Wastewater treatment, along with the simultaneous production of valuable chemical compounds, including lipids by microalgae is a challenging but attractive study. Towards this goal, the candidate microalgae were selected from culture collections or isolated from wastewater in this study. The initial screening test using microalgae revealed that various eukaryotic as well as prokaryotic microalgae showed steady growth in municipal wastewater samples. Among them, Tetraselmis sp. NKG400013 and Parachlorella kessleri NKG021201 from culture collections, and Chloroidium saccharophilum NKH13 from the wastewater sample exhibited high biomass productivity. Furthermore, P. kessleri NKG021201 and C. saccharophilum NKH13 showed high lipid productivity (56 ± 1 mg/L/day for NKG021201, 35 ± 10 mg/L/day for NKH13). During this cultivation, 99% of nitrogen and 82% of phosphorous compounds were removed from the wastewater sample by the strain NKG021201. Analysis of fatty acid compositions of P. kessleri NKG021201 and C. saccharophilum NKH13 revealed that lipids derived from these microalgae were suitable for the application of biodiesel fuels, indicating that these microalgae were promising for wastewater treatment and lipid production.

中文翻译：

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微藻的选择和表征，可从市政废水中去除营养并同时生产脂质。

废水处理以及通过微藻类同时生产有价值的化合物（包括脂质）是一项具有挑战性但有吸引力的研究。为了实现这一目标，在本研究中，从培养物收集物中选择了候选微藻，或从废水中分离了候选微藻。使用微藻的初步筛选测试表明，各种真核和原核微藻在市政废水样品中均显示出稳定的增长。其中，Tetraselmis sp。来自培养物收集的NKG400013和kessleri副小球藻NKG021201以及来自废水样品的嗜糖绿藻NKH13表现出高的生物量生产率。此外，凯士勒球菌NKG021201和嗜糖梭状芽胞杆菌NKH13显示出高的脂质生产率（NKG021201为56±1mg / L /天，NKH13为35±10mg / L /天）。在耕种期间 通过菌株NKG021201从废水样品中去除了99％的氮和82％的磷化合物。对P. kessleri NKG021201和C. saccharophilum NKH13的脂肪酸组成的分析显示，衍生自这些微藻的脂质适用于生物柴油燃料的应用，表明这些微藻有望用于废水处理和脂质生产。