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TPS Process Adopted by Région Nouvelle-Aquitaine in Bordeaux for Shoe Recycling Scale-up

Implementation Date

January 1, 2020

By

Région Nouvelle-Aquitaine

City

Bordeaux

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Description

The Region Nouvelle-Aquitaine, has been testing the Solution since January 2020 and for a 2-year period for the delamination of shoes and the development of a scale-up process. This pilot project has been a collaborative effort between IDELAM and the French eco-organization Refashion, in charge of the collection of all shoes and textiles. The project “Rechauss” aims at determining the possibilities and feasibility of recycling shoes using IDELAM’s TPS Process.

Impact & Result

  • The delamination process allows for the recycling of up to 150,000 shoes annually, diverting significant waste from landfills.
  • Recycling shoes supports sustainable practices by reusing materials and reducing the need for virgin resources.
  • Developing a semi-industrial process could reduce costs associated with shoe waste disposal and material sourcing.

Solution Spotlight

Food packaging, clothes, shoes, solar panels, credit cards, skis are all complex and technical products composed of multiple layers of different materials. These materials are bound together to bring several required properties to the product (mechanical strength, oxygen barrier, hydrophobicity…). Taken separately, each material can often be recycled or reused, but the separation process can be costly or sometimes impossible, especially when shredding processes are involved. The TPS process is an efficient, fast and sturdy technology based on existing industrial supercritical processes. The solvents used, coupled with supercritical CO2, allows to delaminate the different layers of the wastes' materials (glues and bonds at the interface of materials are dissolved). The TPS process is a clean chemical process using mainly supercritical CO2 for the separation of multi-layer complex wastes and products, to enable their recycling. Non-recyclable wastes can then become fully recyclable. TPS Process gives a new life to multi-layer complex wastes.

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