Simultaneous biological desalination and lipid production by Scenedesmus obliquus cultured with brackish water
Simultaneous biological desalination and lipid production by Scenedesmus obliquus cultured with brackish water
复制标题
微咸水培养斜生栅藻同时生物脱盐和产脂
DOI：
10.1016/j.desal.2016.09.012
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发表时间：
2016-12-15
期刊：
影响因子：
9.9
通讯作者：
Li, Ming
中科院分区：
文献类型：
--
作者：
Gan, Xinyu;Shen, Guangzhu;Li, Ming
苦咸水是藻类培养的良好选择，可同时实现生物淡化和生物柴油生产。将斜生栅藻在不同盐度(1.2、2.8、4.8、6.8和8.8 g L-1 NaCl)的BG-11培养基中培养16天。生长速度随着盐度的增加而降低。除了8.8 g L-1 NaCl处理的藻类的沉降效率（60 min）为54%外，所有处理的沉降效率（60 min）几乎相同（77%-83%）。在用 8.8 g L-1 NaCl 处理的样品中观察到最高的脂质含量为 21%，而对照中的脂质含量为 16%。随着盐度的升高，脱盐率和氯化钠去除率显着增加。脂质含量随着盐度的增加而增加，但由于盐胁迫引起的生长抑制，脂质产量随着氯化钠添加量的增加而减少。最佳初始 NaCl 浓度尚未确定，但 4.8 g L-1 的初始 NaCl 浓度是可接受的处理浓度。在此条件下，脂质产量约为100 mg L-1，NaCl去除量达到1.0 g L-1。我们的结果表明，利用苦咸水同时实现生物脱盐和脂质生产是可能的。 (C) 2016 Elsevier B.V. 保留所有权利。
Brackish water is a good choice for algae cultivation in achieving simultaneous biological desalination and biodiesel production. Scenedesmus obliquus was cultured in BG-11 medium of varying salinities (1.2, 2.8, 4.8, 6.8 and 8.8 g L-1 NaCl) for 16 days. The growth rate decreased as salinity increased. The sedimentation efficiency (60 min) was almost the same (77%-83%) in all treatments except for algae treated with 8.8 g L-1 NaCl, the value of which was 54%. The highest lipid content of 21% was observed in the sample treated with 8.8 g L-1 NaCl compared with 16% in the control. The desalinization rate and removal of NaCl increased significantly as salinity rose. The lipid content increased with increasing salinity but lipid production decreased with increasing NaCl addition because of growth inhibition caused by salt stress. The optimum initial NaCl concentration was not confirmed but an initial NaCl concentration of 4.8 g L-1 is the acceptable concentration for the treatment. Under these conditions, lipid production was about 100 mg L-1 and the removal of NaCl reached 1.0 g L-1. Our results indicated that it is possible to achieve simultaneous biological desalination and lipid production using brackish water. (C) 2016 Elsevier B.V. All rights reserved.