Bicycle tyre recycling
In contrast to car and truck tyres, worn-out bicycle tyres are almost exclusively disposed of in residual waste and most of them are sent for thermal recycling, which leads to a steadily increasing and irreversible loss of raw materials. Together with Schwalbe and the Technical University of Cologne, Pyrum Innovations AG is researching a sustainable solution to this problem. The aim of the cooperation project is to develop a raw material recycling concept for old bicycle tyres in the sense of a closed-loop economy.
In addition to production waste, a collection system designed by Schwalbe is to be used to feed used tyres directly from the end user to the pyrolysis process after shredding. The resulting gas can be used to generate electricity so that the entire process can be energy self-sufficient. The pyrolysis oil is intended to serve as a substitute for crude oil in the chemical industry. The recovered carbon black (rCB) is to be fed back into the manufacturing process for bicycle tyres. The Technical University of Cologne is investigating the incorporation of rCB into rubber compounds for inner tubes for bicycles. The prototypes produced in this way will then be examined by Schwalbe with regard to their product properties.
The team of Pyrum Innovations AG focuses on the development of the optimal process parameters for the pyrolytic recycling of bicycle tyres. Our aim is to provide high quality products for the best possible use in bicycle tyre production.
Project start: May 2021
Project duration: 2 years
Project funding: German Federal Ministry for Economic Affairs and Energy (BMWI): The Central Innovation Programme for SMEs (ZIM)
Funding code: KK5109701CM0