Abstract
The temporal evolution of the absorption cross-section and scattering cross-section of Anabaena sp. grown in flat-plate photobioreactor (PBR) was experimentally measured in the spectral region 380 to 850 nm. The time-dependent light field distribution in PBRs was presented for different growth phases. The relative deviation of light fluence rate and growth rate are calculated based on the growth dependent radiative properties and the radiative properties at stationary phase of microalgae. The results show that the absorption and scattering cross-sections vary significantly with growth time. The light fluence rate and growth rate within the reactor volume are remarkably affected by the growth dependent radiative properties of microalgae at the exponential growth phase. The growth dependent radiative properties of microalgae is crucial to accurately predict the microalgae biomass productivity within PBRs and to optimize the cultivation condition.
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