Sustainable integration of biofuel generation and domestic wastewater treatment by chlorella vulgaris
Integração sustentável da geração de biocombustíveis e do tratamento de águas residuais domésticas pela chlorella vulgaris
Keywords:wasterwater treatment, microalgae, <em>Chlorella vulgaris</em>,, oil content
The production of microalgae biofuels has become promising because it is a renewable, non-polluting and non-competitive source such as food growing areas. This work has the objective of using the effluents generated by the Lorena Engineering School - EEL / USP as a growth medium for microalgae of the Chlorella vulgaris species, aiming at lipid production and treatment of effluents. The laps were completed in photobioreactor with effluent from the collection on alternate days. C. vulgaris showed good adaptation to the effluent, reaching a cell density of 1.92x107 cells.mL-1 and a dry biomass concentration of 1.74 g.L-1. The lipid content per gram of biomass was 0.095 to 0.164 mg.g-1. Concomitantly, between 54% and 78.74% of nitrate was dismissed and the chemical oxygen demand (COD) fell between 17.73% and 36.13%. With the results of statistical analysis (ANOVA and Tukey's test). Although lipid has been lower, the success of the microalga Chlorella vulgaris in this sense must have been similar to that of the same.