
raw material for PET recycling as both mechanical and rheological properties
were proper enough. PET separated from the Mechanical Biological Treatment
(MBT) plant as RDF showed the worst processing and mechanical properties, but
both can be improved with deeper precleaning. X-ray tomography (CT) scans have
shown a correlation between the source of waste and the gas void structure
which influence the macroscopic mechanical properties. |
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| ISSN: | 1788-618X |