Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, Brazil.
Department of Bromatological Analysis, College of Pharmacy, Federal University of Bahia, Salvador, Brazil.
Bioresour Technol. 2020 Sep;311:123495. doi: 10.1016/j.biortech.2020.123495. Epub 2020 May 7.
This study aimed to evaluate the biomass production of Spirulina sp. LEB 18 cultivated in wastewater from the desalination process. The outdoor cultivations (210 L) were performed using as culture medium 100% wastewater supplemented with 25% of Zarrouk constituents (Tcs). In parallel, it was performed a control assay using 100% Zarrouk constituents. The biomass production in Tcs assay (1.14 g L) was only 9% lower than the control assay (1.25 g L). The Tcs assay showed a higher content of carbohydrates (52.29%), lipids (12.79%) and ash (2.69%) compared to the control assay (47.91; 7.59 and 1.29%, respectively). The biomass from the control and Tcs assays had mostly monounsaturated fatty acids C15:1 and C18:2n6t. The Spirulina sp. LEB 18 could use efficiently the nutrients from the wastewater, showing high removal efficiency of NO (96.99%), PO (83.11%) and Z (96.43%). At the same time, high added value biomolecules were produced for different purposes.
本研究旨在评估在海水淡化过程废水培养的螺旋藻 LEB 18 的生物量生产。采用室外培养（210 L），使用 100%废水补充 25% Zarrouk 成分（Tcs）作为培养基。同时，进行了使用 100% Zarrouk 成分的对照试验。Tcs 试验中的生物量生产（1.14 g/L）仅比对照试验（1.25 g/L）低 9%。与对照试验（分别为 47.91、7.59 和 1.29%）相比，Tcs 试验显示出更高的碳水化合物（52.29%）、脂质（12.79%）和灰分（2.69%）含量。对照和 Tcs 试验的生物质主要含有单不饱和脂肪酸 C15:1 和 C18:2n6t。螺旋藻 LEB 18 可以有效地利用废水中的营养物质，对 NO（96.99%）、PO（83.11%）和 Z（96.43%）具有很高的去除效率。同时，为了不同的目的，生产了高附加值的生物分子。
