Sustainable Textile Recycling: Researchers Develop New Method to Improve Clothing Recycling

Strategic Insights -

Researchers at the University of Huddersfield have made a groundbreaking discovery in the field of sustainability, developing a new method to improve textile-to-textile recycling. The study, published in the journal Environmental Challenges, found that a biodegradable solvent called Cyrene can effectively extract dyes from polyester fabrics without the use of harsh chemicals. This breakthrough has the potential to significantly enhance the recyclability of polyester textiles, contributing to a more circular economy and reducing environmental impact.

Key Takeaways:

  • The study found that polyester is the most widely used textile fibre, accounting for around 54% of global fibre production.
  • Less than 1% of clothing is recycled into new textiles due to dyes that reduce the quality of recovered fibres.
  • The researchers developed a sustainable dye extraction method using Cyrene, a biodegradable solvent, under mild conditions.
  • The optimal conditions for removing two anthraquinone disperse dyes from polyester fabrics were a 75:25 Cyrene-to-water ratio, 30 minutes of treatment, and 10% fabric loading.
  • Dye removal ranged from 70 to 96% for low-temperature dyed fabrics and 70-75% for high-temperature dyed fabrics.
  • The results support a circular economy by enhancing fibre quality and reducing environmental impact.
  • The study was funded by the Biotechnology And Biological Sciences Research Council, University of Huddersfield, and the Engineering And Physical Sciences Research Council.

Statistics:

  • 54%: The proportion of global fibre production accounted for by polyester.
  • 1%: The percentage of clothing that is recycled into new textiles.
  • 70-96%: The range of dye removal from low-temperature dyed fabrics.
  • 70-75%: The range of dye removal from high-temperature dyed fabrics.
  • 75-25: The optimal ratio of Cyrene to water for dye extraction.

Sources:

  • "Focused parameter study of dye removal from PET textiles using Cyrene: Toward sustainable textile recycling." Environmental Challenges, 2025, 20(), 101284.