title: [Cultivating an oleaginous microalgae with municipal wastewater].
abstract: Municipal wastewater is usually problematic for the environment. The process of oleaginous microalgal culture requires large amounts of nutrients and water. Therefore, we studied the feasibility of oleaginous microalgal culture of Scenedesmus dimorphus in bubbled column photobioreactor with municipal wastewater added with different nutrients. S. dimorphus could adapt municipal nutrient-rich wastewater by adding some nutrients as nitrogen, phosphorus, ferric ammonium citrate and trace elements, and the amounts of such nutrients have significant effects on cell growth, biomass yield and lipid accumulation. At optimum compositions of wastewater medium, the algal cell concentration could reach 8.0 g/L, higher than that of 5.0 g/L in standard BG11. Furthermore, S. dimorphus had strong capacity to absorb inorganic nitrogen and phosphorus from its culture water. There was almost no total nitrogen and phosphorus residues in culture medium after three or four days culturing when the adding mounts of nitrate and phosphate in wastewater medium were no more than 185.2 mg/L and 16.1 mg/L respectively under the experimental conditions. As a conclusion, it was feasible to cultivate oleaginous microalgae with municipal nutrient-rich wastewater, not only producing feedstock for algal biodiesel, but also removing inorganic nitrogen and phosphorus from wastewater.
authors.affiliation: School of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
authors.forename: Sujuan
authors.initials: S
authors.lastname: Lü
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Peng
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Chen
authors.forename: Tianzhong
authors.initials: T
authors.lastname: Liu
mesh_terms: D056804:Biofuels; D002947:Cities; D046508:Culture Techniques / Q000379:methods*; D008055:Lipids / Q000096:biosynthesis*; D058086:Microalgae / Q000378:metabolism*; D058433:Photobioreactors; D044444:Scenedesmus / Q000254:growth & development / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*; D014866:Waste Products
chemical_list: D056804:Biofuels; D008055:Lipids; D014866:Waste Products