University of Waterloo (UW) Researchers Convert Plastic Waste into Acetic Acid Using Sunlight

Key facts

• Researchers at the University of Waterloo (UW) in Canada developed a light-powered system to convert plastic waste into acetic acid, the primary component of vinegar.
• The process utilizes photocatalysis, using sunlight as an energy source to trigger a chemical reaction that breaks down plastic polymers at room temperature.
• The study, published in the journal Advanced Energy Materials, successfully produced acetic acid from Polyethylene (PE), Polyethylene Terephthalate (PET), Polypropylene (PP), and Polyvinyl Chloride (PVC).
• Polyvinyl Chloride (PVC) achieved the highest yield in the experiment at 63.8 milligrams per hour per gram of catalyst.
• Polyethylene (PE) produced a yield of 12.7 milligrams per hour per gram of catalyst, while Polyethylene Terephthalate (PET) and Polypropylene (PP) both yielded approximately 5.4 milligrams per hour per gram.
• The innovation aims to provide a sustainable alternative to traditional acetic acid production, which currently generates over 17 million tonnes annually using fossil fuels like natural gas and coal.
• The chemical reaction mimics the natural step-by-step breakdown of organic matter observed in specific types of fungi.