Coffee and plastic waste transformed into carbon capture material

Researchers at the University of Sharjah in the UAE have developed and patented a novel technology that transforms spent coffee grounds (SCG) from Starbucks in Dubai and polyethylene terephthalate (PET) plastic waste into high-performance activated carbon for carbon dioxide (CO2) capture. This innovation addresses two critical environmental challenges simultaneously: reducing industrial CO2 emissions and managing large volumes of waste. The process involves co-pyrolysis of coffee and plastic waste at 600°C with potassium hydroxide (KOH) as an activating agent, producing a material with strong CO2 adsorption capacity suitable for industrial applications. This dual-purpose technology leverages abundant waste streams—over 10 billion kilograms of coffee waste and millions of tons of PET plastic produced annually—to create an economically viable and sustainable solution for carbon capture. The activated carbon produced can effectively adsorb CO2 from fossil fuel-based energy systems, helping mitigate air pollution and climate change. The researchers emphasize the environmental, social, and economic benefits of repurposing these