Comparison of Biomass and Oil productivity of Selected Microalgae in Livestock Wastewater

摘要

This study aimed to compare the biomass and oil productivity from three selected microalgae strains (Botryocococcus braunii, Scenedesmus dimorphus, and Nannochlorpsis sp) using livestock wastewater for dual purposes of biofuel production and animal waste nutrient removal. The selected algal strains were batch-wise cultivated in the laboratory in Basal medium and livestock wastewater with optimal nutrient concentration. The results indicated that all three algae strains grew better in 50% autoclaved wastewater than in Basal medium. The maximum lipid yield of B. braunii, S. dimorphus, and N. sp were 0.61 g/l (38.88% lipid content), 0.69 g/l (61.76% lipid content), and 1.32 g/l (37.47% lipid content) all in 50% autoclaved wastewater. N and P in wastewater were completely removed by the three selected strains at day 21, respectively.