Luminosity and Chemical Stress Improve the Production of Biomass and Biomolecules from Chlorella Vulgaris Cultivated in Produced Water

Produced water (PW) is an effluent from the petrochemical industry that has a significant environmental impact due to its high salinity and presence of chemical compounds and heavy metal. Microalgae have been considered promising to phytoremediation of this effluent and producing biomass with high added value. Therefore, this study aimed to stimulate the production of biomass and biomolecules from Chlorella vulgaris by supplementation with PW and evaluate the synergistic effect of sources of physical and chemical stress. C. vulgaris was cultivated in different PW concentations of PW (not autoclaved) and BG11 medium under a 24 h photoperiod, with inoculum pre-adapted the same photoperiod. The culture containing 70