School of Bioengineering, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China.
School of Bioengineering, Dalian University of Technology, Dalian 116024, China.
Bioresour Technol. 2019 Dec;293:122018. doi: 10.1016/j.biortech.2019.122018. Epub 2019 Aug 19.
This study aimed to use floating photobioreactor (PBR) to produce microalgae biomass for aquaculture applications, and this was tested with cultivation of Isochrysis zhangjiangensis. The highest cell density of 16.1 ± 0.61 × 10 cell L was obtained in an outdoor culture with a depth of 5.0 cm in 1.0 m floating PBR, but deeper culture resulted in higher biomass productivity. Large-scale cultivation at size of 10 m (1000 L) produced the highest cell density of 17.8 × 10 cell L and highest biomass productivity of 0.115 g L d, which was at the same level as that for flat-panel PBR (100 L). This developed technique provides an innovative approach to produce microalgae on site for use as fresh aquaculture feed, as well as fresh cells for use as seed inoculums for large-area aquaculture water bodies. This approach provides not only a low-cost microalgae production system but also better integration between microalgae production and aquaculture.
本研究旨在利用漂浮式光生物反应器（PBR）生产微藻生物质，用于水产养殖应用，并以中肋骨条藻（Isochrysis zhangjiangensis）的培养为例进行了测试。在深度为 5.0cm 的 1.0m 漂浮式 PBR 进行户外培养时，可获得最高的细胞密度 16.1±0.61×10 个细胞/L，但更深的培养可获得更高的生物量生产力。在 10m（1000L）的大规模培养中，可获得最高的细胞密度 17.8×10 个细胞/L 和最高的生物量生产力 0.115g/L/d，与平板式 PBR（100L）相当。这项开发的技术为现场生产微藻提供了一种创新方法，可作为新鲜水产养殖饲料使用，也可作为大面积水产养殖水体的新鲜细胞接种物使用。这种方法不仅提供了低成本的微藻生产系统，而且还更好地将微藻生产与水产养殖结合在一起。
