Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico.
CONACyT Research Fellow, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico.
Bioprocess Biosyst Eng. 2017 Dec;40(12):1733-1742. doi: 10.1007/s00449-017-1828-5. Epub 2017 Aug 11.
Microalgae are considered as a promising biotechnological strategy to capture CO from biogas, producing biomass with valuable energetic compounds. This study has evaluated the biotechnological potential to fix CO from biogas and biomass production by Scenedesmus obliquus cultured in four different formulations of culture media, C30, Bristol, Bold 3N, and C30+M, as well as the effect of methane (CH) of biogas during CO fixation and biomass production. The results obtained showed that different nutrient composition and concentration of culture media, mainly micronutrient and vitamin concentrations, induced different patterns of CO fixation from biogas and biomass production in S. obliquus. The highest CO fixation (23.03 ± 0.24%) and biomass production (4.63 ± 0.31 g L) were attained in the microalgae growing in C30+M medium, accumulating mainly proteins. Moreover, these results demonstrated that the CH of biogas did not affect CO fixation from biogas and biomass production by S. obliquus. Overall, these results demonstrated that a culture medium with a balanced nutrient supply is crucial to increasing the biotechnological potential of microalgae to fix CO from biogas.
微藻被认为是一种很有前途的生物技术策略，可以从沼气中捕获 CO，生产具有有价值的能量化合物的生物质。本研究评估了通过在 C30、Bristol、Bold 3N 和 C30+M 四种不同培养基配方中培养的斜生栅藻从沼气中固定 CO 和生产生物质的生物技术潜力，以及沼气中的甲烷（CH）在 CO 固定和生物质生产过程中的作用。结果表明，不同的营养成分和培养基浓度，主要是微量元素和维生素浓度，诱导斜生栅藻从沼气中不同的 CO 固定和生物质生产模式。在 C30+M 培养基中生长的微藻获得了最高的 CO 固定（23.03±0.24%）和生物质生产（4.63±0.31 g L），主要积累蛋白质。此外，这些结果表明，沼气中的 CH 不会影响斜生栅藻从沼气中固定 CO 和生产生物质。总的来说，这些结果表明，培养基中营养物质的均衡供应对于提高微藻从沼气中固定 CO 的生物技术潜力至关重要。
