Abstract: A modular photobioreactor for the production of microalgae particularly suited for absorber emission gases with a high carbon dioxide (CO2) content. It is based on the continuous recirculation of a microalgae-containing liquid medium through sheets of fabric facilitating CO2 absorption and microalgae illumination. The photobioreactor enables supplying the gases to the culture from inside the chamber. It provides highly efficient algae illumination, allows easy exchange of CO2 from the emission gases to the culture and can be used at a low cost on a large scale.