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Home NEWS Science News Technology

Transforming Coffee and Plastic Waste: A Sustainable Solution for Climate Challenges

Bioengineer by Bioengineer
October 6, 2025
in Technology
Reading Time: 4 mins read
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Transforming Coffee and Plastic Waste: A Sustainable Solution for Climate Challenges
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Researchers at the University of Sharjah have made a remarkable advancement in carbon capture technology, earning a patent for a unique method aimed at intercepting carbon dioxide (CO₂) from industrial emitters before it is released into the atmosphere. This breakthrough is particularly significant given the growing urgency to address climate change through effective reduction of greenhouse gas emissions. The technology revolves around a pioneering process that cleverly combines spent coffee grounds, commonly discarded as waste, with polyethylene terephthalate (PET), a prevalent plastic used in consumer packaging. By leveraging these materials alongside potassium hydroxide, a strong alkaline compound, the researchers have developed a powerful adsorbent capable of trapping CO₂ efficiently.

The patent, filed in March 2025 and published later that year, presents a meticulously detailed methodology that demonstrates a novel approach to reducing environmental pollution and industrial emissions. With an estimated 8 million tons of spent coffee grounds dumped globally each year, primarily in landfills where they contribute to methane emissions, this innovative method offers a dual solution: it not only captures harmful CO₂ but also actively participates in sustainable waste management. The repurposing of waste materials into high-value products underscores a transformative shift towards a circular economy, where waste is viewed as a resource rather than merely refuse.

At the heart of this technology lies the process of co-pyrolysis, where spent coffee grounds and PET are subjected to high temperatures in the presence of potassium hydroxide to produce activated carbon. This activated carbon is crucial for CO₂ adsorption, serving as an efficient medium to bind carbon molecules due to its porous structure and large surface area. Operating at an eco-friendly activation temperature of 600°C, the method is aligned with sustainable practices, promoting both waste valorization and climate protection.

Dr. Haif Aljomard, the lead inventor of this revolutionary technology, expressed enthusiasm for the impact it could have on climate change mitigation. He elaborated on how materials as commonplace as a Starbucks coffee cup and a discarded plastic bottle could be transformed into a valuable asset in the fight against global warming. The vision not only encompasses carbon capture but also addresses the broader implications of reusing waste streams, thereby fostering an environment where carbon negativity becomes achievable.

The implications of this patented method extend far beyond mere CO₂ capture. The activated carbon produced through this process is poised for extensive industrial applications. Its high adsorption capacity renders it ideal for various sectors, including water and air treatment, chemical engineering, and energy systems. With increasing industrial operations demanding effective solutions for pollution control, the versatility of this technology positions it as a frontrunner in addressing both environmental concerns and operational efficiencies.

Moreover, the economic viability of the technique cannot be overlooked. The low production costs stemming from the affordability and availability of raw materials like coffee grounds and PET make this method particularly attractive for implementation across different industries. Professor Chaouki Ghenai, a co-inventor and expert in sustainable energy, highlighted the economic, social, and environmental advantages derived from this innovation. He emphasized that upcycling waste into high-performance adsorbents not only protects the environment from their potentially harmful effects but also offers a viable path towards sustainable industrial practices.

The breadth of applications envisioned for this technology is extensive. It encompasses various water treatment processes, including gas purification, drinking water filtration, and even wastewater treatment systems. In the air purification sector, it promises significant contributions by cleaning flue gases from waste incineration and controlling emissions from fossil fuel combustion. As industries continue to grapple with tighter regulations regarding pollution and emissions, this patented CO₂ capture technology presents a timely and essential solution.

The urgency of developing effective technologies to combat climate change is underscored by the escalating concentration of atmospheric CO₂, a known driver of global warming and environmental degradation. The patent documentation articulates this pressing concern, emphasizing the critical need for innovative approaches to diminish CO₂ emissions from key contributors such as industrial processes and power generation. By providing a robust mechanism to capture and repurpose carbon emissions, researchers at the University of Sharjah are paving the way for more sustainable industrial practices.

As this groundbreaking technology transitions towards industrial deployment, confidence in its performance to mitigate environmental pollutants and contaminants is high. The potential to drive industry-wide change is significant, reflecting a well-rounded understanding of the intersection between energy production, waste management, and environmental stewardship. The researchers anticipate that their method will not only enhance air and water quality but also revolutionize the way industries manage their ecological footprints.

In the quest for a sustainable future, the combination of innovative carbon capture techniques and effective waste management solutions is paramount. The newly patented technology stands at the forefront of this movement, offering practical and scalable methods to reduce carbon emissions while simultaneously harnessing the potential of discarded materials. With committed efforts from the inventor team and potential alliances in the industrial sector, this technology has the opportunity to make substantial strides in the global effort to combat climate change.

As the narrative of climate action evolves, the role of academia and research institutions remains crucial. Their findings offer pivotal insights that bridge scientific knowledge with practical solutions, enabling a transition to a more sustainable future. The collaboration between researchers, industry partners, and policymakers will be essential in ensuring that innovations like this receive the support they need to be effectively deployed on a large scale, ultimately contributing to a healthier, greener planet for generations to come.

In summary, the University of Sharjah’s patent on carbon capture technology exemplifies the confluence of scientific innovation and environmental necessity. Through the strategic reuse of waste materials and the synthesis of activated carbon, the inventors present a compelling case for sustainable practices aimed at reducing greenhouse gas emissions. This patent not only exemplifies the remarkable potential inherent in transforming waste into valuable resources but also sets a precedent for future developments in environmental technology.

Subject of Research: Not applicable
Article Title: Groundbreaking Carbon Capture Technology: Transforming Waste into Valuable Resources
News Publication Date: October 2023
Web References: https://patents.google.com/patent/US12391556B1/en
References: Not available
Image Credits: Credit: University of Sharjah

Keywords
Tags: carbon capture technologycircular economy practicesclimate change mitigation strategiesCO2 emissions reduction methodscoffee grounds recycling initiativeseco-friendly materials developmentenvironmental sustainability researchindustrial pollution control innovationsinnovative carbon adsorbentspolyethylene terephthalate repurposingsustainable waste management solutionstransforming waste into valuable resources

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