Scientists Develop Simple Method to Convert Plastic Waste into Fuel
Plastic waste, a persistent environmental challenge, may soon have a new avenue for repurposing. Scientists at Oak Ridge National Laboratory have developed a method that converts polyethylene—the plastic commonly found in shopping bags and household items like cutting boards—into usable fuels.
The process relies on aluminum-based molten salts to break apart the long polymer chains that make up plastic, separating them into smaller hydrocarbon molecules. What distinguishes this approach is its relative simplicity and the use of inexpensive materials. Under relatively mild operating conditions, the reaction yields approximately 60% gasoline, with the remainder producing diesel-like fuels.
This development addresses a significant waste management challenge. Polyethylene is one of the most widely produced plastics globally, and its durability—while useful for packaging—creates disposal difficulties. Traditional recycling methods often struggle to handle the volume of plastic waste generated worldwide.
The researchers emphasize that the process operates under mild conditions compared to other chemical recycling approaches, potentially making it more energy-efficient to implement at scale. The ability to produce transportation fuels from waste plastic could offer a complementary strategy to conventional recycling, particularly for plastics that are difficult to reprocess into new products.