Recently, microalgae are considered as one of the most practical energy sources for biofuel, instead of fossil fuel. For the production of microalgae biomass, various closed types of photobioreactors have been developed to solve the problems such as m...
Recently, microalgae are considered as one of the most practical energy sources for biofuel, instead of fossil fuel. For the production of microalgae biomass, various closed types of photobioreactors have been developed to solve the problems such as mass transfer, contamination, light distribution and carbon dioxide supply. In this study, a cylindrical type, internally radiating photobioreactor is proposed. This bioreactor has a multi-layered wall including light emitting diodes to maximize the surface to volume ratio for cultivation of microalgae. Furthermore, a spiral-type impeller of the bioreactor is designed to have the optimal values of internal flow velocity and carbon dioxide distribution, using CFD simulations.