Ultrafine particle emissions during the recycling of car tires containing carbon nanotubes

This project examines the occupational health and safety risks associated with nanoparticle emissions during the mechanical recycling of end-of-life car tires that contain single-wall carbon nanotubes (SWCNTs). The research focuses on determining whether, and in what quantities, nanofibers and other ultra-fine particles are released during end-of-life processes such as mechanical treatment and shredding of car tires. To achieve this, tire tread materials—both with and without SWCNTs—are mechanically processed into various sized output fractions. Particle emissions are monitored using a Scanning Mobility Particle Sizer (SMPS, 10–420 nm) and an Optical Particle Sizer (OPS, 0.3–10 µm). The results will include a description of the comminution process, an assessment of the theoretical recycling potential, and an evaluation of the measured aerosol emissions, along with a workplace assessment focusing on ultra-fine particles.