Two companies, Holcim and Aurantia are starting a new project to reuse CO
. They take the CO
produced by a cement plant in Jerez de la Frontera in Spain and "feed" it to microalgae which then turn around and produce
. The results of this project will be tested to assess if the carbon dioxide supplied by the cement plant is suitable for the algae. The two companies will also select the best type of algae for the project as well as assessing the viability of the project. The test will be performed on an-almost industrial scale, so once the final green light is given, it could start working immediately.