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How circular is PET?

New report: PET, the most recycled and recyclable plastic, is far from circular
A huge pile of discarded plastic bottles

New research shows that most polyethylene terephthalate (PET) plastic recovered from bottles in Europe does not make its way back into new PET bottles.

The report, produced for Zero Waste Europe by sustainability consultancy Eunomia Research & Consulting, concludes that significant improvements in PET design, collection and recycling will be needed to improve circularity.

Recovering PET

Published today (16 Feb), the ‘How circular is PET?’ report presents a picture of the true state of circularity of PET in bottles in Europe – including how many bottles are collected for recycling, how many are actually recycled and how many new bottles contain recycled PET.
The research reveals that most recycled PET recovered from bottles in Europe is being used in other lower grade PET applications such as trays, film, strapping or fibres.

New bottles placed on the market contain an average of just 17% recycled PET, despite a recycling rate of around 50%.

Recycled content for all PET product streams – including single-use plastic trays, textile fibres, films and strapping – is sourced from bottles, due to very low levels of recycling for non-bottle PET applications.

Of the 1.8 million tonnes of recycled flake output from bottles, only 31% is made into pellets for bottles, with the rest (69%) going into other PET products.

‘This study shows that PET is not very circular today and will remain as such in the future unless substantial policy changes are introduced and technical and economical barriers are removed. We might speculate that, if the most recyclable and recycled type of plastic struggles to meet the challenges of becoming more circular, the other types of plastic may face even greater challenges. Consequently, the most effective way to increase the circularity of this material is not only through recycling, but through its use on durable applications instead of disposable ones.’
Policy officer on Toxic-Free Consumption & Production at Zero Waste Europe

Recycling and Deposit Return Systems

The picture for PET bottle recycling varies across the continent, with some countries achieving high recycling rates mainly due to the presence of Deposit Return Systems (DRS), while others have lower recycling rates when only employing separate collection systems.
Key EU policy changes and commitments from large brands show an ambition to increase PET circularity.

However, the report shows that higher levels of recycled content may be achievable with the implementation of enhanced collections such as Deposit Return Systems (DRS), moving from coloured and opaque bottles to clear bottles and prioritising bottle-to-bottle recycling to prevent a cascade to other non-bottle PET applications.

Recycled content for bottles

In addition to mechanical recycling, there is potential for chemical depolymerisation technologies to contribute to overall PET circularity – provided they reach full maturity and their full impact is assessed.
With those changes, it may be possible to reach an upper limit between 61% and 75% recycled content in bottles by 2030; but, under current market conditions, the figure could be as low as a minimum policy-driven target of 30%.

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