Integrated hybrid Nested-bottled photobioreactor for enhanced mixing, mass transfer, and CO₂ fixation in Arthrospira platensis raceway pond cultivation systems

IF 6.1 1区工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biotechnology for Biofuels Pub Date : 2025-07-02 DOI:10.1186/s13068-025-02670-1

Ameer Ali Kubar, Shahid Mehmood, Michael Schagerl, Santosh Kumar, Xinjuan Hu, Feifei Zhu, Xiangru Xu, Jiheng Ni, Shuhao Huo

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Abstract

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.

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在平节螺旋藻回旋池养殖系统中增强混合、传质和CO 2固定的集成杂交巢瓶光生物反应器。

本研究介绍了一种新型的混合光生物反应器系统，该系统将开放式沟道池（ORWP）与巢式瓶装光生物反应器（NB-PBR）集成在闭环配置中，以提高微藻生物量生产和CO 2固定。该系统促进连续培养循环，提高传质和混合效率，同时确保最佳的光照和CO₂溶解。该设计使干质量增加38% (3.1 g/L)，传质和混合时间分别提高16.6%和15.3%。与传统栽培体系相比，优化后的栽培体系co2固着力提高了39.9%，光合效率（Fv/Fm）提高了8.7%。光照不足的ORWP向NB-PBR的策略性移动最大化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可持续藻类培养商业化应用方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biotechnology for Biofuels 工程技术-生物工程与应用微生物

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Biotechnology for Biofuels is an open access peer-reviewed journal featuring high-quality studies describing technological and operational advances in the production of biofuels, chemicals and other bioproducts. The journal emphasizes understanding and advancing the application of biotechnology and synergistic operations to improve plants and biological conversion systems for the biological production of these products from biomass, intermediates derived from biomass, or CO2, as well as upstream or downstream operations that are integral to biological conversion of biomass. Biotechnology for Biofuels focuses on the following areas: • Development of terrestrial plant feedstocks • Development of algal feedstocks • Biomass pretreatment, fractionation and extraction for biological conversion • Enzyme engineering, production and analysis • Bacterial genetics, physiology and metabolic engineering • Fungal/yeast genetics, physiology and metabolic engineering • Fermentation, biocatalytic conversion and reaction dynamics • Biological production of chemicals and bioproducts from biomass • Anaerobic digestion, biohydrogen and bioelectricity • Bioprocess integration, techno-economic analysis, modelling and policy • Life cycle assessment and environmental impact analysis