Renewable Diesel from Waste: Tire Pyrolysis Oil Co-Processing Enters the Mainstream


Renewable Diesel from Waste

Renewable diesel made from waste is scaling from pilot trials to certified commercial production, as refiners co-process tire pyrolysis oil alongside virgin feedstocks to capture renewable-fuel credits and lower carbon intensity.

Renewable diesel — hydrotreated vegetable oil, or HVO — has long been constrained by feedstock. Used cooking oil and animal fats are finite, and crop-based feedstocks draw criticism over land use. Waste-derived pyrolysis oil is changing that equation: by co-processing tire pyrolysis oil alongside conventional feedstocks, refiners can produce renewable diesel without competing for agricultural land.

The Co-Processing Pathway

Co-processing is the pragmatic route to scale. Rather than building dedicated hydrotreating capacity, a refinery injects pyrolysis oil into its existing diesel hydrotreater alongside crude fractions. The waste-derived oil is upgraded into specification-grade renewable diesel using infrastructure that already exists. The economics are compelling: no new plant, minimal capex, and immediate access to renewable-fuel credits.

This is precisely why refinery certification has become the industry’s key milestone. A refinery that certifies pyrolysis oil as an accepted co-processing feedstock unlocks a durable demand channel for the tire-pyrolysis sector — and for the recovered-fuel-oil market as a whole.

Feedstock Advantages

  • Waste-derived, not crop-derived — tire and plastic pyrolysis oil carries no food-vs-fuel conflict
  • Drop-in — processed through existing refinery hydrotreaters
  • Carbon benefit — displaces virgin fossil feedstock while diverting waste from landfill
  • Scalable — end-of-life tire and non-recycled plastic supply is abundant and growing under EPR rules

The Market Signal

Refinery certifications in Australia and Europe — including co-processing trials featuring Klean’s tire pyrolysis oil — mark the transition of renewable diesel from waste from technical demonstration to commercial reality. As renewable-fuel mandates tighten, the refineries that lock in waste-derived feedstock supply first will hold the advantage.

Learn More:

Unlock Renewable Diesel from Waste Feedstock

Tire pyrolysis oil is becoming a certified feedstock for renewable diesel, displacing virgin feedstock without new refining capacity.

Ready to secure waste-derived feedstock for renewable diesel?

Contact Klean Industries about tire pyrolysis oil supply and renewable diesel co-processing partnerships » GO.


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