Process and technology

Our feedstock

The SYNOVA technology uses feedstock that contains plastic waste, but also may contain water, inert materials, and biogenic residues. This flexibility significantly reduces the feedstock sorting requirements while increasing the sorting yield.

Feedstock operating window

SYNOVA’s technology can handle a wide range of feedstock ranging from 100% biogenic material to 100% plastic material. The “sweet spot” for our waste-to-olefins and waste-to-BTX processes is considered between 50% and 80% plastics. With this feedstock, high yields of chemicals can be produced, while enjoying the benefit of cheap feedstock and low CO2 footprint. Together with our clients we will define the actual feedstock window that fits a specific location.



Plastics produce the highest amounts of chemicals. Plastic therefore is the desired ingredient of a feedstock for SYNOVA’s plastic-recycling process. Although poly-olefins produce more high value chemicals than e.g. PET, our feedstock may contain all sorts of plastics that occur in waste. Note that feedstock containing e.g. PET generally will be cheaper and can be produced with lower plastic losses in the sorting process than feedstock that must have high content of poly-olefins.

Biogenic material

Biogenic material such as food residues and paper is not a contaminant in our plastic waste cracking process. Instead, it provides valuable components (mainly ethylene and benzene) and improves the CO2 footprint of our solutions. Additionally, allowing biogenic residues in the feedstock eases the sorting process needed to produce the feedstock from Municipal Solid Waste (MSW) for example. This results in significant economic benefits. The biogenic content compensates for the inevitable losses in the recycling of plastics, thus enabling full circularity. Biomass “fills the gap”!


Our fluidized bed technology accepts inert materials like glass and stones that will leave the system as coarse ash. But also inert materials like fillers, aluminum layers, and attached dirt can be accepted. These will leave the process as ash.


Besides the plastics and biogenic material and impurities, the feedstock normally also contains water. Water in the feedstock is no issue, but it increases the amount of energy needed for the cracker. Ideally, the feedstock contains 10-20% water. The evaporated water will be condensed downstream, together with the steam added to MILENA.

Feedstock example

DKR-350 can be used as feedstock for the SYNOVA solutions to produce olefins and BTX. It is a residue from sorting plants and a mix of different ingredients.

In conclusion

Our feedstock does not have to be very clean and pure and therefore is relatively cheap and readily available. The biogenic content allows us to produce better yields with lower CO2 footprint and better plastic-to-plastic circularity. This gives our processes a unique position in the plastic recycling world where recycling seems to become a synonym for extensive sorting, cleaning and washing.

Ready to transform waste into opportunity?

Interested in learning more about SYNOVA? We’d love to share more information with you. Contact us today to discover how we’re shaping a more sustainable tomorrow through advanced plastic recycling solutions.