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Hyperspectral Imaging Applied to WEEE Plastic Recycling: A Methodological Approach

doi: 10.3390/su151411345
handle: 11573/1685562
In this study, the possibility of applying the hyperspectral imaging (HSI) technique in the Short-Wave InfraRed (SWIR) spectral range to characterize polymeric parts coming from Waste from Electric and Electronic Equipment (WEEE) is explored. Different case studies are presented referring to the identification of (i) plastic flakes inside a mixed waste stream coming from a recycling plant of monitors and flat screens, (ii) different polymers inside a mixed plastic waste stream coming from End-Of-Life (EOL) electronic device housings and trims, (iii) contaminants (i.e., metals) in a mix of shredded plastic particles coming from a recycling line of electrical cables, and (iv) brominated plastics in mixed streams constituted by small appliances (i.e., cathode-ray tube televisions and monitors). The application of chemometric techniques to hyperspectral data demonstrated the potentiality of this approach for systematic utilization for material characterization, quality control and sorting purposes. The experimental findings highlight the feasibility of employing this method due to its user-friendly nature and quick detection response. To increase and optimize WEEE valorization avoiding disposal in landfills or incineration, recycling-oriented characterization and/or quality control of the processed products are fundamental to identify and quantify substances to be recovered.
Environmental sciences, hyperspectral imaging; waste from electric and electronic equipment; plastic recycling; circular economy, Environmental effects of industries and plants, hyperspectral imaging, plastic recycling, circular economy, TJ807-830, GE1-350, TD194-195, waste from electric and electronic equipment, Renewable energy sources
Environmental sciences, hyperspectral imaging; waste from electric and electronic equipment; plastic recycling; circular economy, Environmental effects of industries and plants, hyperspectral imaging, plastic recycling, circular economy, TJ807-830, GE1-350, TD194-195, waste from electric and electronic equipment, Renewable energy sources
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