Sustainable technology company Cool Planet Technologies Limited (CPT) will push for decarbonisation efforts using membrane gas separation technology along with Holcim Deutschland GmbH (Holcim).

In conjunction with partner Helmholtz-Zentrum hereon GmbH (Hereon), the companies plan to build a carbon dioxide (CO2) capture plant at Holcim’s Hover cement works near Hannover.

The plant will harness Hereon’s PolyActive membrane technology, which uses a selective barrier material that filters some gases but allows through CO2. The low-cost solution is passive and requires less energy, in addition to being easily scalable, providing a suitable option for retrofitting or ‘end of pipe’ projects.

With cement production contributing to 8% of the world’s annual CO2 emissions, the location of the plant is no coincidence.

“Cement will remain an important building material for centuries to come so decarbonising its manufacture is a key part of achieving net zero,” said Andrew Corner, Managing Director, CPT.

“The technology being provided by CPT and Hereon will capture more than 90% of CO2 emitted at Hover.”

Carbon capture is seen as a ‘must’ for cement plants in the near future, with scalability of the technology being seen as a priority.

“The membrane approach of CPT is a promising solution,” said Arne Stecher, Head of Decarbonisation, Holcim. “Therefore, we and our partners are on the way to improve the level of technical readiness dramatically.”

Scheduled for start-up in Q2 2023, the first phase of the project will capture 5,600 tonnes per annum (tpa) of CO2, scaling up throughout the project’s lifetime with the final phase aiming to capture over 90% of emissions, delivering the CO2 in liquid form for use or storage.