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Carbon dioxide biosequestration and energy-repurposing using microalgae

microalgues-CRIQ-L

Reducing greenhouse gas

In collaboration with Institut national d’optique (INO), CRIQ designed a compact hybrid pond, using microalgae to capture and recycle the CO2 contained in gaseous industrial effluents. Needing to adapt conventional technologies to the Canadian climate, the project partners managed to reduce the surface footprint of the process by maximizing photosynthesis. This was achieved using a system to capture and redistribute natural light in a pool deeper than 30 cm.

Using this technology, harvested microalgae are concentrated and can be transformed into various products, such as biohydrogen, biogas, certain pigments, and omega-3s. This recycling project represents a nearly $2 million investment financed by several ministries and partners such as the ministère de l'Économie, de l'Innovation et des Exportations, Aluminerie Alouette, ALCOA, Cliffs Natural Resources, and Rio Tinto Alcan.