Coffee Waste and Plastic Used in New Carbon Capture Method

University of Sharjah researchers developed a carbon capture method using coffee grounds and plastic. The process, detailed on October 6, 2025, combines spent coffee grounds with polyethylene terephthalate (PET) to trap carbon dioxide (CO₂) from industrial sources. This addresses greenhouse gas emissions by converting waste into a valuable resource. The patented technology employs co-pyrolysis, heating the mixture with potassium hydroxide to create activated carbon. This resulting material efficiently adsorbs CO₂. Globally, an estimated eight million tons of coffee grounds end up in landfills annually. This decomposition generates methane, a potent greenhouse gas. The new method offers a dual benefit: it reduces CO₂ emissions and promotes sustainable waste management. Dr. Haif Aljomard, the project lead, noted the potential to transform discarded items into resources for mitigating global warming. The process's economic viability stems from its low production costs, making it attractive to various industries. Professor Chaouki Ghenai emphasized the economic, social, and environmental advantages of upcycling waste. With increasing pressure on industries to reduce emissions, this carbon capture technology provides a timely solution. Applications extend to sectors like water treatment and air purification, offering broad potential for improved sustainability.