Capturing CO₂ using cryogenics: Eiffage's unique experiment to decarbonize its industry

The installation – an eleven-meter-high metal tower flanked by a container and a tank, one to store liquid nitrogen, the other to capture carbon dioxide ( _CO2 ) – would go almost unnoticed alongside the two enormous lime kilns that continuously transform limestone, extracted from a Bocahut quarry, into calcium oxide. This tangle of pipes and tubes, permanently covered in white dust, is the demonstrator of the Lyon-based start-up Revcoo, which has developed an exclusive process for capturing _CO2 .

Since 2024, it has been tested on this 120-hectare open-air site, owned by the Eiffage construction group, located in Haut-Lieu (Nord), a commune in Avesnois located twenty-five kilometers south of Maubeuge. "At the moment, our pilot has a capacity to capture 1,000 tons of _CO2 per year. Our objective is to multiply this result by ten in 2027, then to reach 80,000 to 100,000 tons in 2030, the equivalent of the total emissions on the site," explains Hugo Lucas, founder and president of Revcoo.

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