Bioreators are used in all kinds of bioprocess, including those for making vaccines, antibiotics, amino acids, and many other high-value-added products such as the carotenoids and also in the biodiesel production. Many different designs of photobioreactors have been developed, but a tubular photobioreactor seems to be most satisfactory for producing algal biomass on the scale needed for high-value-added production. The microalgae productions in tubular photobioreactors that circulate the culture by using an airlift device are especially attractive for several reasons: circulation is achieved without moving parts and this provides a robust culture system with a reduced potential for contamination. The aim of the work is the design and construction of a mechanically agitated photobioreactor airlift and lipids and carbohydrates production through the microalgae Chlorella vulgaris. The studies of the fermentation will carried out in a laboratory scale in an stirred photobiorreactor airlift designed and constructed in this work, the C. vulgaris microalgae and vegetable waste will used. The bioreactor designed will the glass and internal recirculation (a concentric draft-tube airlift vessel device) in its exterior with LED lamps which can be operated at a gradient of light intensity. An experimental design will used to evaluate the best conditions of process, where the influence of the concentration, pH, stirring, intensity of light and flow rate of the CO2 will investigate. The biomass is analyzed concerning by lipids, carbohydrates, and proteins.
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