Germany: Holcim Deutschland says that the preliminary test phase of a new CO₂ separation unit at its Höver cement plant in Lower Saxony has delivered positive results. Plant manager Stephan Hinrichs said that the company was “delighted” with the results so far. In late 2021 Cool Planet Technologies and Hereon signed a memorandum of understanding with Holcim Deutschland to deliver a carbon capture system for a carbon capture and storage (CCS) trial at the plant based on Hereon’s PolyActive membrane technology.

The next stage of the project will start in August 2022 and it will last until late 2024. This will include a one-year active test phase, in which the system is to be examined in long-term operation, planned to start in September 2023. If the results are good enough then the carbon capture unit will be expanded step-by-step so that after the final expansion stage it can separate around 90% of the CO₂ emissions and deliver high-purity CO₂ in liquid form for sequestration or further use. The ultimate aim of the project is to demonstrate performance, economy and operational behaviour on a larger scale in order to check whether the technology can be used at both Höver and other cement plants. Continued funding for the scheme is dependent on an application to the Competence Centre on Climate Change Mitigation in Energy-Intensive Industries (KEI) as part of the Decarbonisation in Industry program.