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4 December 2023

CO2 recovery at Tennent Caledonian Breweries Ltd.

Tennent Caledonian Breweries Ltd. Reduces Its Reliance on Sourcing CO2 with Pentair CO2 Recovery System Scottish-based Tennent Caledonian is transforming its carbon footprint by implementing a cutti...

Tennent Caledonian Breweries Ltd. Reduces Its Reliance on Sourcing CO2 with Pentair CO2 Recovery System

Scottish-based Tennent Caledonian is transforming its carbon footprint by implementing a cutting-edge CO2 collection and recovery system. Traditionally reliant on purchased CO2, the brewery faced challenges such as environmental impact and market price fluctuations.


Partnering with global solutions provider Pentair, Tennent’s transitioned from venting CO2 into the atmosphere to harvesting and recovering it for reuse in their beer production process.

The Process: Pentair's Tank Top Valve technology collects CO2 from fermentation tanks, directing it through a gas manifold system. After a recovery process involving compression, filtration, and liquification, the recovered CO2 is stored for reuse.

Results: Tennent Caledonian now recovers over 4,200 tonnes of its own CO2 annually, repurposing 95% of it back into brewing processes. This sustainable initiative not only reduces environmental impact but also provides the brewery with independence from market fluctuations.

Alasdair Hamilton, Engineering Manager at Tennent Caledonian, acknowledges Pentair's expertise, stating, “As an environmentally conscious brewery, it was a natural decision to utilize the CO2 generated in our fermentation process and incorporate it back into our brewing. Thanks to Pentair’s expertise, we could implement the technology. From start to finish, our experience with Pentair was exceptional. They recommended a comprehensive system that allows us to recover our CO2 and reintroduce it back into our brewing process through a collection capability. With this system in place, we can avoid the fluctuations of the CO2 market and focus on consistent and reliable operations.”

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