School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Centre, Jinan 250014, China.
Bioresour Technol. 2023 Apr;373:128710. doi: 10.1016/j.biortech.2023.128710. Epub 2023 Feb 6.
In this study, computational fluid dynamics were employed to examined clockwise and anticlockwise vortexes in the rising and down coming sections of novel nested-bottle photobioreactor. The radial velocity was increased by four times which significantly reduced dead zones compared to traditional PBR. The (NB-PBR) comprised of integrated bottles connected by curved tubes (d = 4 cm) that generated dominant vortices as the microalgae solution flows through each section (h = 10 cm). The (NB-PBR) was independent of the inner and outer sections which increased the mixing time and mass-transfer coefficient by 13.33 % and 42.9 %, respectively. Furthermore, the results indicated that the (NB-PBR) showed higher photosynthesis efficiency preventing self-shading and photo-inhibition, resulting in an increase in biomass yield and carbon dioxide fixation by 35 % and 35.9 %, respectively.
在这项研究中，我们运用计算流体力学研究了新型嵌套瓶光生物反应器上升和下降段的顺时针和逆时针涡旋。与传统 PBR 相比，径向速度提高了四倍，显著减少了死区。（NB-PBR）由通过弯曲管（d=4 厘米）连接的集成瓶组成，当微藻溶液流经每个部分（h=10 厘米）时，会产生主要的涡旋。（NB-PBR）不依赖于内外部分，分别将混合时间和传质系数提高了 13.33%和 42.9%。此外，结果表明，（NB-PBR）显示出更高的光合作用效率，防止自遮蔽和光抑制，从而使生物量产量和二氧化碳固定分别增加了 35%和 35.9%。
