Carbon Capture Scotland Limited (CCSL), a Scottish company that turns carbon dioxide (CO2) into dry ice for industrial use, has signed an agreement with London-based low carbon investment fund manager Iona Capital to capture and re-use green CO2 from the latter’s biomethane plants across the UK.
Capturing biogenic CO2 — a vital product in the food, cold logistics and pharmaceutical industries — and re-using it as dry ice is expected to help these industries reach net zero, CCSL said in a statement on Tuesday.
The current deal builds on the companies’ existing partnership at Iona’s Crofthead Anaerobic Digestion and biogas plant in Dumfries (pictured below), where CCSL captures the CO2 at its adjacent site to produce dry ice for commercial use.

The companies have now decided to extend their cooperation to any future plants to be developed by Iona in the UK, Europe, and North America.
“The utilization of CO2 generated from farm waste and crops is yet another demonstration of how anaerobic digestion contributes to a sustainable low carbon future and the circular economy,” Alex Todhunter, investment manager at Iona Capital, said in a comment to the deal.
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The partnership with Iona is expected to accelerate CCSL’s business growth in Scotland and beyond, according to Richard Nimmons, director of the Scottish company.
“Importantly, it represents a scalable framework for clear, measurable carbon removal that brings us closer to our goal of removing one million tons of CO2 from the atmosphere per year,” Nimmons added.
CO2, which is usually sourced as a by-product from the production of ammonia — a common fertilizer in agriculture — is an essential compound used in the food, cold logistics and pharmaceutical industries.
100% biogenic green CO2 from farm wastes and crops, using renewable electricity, is expected to offer a low energy green alternative to ammonia production, an energy and carbon intensive process which takes up nearly 2% of global energy production every year.
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