Investigation of CO₂ capture by growth kinetics studies of Chlorella Vulgaris in batch photobioreactor under dafferent air-CO₂ mixing ratio

Microalgae culture is now growing interest because of it can be cultivated on non-agricultural land using wastewater along with CO₂ that can be obtained from fossil fuel combustion. Also microalgae are contains high oil and starch making possible the production of good quality biodiesel. Thus, algae culture can contribute to CO₂ fixation, wastewater treatment and can be a source of bio-energy. As in the Middle East countries especially in Saudi Arabia region huge amount of CO₂ emitted from industrial and automobile sources (power plant, desalination, cement). Due to the scarcity of sweet water, reuse of wastewater also a necessary with minimum energy and costs. With targeting the CO₂ mitigation and wastewater treatment Chlorella Vulgaris were cultured in batch photo-bioreactors. The six different CO₂ concentrations of 2%, 4%, 6%, 8%, 10% and 12% in Air are used to study the effect of growth kinetics, cell density and dry biomass production rate. Results of the finding used for optimize operating parameters for culture developing of Chlorella Vulgariswith maximum CO₂ utilization.