Your empty cuppa could capture carbon
Summary
Scientists at Aarhus University found a way to recycle discarded polystyrene plastics into materials that can capture carbon dioxide (CO2) from the air. They chemically modify the plastic by adding amines, substances that grab CO2, turning trash like Styrofoam and food packaging into reusable carbon-capture tools.Key Facts
- Polystyrene, used in items like Styrofoam, food containers, and CD cases, is mostly not recycled (less than 1% in the US).
- The research team adds bromine atoms and amine groups to polystyrene to create a material that can capture CO2.
- Amines work like sponges that grab CO2 when cool and release it when heated, allowing repeated use.
- This solid amine-based material is more energy-efficient than earlier liquid amine systems.
- The new material captured CO2 effectively both from high concentration sources like smokestacks and from ambient air with lower CO2 levels.
- Researchers can adjust the amount of amine and the structure of the material to improve performance.
- The team also tested plastic waste from urethane foam and building trim but found these materials less effective for carbon capture.
- This approach helps reduce plastic waste and provides a new way to help fight climate change by removing CO2 from the atmosphere.
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