Degen, J.J.DegenUebele, A.A.UebeleRetze, A.A.RetzeSchmid-Staiger, U.U.Schmid-StaigerTrösch, WalterWalterTrösch2022-03-032022-03-032001https://publica.fraunhofer.de/handle/publica/20050910.1016/S0168-1656(01)00350-9A newly developed flat panel airlift photobioreactor with a defined circulation path was tested for microalgal culture. The bioreactor exposed the cells to intermittent light to improve the efficiency of light utilization through the flashing-light effect. During batch cultures in the new photobioreactor, the biomass productivity of Chlorella vulgaris was 1.7 times greater than in a randomly mixed bubble column of identical dimension. A reduction in light path from 30 to 15 mm increased the biomass productivity by 2.5-fold. A maximum dry biomass productivity of 0.11 g l(-1)h(-1) was obtained at an artificial illumination of 980 muE m(-2) s(-1).en610620660621697journal article