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Cutting ship emissions at the source: Alisha Fredriksson and Roujia Wen in top 10 innovators of the Young Inventors Prize 2025
Most carbon capture systems require costly, energy-intensive systems for compressing and storing CO₂ onboard, but Seabound's compact, container-based system This removes the need for pressurised CO₂ tanks and also streamlines portside logistics as the limestone can be offloaded in shipping containers as ordinary cargo.
The Seabound system is designed to offer flexibility to shipowners - the modular units can be scaled up to match a ship's emissions. The system operates efficiently, using exhaust heat to sustain the process while requiring only minimal energy for sensors and valves. The limestone can then be sold for use as building materials or post-processed nearby port to release CO₂, which can be used in other products (e.g., e-fuel production) or for sequestration, with the lime recycled for future capture.
Fredriksson and Wen met at university and co-founded Seabound in 2021, driven by the need for a practical solution to maritime emissions. Fredriksson had worked with maritime e-fuels, where captured CO₂ was needed as a feedstock but was in short supply. Wen, with a background in applied mathematics and AI, helped " explained Wen.
They iterated through multiple working prototypes in their London workshop before moving to full-scale trials at sea. According to Seabound, their system was tested on a commercial cargo ship and successfully captured CO₂ at 78% efficiency and sulphur emissions at 90% efficiency. " " added Fredriksson.
Fredriksson and Wen's invention supports SDG 13 (Climate Action) by providing a practical, scalable solution for reducing carbon emissions in the maritime industry.
Find more information about the invention's impact, the technology and the inventor's story here.
Aimed at individuals 30 and under, the Young Inventors Prize showcases the transformative power of youth-driven solutions and recognises the remarkable young people paving the way to a more sustainable future. Established in 2022, trophies were first handed out during the European Inventor Award ceremony. From 2025 onwards, the Prize will move up a gear with its own dedicated event, held separately from the Award. Among the 10 Tomorrow Shapers selected for each edition, three will be awarded a special prize: World Builders, Community Healers, and Nature Guardians. In addition, a People's Choice winner, voted by the public online, will be revealed. Each Tomorrow Shaper will receive EUR 5 000, the three special prize winners will each receive an extra EUR 15 000. The People's Choice winner will be awarded an additional EUR 5 000. Read more on the Young Inventors Prize eligibility and selection criteria.
With 6,300 staff members, the European Patent Office (EPO) is one of the largest public service institutions in Europe . Headquartered in Munich with offices in Berlin , Brussels , The Hague and Vienna , the EPO was founded with the aim of strengthening co-operation on patents in Europe . Through the EPO's centralised patent granting procedure, inventors are able to obtain high-quality patent protection in up to 46 countries, covering a market of some 700 million people. The EPO is also the world's leading authority in patent information and patent searching.
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