Pilot-scale open-channel raceways and flat-panel photobioreactors maintain well-mixed conditions under a wide range of mixing energy inputs.,Biotechnology and Bioengineering

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Pilot-scale open-channel raceways and flat-panel photobioreactors maintain well-mixed conditions under a wide range of mixing energy inputs.
Biotechnology and Bioengineering ( IF 3.5 ) Pub Date : 2020-01-12 , DOI: 10.1002/bit.27268
Carlos Quiroz-Arita _{1,

2} , Myra L Blaylock ₁ , Patricia E Gharagozloo ₃ , David Bark ₂ , Lakshmi Prasad Dasi ₄ , Thomas H Bradley ₅

Affiliation

Turbulent mixing in pilot-scale cultivation systems influences the productivity of photoautotrophic cultures. We studied turbulent mixing by applying particle image velocimetry and acoustic doppler velocimetry to pilot-scale, flat-panel photobioreactor, and open-channel raceway. Mixing energy inputs were varied from 0.1 to 2.1 W·m-3 . The experimental results were used to quantify turbulence and to validate computational fluid dynamics models, from which Lagrangian representations of the fluid motion in these reactors were derived. The results of this investigation demonstrated that differences in mixing energy input do not significantly impact the structure of turbulence and the light/dark cycling frequencies experienced by photoautotrophic cells within the reactors. The experimental and computational results of our research demonstrated that well-mixed conditions exist in pilot-scale, flat-panel photobioreactors and open-channel raceways, even for relatively low mixing energy inputs.

中文翻译：

中试规模的明渠水道和平板光生物反应器在各种混合能量输入下都能保持良好的混合条件。

中试规模培养系统中的湍流混合影响光合自养培养的生产力。我们通过将粒子图像测速仪和声多普勒测速仪应用于中试规模，平板光生物反应器和明渠滚道，研究了湍流混合。混合能量输入在0.1到2.1 W·m-3之间变化。实验结果用于量化湍流并验证计算流体动力学模型，由此得出了这些反应堆中流体运动的拉格朗日表示。这项研究的结果表明，混合能量输入的差异不会显着影响湍流的结构以及反应堆内光自养细胞经历的明/暗循环频率。

更新日期：2020-03-09

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