Closed photobioreactors are ideal for the production of high-value and high-purity microalgal products. However, dissolved oxygen accumulation in closed reactors is detrimental to algal growth. A recently developed gas-permeable bag photobioreactor removes dissolved oxygen by diffusion through its reactor surface and enables energy-efficient aeration-less operation. In this study, the gas-permeable reactor was tested in continuous culture of Arthrospira platensis, and the results were used for energy estimation. The continuous culture of A. platensis reached high productivity of 2.0 g L⁻¹ d⁻¹, 28.9 g m⁻² d⁻¹, and 9.3 % photosynthetic efficiency under limited mixing and aeration. Although dissolved oxygen inhibition still occurred, productivity was up to 2-fold higher than that with a non-permeable bag reactor. The energy efficiency was 2 to 5 times higher than that with non-permeable reactors, and can be >98 % efficient than conventional operations with intensive mixing. This study demonstrated effective energy-efficient mass cultivation with the novel gas-permeable reactor.

封闭式光生物反应器是生产高价值和高纯度微藻产品的理想选择。然而，封闭反应器中溶解氧的积累不利于藻类生长。最近开发的透气袋光生物反应器通过其反应器表面扩散去除溶解氧，并实现节能无曝气操作。在这项研究中，透气反应器在钝顶节螺旋藻的连续培养中进行了测试，并将结果用于能量估算。A. platensis的连续培养达到了 2.0 g L ⁻¹  d ⁻¹ , 28.9 g m ⁻²  d ^{−1的高生产力}, 在有限的混合和通气条件下，光合效率为 9.3%。尽管溶解氧抑制仍然存在，但生产率比非渗透性袋式反应器高 2 倍。能源效率比非渗透性反应器高 2 至 5 倍，并且比使用密集混合的传统操作效率 >98%。这项研究证明了使用新型透气反应器进行有效的节能大规模培养。