Researchers at the University of Sharjah have patented a technology designed to capture carbon dioxide (CO₂) from industrial processes before it is released into the atmosphere. The patent, filed in March 2025 and published in August, outlines a novel and highly detailed method with promising potential to reduce environmental pollution, industrial emissions, and anthropogenic CO₂. This approach utilizes a blend of spent coffee grounds (SCG), polyethylene terephthalate (PET), a common plastic used in packaging, and potassium hydroxide, a strong alkaline chemical. Together, these components form an effective material for CO₂ adsorption.
Dr. Aljomard explained that the innovation centers on producing activated carbon through the co-pyrolysis of spent coffee grounds and polyethylene terephthalate plastic waste, using potassium hydroxide (KOH) as the activating agent. The process operates at an eco-friendly activation temperature of 600°C, offering a sustainable solution that supports both waste valorization and climate change mitigation.
The inventors report that their method yields activated carbon with high CO₂ adsorption capacity, making it suitable for industrial applications. They also underscore the low production costs, thanks to the affordability and availability of raw materials. Co-inventor Professor Chaouki Ghenai, a specialist in Sustainable and Renewable Energy at the University of Sharjah, added, ”This invention exemplifies circular economy principles by integrating waste streams for dual valorization and upcycling into valuable products.”
Source: Phys.org
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