Recovery of plastic from mixed waste boosts recycling rates but affects quality

Recovering plastic packaging from mixed domestic waste and from household-sorted streams increases recycling volumes but introduces contamination and safety risks, according to research published in Nature on June 3, 2026. The study highlights that while these methods boost the quantity of recycled plastic, the presence of contaminants such as food residue, paper, and other non-plastic materials can compromise the quality and safety of the final recycled product. This contamination can limit the applications for recycled plastics, potentially leading to downcycling rather than true circularity. The research emphasizes that policies designed to enhance plastic recovery from mixed waste streams must incorporate stringent quality control measures. Furthermore, significant investment in advanced purification technologies is necessary to effectively remove contaminants and ensure that recycled plastics meet safety and performance standards for reuse. Without these safeguards, the environmental benefits of increased recycling volumes may be diminished by the production of lower-quality or unsafe materials.