The present invention concerns a module (10) for a photobioreactor suitable for being assembled to an identical adjacent module (10), comprising: a panel (1) having a first face (11) and a second face(12), opposite the first face (12), the first face (11) delimiting, with the second face (12) of the adjacent panel (1), a cavity (14) suitable for containing a culture medium when the modules (10) are assembled, the cavity (14) having a thickness (e) of between 1 millimetre and 2 centimetres, and a gas injection device (2), capable of injecting gas bubbles into the culture medium contained in the cavity (14), such that the bubbles rise along the faces (11, 12) of the panels (1).