在鼓泡式光生物反应器中户外培养小球藻时控制 CO₂ 输入条件。
Control of CO₂ input conditions during outdoor culture of Chlorella vulgaris in bubble column photobioreactors.
机构信息
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, Singapore.
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, Singapore.
出版信息
Bioresour Technol. 2015 Jun;186:238-245. doi: 10.1016/j.biortech.2015.03.065. Epub 2015 Mar 19.
A study on the optimization of CO2 usage during outdoor microalgae cultivation in order to further maximize the CO2 to biomass conversion efficiency is presented. A constant supply of CO2 was found to be non-essential for culturing microalgae outdoors in 80 L (8 L×10 sets) bubble columns. Among the different CO2 input conditions that were studied, 2% CO2 with intermittent supply and 2%+4% CO2 alternation did not affect the algal growth as compared to having a constant supply of 2% CO2. However, during both input conditions, the CO2 to biomass conversion efficiency was doubled while the amount of CO2 used was reduced by 50%. The algal biomass obtained was found to have a higher carbohydrate yield but a lower protein yield as compared to previously published studies. The findings from this study could be applied for large-scale microalgae production so as to minimize cultivation and energy costs.
本文研究了在户外培养微藻时优化 CO2 使用的方法，旨在进一步提高 CO2 到生物质的转换效率。研究发现，在 80L（8L×10 组）的气泡柱中，户外培养微藻不需要持续供应 CO2。在研究的不同 CO2 输入条件中，与持续供应 2%CO2 相比，间歇性供应 2%CO2 和 2%+4%CO2 交替供应并不影响藻类生长。然而，在这两种输入条件下，CO2 到生物质的转换效率提高了一倍，而 CO2 的使用量减少了 50%。与之前发表的研究相比，所得的藻类生物质具有更高的碳水化合物产率，但蛋白质产率较低。本研究的结果可应用于大规模微藻生产，以最大限度地降低培养和能源成本。
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