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ABSTRACT
Scenedesmus obliquus was cultured in diluted cattle wastewater, and the effects of dilution ratio on nutrient removal, sedimentation efficiency, and lipid production were investigated.
Results showed the optimum dilution ratio was 1/5. Under this condition, the removal amounts of NH4+-N, Total nitrogen (TN), and Total phosphorus (TP) reached 17.7 ± 0.7, 28.4 ± 0.6, and 1.81 ± 0.1 mg L−1, respectively. The corresponding sedimentation efficiency was higher than 75%, and lipid productivity was around 10.5 mg L−1 day−1. The main fatty acid contains α-linolenic acid (C18:3) and palmitic acid (C16:0). This lipid composition was suitable for biodiesel production.
Additional information
Funding
This work was financially supported by the Ministry of Science and Technology of China under Grant (2018ZX07208-004); Anhui Provincial Science and Technology Department under Grant (1804a0802194); State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences under Grant (KF2017-20).