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| Hydrocracking Our Way to Recycling Plastic Waste |
| 2021-4-28 |
Polyolefins account for 60 to 70% of all plastics made today.
SEATTLE (Waste Advantage): In the United States, less than 9% of plastic waste is recycled. Instead, more than 75% of plastics waste ends up in landfills and up to 16% is burned, a process that releases toxic gases into the atmosphere. Researchers from the University of Delaware¡¯s Center for Plastics Innovation (CPI) have developed a direct method to convert single-use plastic waste ¡ª plastic bags, yogurt containers, plastic bottles and bottle caps, packaging and more ¡ª to ready-to-use molecules for jet fuels, diesel and lubricants. The work, reported in a paper in Science Advanceson Wednesday, April 21, focuses on using a novel catalyst and unique process to quickly break down these hardest-to-recycle plastics, known as polyolefins. Polyolefins account for 60 to 70% of all plastics made today.
The UD-developed process requires approximately 50% less energy than other technologies, and it doesn¡¯t involve adding carbon dioxide to the atmosphere, an emissions savings over other commonly used techniques. It can be done in just a couple hours at low temperature, around 250 degrees Celsius. This is slightly higher than the 450-degree Fahrenheit oven temperature you might use to roast vegetables or bake a puff pastry at home.
Importantly, the UD team¡¯s method can treat a variety of plastics, even when they are mixed together, a plus considering the way recyclables are managed. ¡°Chemical conversion is the most versatile and robust approach to combat plastics waste,¡± said Dion Vlachos, the project principal investigator and the Unidel Dan Rich Chair in Energy Professor of Chemical and Biomolecular Engineering at UD. |
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2025-4-29
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Cu |
116753 |
-54858 |
Al |
178597 |
-11871 |
Zn |
51378 |
-7207 |
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Cu |
202500 |
-300 |
Al |
417575 |
-2000 |
Zn |
177550 |
-1775 |
Ni |
201564 |
+138 |
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2023-5-15 |
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