Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India.
Environ Sci Pollut Res Int. 2018 Jul;25(19):18673-18681. doi: 10.1007/s11356-018-1967-5. Epub 2018 Apr 28.
Four microalgal strains, namely, Tetraselmis indica (T. indica), Scenedesmus abundans (S. abundans), Spirulina sp., and Nostoc muscorum (N. muscorum) were cultivated on four different wastewaters in 1000 ml photobioreactors with 750 ml working volume under 94.5 μmol m s light intensity for 14 days for phycoremediation of wastewaters and sustainable biodiesel production. These microalgal strains attained maximum biomass growth in the secondary treated sewage (STS). Maximum biomass yield (0.6533 g L) and lipid productivity (25.44 mg L d) for T. indica were achieved in STS. T. indica removed (63.6-78.24%) of nitrate, (60.90-65.97%) of phosphate, (61.01-80.01%) of ammonical nitrogen, and (71.16-85.70%) of total organic carbon (TOC) in all four wastewaters. The fatty acid methyl ester (FAME) profile of T. indica shows the presence of myristic acid (1.2%) pentadecylic acid (0.28%), palmitic acid (10.32%), oleic acid (34.59%), linoleic acid (12.38%), and eicosanoic acid (14.88%) in STS. This study demonstrates that T. indica is the most suitable microalgal species among the four microalgal strains selected for phycoremediation of wastewaters and higher biomass production for sustainable biodiesel production.
四种微藻菌株，即塔玛斯菱形藻（T. indica）、丰年虫（S. abundans）、螺旋藻和念珠藻（N. muscorum），在 1000ml 光生物反应器中，在 94.5 μmol m s 光强下，用 750ml 工作体积，在四种不同废水中培养 14 天，用于废水的光修复和可持续生物柴油生产。这些微藻菌株在二级处理污水（STS）中达到最大生物量生长。T. indica 在 STS 中达到最大生物量产量（0.6533 g L）和脂质生产力（25.44 mg L d）。T. indica 去除了所有四种废水中的硝酸盐（63.6-78.24%）、磷酸盐（60.90-65.97%）、氨氮（61.01-80.01%）和总有机碳（TOC）（71.16-85.70%）。T. indica 的脂肪酸甲酯（FAME）图谱显示，在 STS 中存在肉豆蔻酸（1.2%）、十五烷酸（0.28%）、棕榈酸（10.32%）、油酸（34.59%）、亚油酸（12.38%）和二十烷酸（14.88%）。本研究表明，在四种微藻菌株中，T. indica 是最适合用于废水光修复和可持续生物柴油生产的微藻物种，可实现更高的生物量生产。
