Cultivation of Chlorella Vulgaris using airlift photobioreactor sparged with 5% CO2-air as a biofixing process

Abstract EN

The present paper addresses cultivation of Chlorella vulgaris microalgae using airlift photobioreactor that sparged with 5% CO2/air.

The experimental data were compared with that obtained from bioreactor aerated with air and unsparged bioreactor.

The results showed that the concentration of biomass is 0.36 g l-1 in sparged bioreactor with CO2/air, while, the concentration of biomass reached to 0.069 g l-1 in the unsparged bioreactor.

They showed also that aerated bioreactor with CO2/air gives more biomass production even the bioreactor was aerated with air.

This study proved that application of sparging system for cultivation of Chlorella vulgaris microalgae using either CO2/air mixture or air has a significant growth rate, since the bioreactors become more thermodynamically favorable and provide impetus for a higher level of production.