Li Tong, Strous Marc, Melkonian Michael
Microsensor Group, Max-Panck-Institute for Marine Microbiology, Celsius Str. 1, 28359 Bremen, Germany.
Botanical Institute, University of Cologne, Zülpicher Str. 47 b, 50674 Cologne, Germany.
FEMS Microbiol Lett. 2017 Dec 29;364(24). doi: 10.1093/femsle/fnx218.
The potential of biofilm-based photobioreactors (PBRs) for various applications has long been recognized, and various types of biofilm-based PBRs have been developed for different applications. Compared to suspension-based PBR reactors, biofilm-based systems offer several advantages, including a significantly higher biomass concentration. However, due to the immobilization of the cells, in contrast to suspension-based systems, dissolved inorganic carbon (DIC) has to be transferred into the biofilm for consumption. Thus, to ensure efficient operation of these systems under a given lighting scheme (e.g. depending on geographical location), availability of DIC should be optimized. To achieve this, the dynamics of DIC inside the various biofilm-based PBRs, as well as the operational principles of these PBRs, need to be understood. The mini-review summarizes the designs of existing biofilm-based PBRs and reviews previous studies on DIC dynamics in various biofilms. Strategies to enhance DIC availability for the immobilized cells in biofilm-based PBRs are also discussed.
基于生物膜的光生物反应器（PBR）在各种应用中的潜力早已得到认可，并且已经针对不同应用开发了各种类型的基于生物膜的PBR。与基于悬浮液的PBR反应器相比，基于生物膜的系统具有多个优点，包括显著更高的生物质浓度。然而，由于细胞的固定化，与基于悬浮液的系统相比，溶解无机碳（DIC）必须转移到生物膜中以供消耗。因此，为确保这些系统在给定光照方案下（例如取决于地理位置）的高效运行，应优化DIC的可用性。要实现这一点，需要了解各种基于生物膜的PBR内DIC的动态以及这些PBR的运行原理。本综述总结了现有基于生物膜的PBR的设计，并回顾了先前关于各种生物膜中DIC动态的研究。还讨论了提高基于生物膜的PBR中固定化细胞的DIC可用性的策略。
