Towards sustainable feedstock

Material building blocks derived from YXY technology originate from commercially available bio-based feedstock, such as first-generation sugar and starch crops.

We are continuously working to further optimize our technology. This includes exploring the potential of using feedstock from second-generation non-food crops.

Recycling PEF bottles

Synvina has demonstrated that PEF can be recycled using the same processing steps as PET. Synvina supports the creation of a PEF recycling stream as early as possible, but the initial launch quantity of 50,000 tons per year is not expected to reach the critical mass needed for recycling in all areas of the world. Therefore, Synvina foresees the following stages:

PEF in rPET stream

During the transition period following the launch of PEF bottles, the amount of PEF as a proportion of the total PET stream will be relatively small. PEF bottles disposed in the PET recycling stream (recycled PET, rPET) can easily be sorted out if desired but can also be left in at certain concentrations. The outcome of preliminary tests show that PEF has very limited material effect on the transparency and mechanical properties of rPET, such as strength and impact resistance. We are currently working with brand owners and the recycling industry to further integrate PEF with PET recycling activities.

Please also read this press release on the integration of Synvina’s PEF in the circular economy.

PEF to PEF recycling

Once PEF is being produced in larger volumes, it is likely that it may become more economically attractive to recycle PEF separately. The potential of PEF recycling using existing PET recycling equipment may provide opportunities for PET recyclers to grow their business, and allow the creation of a separate stream sooner than many other polymers. We are currently working with brand owners and the recycling industry to assess the economic prerequisites for establishing a PEF to PEF recycling infrastructure.

Please find more information on the recyclability of PEF in this presentation.