Scientists from Nanyang Technological University, Singapore, have developed a new method to recycle mixed plastic packaging without using harmful chemical solvents [1, 2].
This development targets one of the most difficult waste streams in the world. By removing the need for toxic solvents, the process reduces the environmental impact typically associated with chemical recycling while recovering material that can be used again [1, 2].
Traditional recycling often struggles with mixed packaging because different types of plastics are fused together. This makes separation difficult and often requires aggressive chemical treatments to break the materials apart. The new approach from NTU Singapore allows for the recovery of reusable plastics from these mixed sources [1, 2].
The research team focused on creating a cleaner alternative to existing industrial processes. The goal was to unlock the value of mixed plastic waste while avoiding the contamination and pollution risks linked to chemical solvents [1, 2].
While some reports on catalytic processes in pilot plants describe the conversion of mixed plastic waste into oil, the NTU Singapore method specifically focuses on unlocking reusable plastics from packaging [1, 2]. This distinction highlights a shift toward circularity, where the end product remains a plastic polymer rather than a fuel source.
The team developed the technique in Singapore to address the growing challenge of packaging waste. By streamlining the recovery of reusable materials, the method provides a potential pathway for scaling the recycling of complex multi-layer plastics that were previously considered non-recyclable [1, 2].
“NTU Singapore researchers have created a solvent‑free recycling technique.”
The shift toward solvent-free recycling addresses a critical gap in the circular economy. Most current recycling infrastructure cannot handle mixed-material packaging, leading to high landfill rates. If this method can be scaled, it reduces the reliance on petrochemicals for new plastic production and eliminates the hazardous byproduct streams associated with traditional chemical recycling.
