光生物反应器内流动、辐射和光生化反应协同机理的研究

One of the key issues that should be treated urgently is to design an efficient photobioreactor(PBR) for the cultivation of microalgae with high density at large scale. However, the design and scale-up of a PBR are blind to a certain extent at the present stage, manily due to the confusion of the synergetic mechanism of fluid flow, radiation and growth kinetics, especially the lack of sufficient research on the influence of the fluid flow and radiation to the microagale growth. In view of the multi-field synergetic transfer in the PBRs, the fluid flow and the photobioreaction are proposed to be combined in this project, and an integrated model including the fluid flow, radiation and growth kinetics of microalgae will be set up, solved and verified. The synergetic transfer mechanisms will be investigated, and the effects of the geometric and operating parameters on growth kinetics will be analyzed. In addition, the quantitative relationship between the flow, radiation and cell growth dynamics will be determined, and the synergetic mechanism among them will be revealed. The developed methods will be utilized to look for efficient ways to promote the performance of the newly designed PBR.

构建适合于微藻生长的光生物反应器是实现微藻高密度和规模化培养亟待解决的关键问题之一。由于对光生物反应器内流体流动、光辐射和微藻生长速率之间协同作用的机理不清楚，尤其缺乏流场和辐射场对微藻生长速率影响的研究，现阶段光生物反应器的设计和放大存在着一定的盲目性。本项目针对光生物反应器内的多场协同传递过程进行研究，将流体流动和微藻的光生化反应相结合，建立、求解、验证包含流体流动、光辐射和微藻生长的集成数学模型，研究其多场协同传递机理，分析结构和操作参数对反应器性能的影响，确定流体流动、光辐射和微藻生长速率之间的定量关系，揭示其协同作用机理，从而进一步寻求提高反应器性能的方法。