SCIENCE: Microalgae, the Green Gold

Much more eco-friendly than nuclear plants and "greener" than oil, microalgae manage to produce energy and will be soon replacing polluting fuels.

In any way whatsoever, the process remains identical. This microorganism, which usually grows in mud or mushrooms, is evolving through a photo bioreactor and produce hydrogen then heat and energy. Exposed to the light, it absorbs the CO2 within to convert it into biomass and is reused as an energy source.

The bio reactive façade of Séché Environement group already consents to save 50% of cooling and heating resources in its test building, SymBio2. Here, the microscopic algae stabilise the walls temperature between 18 and 20°C. By supporting this revolutionary project, the French State is considering generalising it. There is a similar building in Hamburg, the BIQ House. The Splitterwerk and Arup’s green house and its 129 algae panels make it possible to provide heating for its residents.

The uses of this Green Gold are multiple and non-polluting. From the algae fuel invented by French company Ennesys to Pierre Calleja’s street lamp in Bordeaux, micro-algae grow without involving environmental hazard.

Translated by S. Muller –