Meaning
Accounting protocols for the mathematical assignment of recycled content to specific polymer batches rely on mass balance principles rather than physical segregation. This chemical recycling attribution allows a manufacturer to document the proportion of waste derived feedstock within a complex production stream where recycled and virgin materials mix. The practice terminates at the point of sale where a certificate transfers the environmental attribute to the buyer.
Allocation Methodology
Distribution of recycled properties across a product portfolio follows strict certification standards like ISCC PLUS to ensure credibility. Because chemical recycling attribution occurs at the molecular level, the resulting resins are identical to fossil based grades in performance and regulatory compliance. Physical tracing remains impossible once the feedstock enters the cracker.
Chain Custody
Verification of the volume balance happens through third party audits of the input and output ratios. If a plant processes one hundred tonnes of pyrolysis oil, the chemical recycling attribution prevents the sale of more than the equivalent mass in circular polymers. This rigour protects the integrity of the market.
Attribute Transfer
Sustainable characteristics move through the supply chain as digital or paper credits. A moulder receives the chemical recycling attribution as part of the material specification to meet brand owner requirements for recycled content. These credits represent a verified displacement of fossil fuels.
