Institute of Northern Engineering, University of Alaska Fairbanks, 306 Tanana Drive, Duckering Building, Fairbanks, AK 99775, USA.
Bioresour Technol. 2013 Oct;146:70-81. doi: 10.1016/j.biortech.2013.07.042. Epub 2013 Jul 17.
Hydrogen productions through biophotolysis by microalgae in photobioreactors (PBRs) were studied using a computational model integrated with fluid dynamics, particle tracking technique, light attenuation dynamics, biochemical kinetics, and mass transport. The trajectories of microalgae entrained in the flow fields within these PBRs were traced by the particle tracking technique and were used to determine the dynamics of light attenuation subjected by the cells, which were analyzed and compared with those obtained from the unstirred PBR under different incident light illuminations. The results show an improvement on the light penetration depth in the mechanically stirred cultures. The dynamics of light attenuation was incorporated into the kinetics equations for the analysis of the inhomogeneous biochemical process for hydrogen production by microalgae. Hydrogen production in the unstirred and the impeller-stirred PBRs were determined under different light illumination conditions and the results show an improvement on hydrogen production in the impeller-stirred PBRs.
利用一种将流体动力学、粒子追踪技术、光衰减动力学、生化动力学和质量传输相结合的计算模型，对光合生物反应器（PBR）中微藻的生物光解产氢进行了研究。通过粒子追踪技术追踪在这些 PBR 内流场中夹带的微藻的轨迹，并用于确定细胞所受的光衰减动力学，将其与不同入射光照明下未搅拌 PBR 获得的数据进行了分析和比较。结果表明，机械搅拌培养物中的光穿透深度得到了改善。将光衰减动力学纳入微藻产氢的非均相生化过程的动力学方程中进行分析。在不同的光照条件下，在未搅拌和叶轮搅拌的 PBR 中确定了产氢情况，结果表明叶轮搅拌的 PBR 中的产氢情况得到了改善。
