Northwestern University researchers unveil groundbreaking method for polyethylene terephthalate recycling

Chicago, IL – Northwestern University researchers have unveiled a groundbreaking method for plastic recycling that promises to revolutionize the industry. Utilizing a simple, inexpensive catalyst and ambient air, the team has developed a process that breaks down polyethylene terephthalate (PET) plastic into monomer building blocks. This innovative approach not only simplifies the recycling process but also eliminates the need for harsh chemicals and produces no toxic byproducts.

The new technique leverages the trace amounts of moisture present in the air to convert broken-down PET into monomers. These monomers can then be recycled into new PET products or upcycled into higher-value materials. In experiments, the method successfully recovered 94 percent of monomers from PET in just four hours, demonstrating its efficiency and potential for real-world applications.

Professor Tobin J. Marks, who led the research team, emphasized the environmental benefits of this solvent-free process. “Our study offers a sustainable and efficient solution to one of the world’s most pressing environmental challenges: plastic waste,” said Marks. Unlike traditional recycling methods, which often produce harmful byproducts and require significant energy inputs, this new approach is cleaner, safer, and more cost-effective.

The research, published in the journal Green Chemistry, highlights the urgent need for better plastic recycling technologies. The United States is the number one plastic polluter per capita, yet only recycles about 5 percent of its plastic waste. Current methods typically downcycle plastic bottles into lower-quality products, but Northwestern’s technique offers a way to upcycle plastics into more valuable materials.

Co-corresponding author Yosi Kratish expressed excitement about the potential impact of their findings. “What’s particularly exciting about our research is that we harnessed moisture from air to break down the plastics, achieving an exceptionally clean and selective process,” said Kratish. This breakthrough could pave the way for a circular economy for plastics, where waste is continuously recycled and reused.

The team at Northwestern University hopes their research will inspire further advancements in plastic recycling and encourage the adoption of more sustainable practices. As the world grapples with the growing problem of plastic pollution, innovative solutions like this one are crucial for protecting the environment and promoting a greener future.