Chlorella vulgaris biomass production using brewery wastewater with high chemical oxygen demand
- Lois Milevicich, Julieta
- Casá, Nahuel Esteban
- Alvarez, Paola
- Mateucci, Ricardo Rafael
- Busto, Víctor Daniel
- de Escalada Pla, Marina Francisca
DOIAbstract
The aim of the work was to use an effluent with high chemical oxygen demand (COD) from small brewery as substrate for the production of Chlorella vulgaris biomass. A non-axenic strain from a Patagonian river was employed, and the effects of COD and pH value on the microalga growth were studied through a central composite design. A medium with COD 18300 mg O2 mL−1 and initial pH: 6.5 optimized microalga growth. With the optimal condition, C. vulgaris adapted rapidly to medium and stationary phase was attained at 75 h. Moreover, lack of illumination did not affect μmax, neither final biomass concentration, while supplementation with BG11 enhanced the biomass productivity at 0.47 ± 0.07 g L−1 h−1, and pigment contents at least four times respe...
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