Improving air quality in cities and industrial environments with the Pollution and Carbon Sink

The Pollution and Carbon Sink is a major solution in our AirAdvanced range for improving air quality. Based on the principle of photosynthesis, it relies on microalgae cultivated in a water column. They capture fine particulates and excess CO2.
Our innovation

Reducing pollution with the power of microalgae

Developed in partnership with the French start-up Fermentalg, the Carbon Sink improves air quality thanks to the power of microalgae. The algae capture fine particulates (PM10), nitrogen dioxide (NO2) and excess CO2 and transform them into green energy. In cities, a carbon sink can absorb the equivalent of the pollution emitted by 150 vehicles.


Tests of the system on the INERIS test bench, which is unique in Europe, showed reductions in the levels of fine particulates of about 66% to 99%, and of nitrogen dioxide of 76% to 97% depending on the configuration.

Reducing greenhouse gas emissions and generating green energy

The Carbon Sink can capture up to 10,000 tonnes of carbon and recover an average of 1 tonne of CO2 per year. By capturing the carbon present in the atmosphere, the algae reproduce and form a biomass that flows directly into the sewerage network to the purification plant. This biomass is then collected and recovered as biomethane, which is injected into the gas mains to produce local and renewable energy.

Pollution & Carbon Sink - SUEZ

Credit: SUEZ group

How does it work?

Our AirAdvanced range

Our other solutions from the AirAdvanced range

Pollution and carbon sink is part of the AirAdvanced range of solutions.