Kubar Ameer Ali, Mehmood Shahid, Schagerl Michael, Kumar Santosh, Hu Xinjuan, Zhu Feifei, Xu Xiangru, Ni Jiheng, Huo Shuhao
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China.
Biotechnol Biofuels Bioprod. 2025 Jul 2;18(1):67. doi: 10.1186/s13068-025-02670-1.
This study introduces a novel hybrid photobioreactor system that integrates an open raceway pond (ORWP) with a Nested-bottled photobioreactor (NB-PBR) in a closed-loop configuration to enhance microalgal biomass production and CO₂ fixation. The system facilitates continuous culture circulation, improving mass transfer and mixing efficiency while ensuring optimal light exposure and CO₂ dissolution. This design resulted in a 38% increase in dry mass (3.1 g/L) and improved mass transfer and mixing times by 16.6% and 15.3%, respectively. The optimized cultivation conditions led to a 39.9% enhancement in CO₂ fixation and an 8.7% increase in photosynthetic efficiency (Fv/Fm) compared to traditional systems. The strategic movement of poorly illuminated ORWP to the NB-PBR maximized light absorption and nutrient uptake, significantly boosting overall productivity. These findings highlight the potential of hybrid photobioreactor systems in improving microalgal growth efficiency and advancing sustainable algal cultivation for commercial applications.
本研究介绍了一种新型混合光生物反应器系统，该系统将开放式跑道池塘（ORWP）与嵌套瓶式光生物反应器（NB-PBR）以闭环配置集成在一起，以提高微藻生物量产量和二氧化碳固定能力。该系统促进了连续培养循环，提高了传质和混合效率，同时确保了最佳的光照和二氧化碳溶解。这种设计使干重增加了38%（达到3.1克/升），传质和混合时间分别提高了16.6%和15.3%。与传统系统相比，优化后的培养条件使二氧化碳固定能力提高了39.9%，光合效率（Fv/Fm）提高了8.7%。将光照不足的ORWP战略性地转移到NB-PBR中，最大限度地提高了光吸收和养分吸收，显著提高了整体生产力。这些发现突出了混合光生物反应器系统在提高微藻生长效率和推进商业应用的可持续藻类培养方面的潜力。
