Enhanced photo bio-reaction by multiscale bubbles
Enhanced photo bio-reaction by multiscale bubbles
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DOI：
10.1016/j.cej.2018.06.019
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发表时间：
2018-12
影响因子：
15.1
通讯作者：
Luhaibo Zhao;Min Lv;Z. Tang;T. Tang;Ying Shan;Zhicheng Pan;Yuhan Sun
中科院分区：
文献类型：
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作者：
Luhaibo Zhao;Min Lv;Z. Tang;T. Tang;Ying Shan;Zhicheng Pan;Yuhan Sun
Based on experimental and computational fluid dynamics simulations, the scale effect between the bubbles and the algae for different sizes in the culture process were investigated in a photobioreactor column under single and combined gas intake conditions, including factors such as the bubble distribution, gas holdup and mass transfer coefficient of different scale bubbles (500 μm microbubbles and 5 mm bubbles). In general, microbubbles could improve mass transfer and photo bio-reaction. For microalgae cultures with large particle sizes or high biomass concentration, the mixing ability of microbubbles was weakened, and therefore, the culture efficiency decreased. However, this can be improved by using millimeter bubbles with the strong turbulent characteristic. Therefore, a multiscale bubble combination intake method was proposed. This method can significantly strengthen both the multiphase mixture and mass transfer processes and was beneficial to improving the growth efficiency of Chlorella.
