School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China.
Bioresour Technol. 2023 Sep;383:129195. doi: 10.1016/j.biortech.2023.129195. Epub 2023 May 18.
Microalgae-based Carbon Capture, Utilization and Storage is vital for mitigating global climate change. A filled sphere carrier reactor was developed to achieve high biomass production and carbon sequestration rate of Chlorella pyrenoidosa. By introducing air (0.04% CO) into the reactor, the dry biomass production achieved 8.26 g/L with the optimized parameters of polyester carrier, 80% packing density, 5-fold concentrated nutrient combining 0.2 mol/L phosphate buffer. At simulated flue gas CO concentration of 7%, the dry biomass yield and carbon sequestration rate reached up to 9.98 g/L and 18.32 g/L/d in one day, which were as high as 249.5 and 79.65 times comparing with those of suspension culture at day 1, respectively. The mechanism was mainly attributed to the obvious intensification of electron transfer rate and remarkable increase of RuBisCO enzyme activity in the photosynthetic chloroplast matrix. This work provided a novel approach for potential microalgae-based carbon capture and storage.
基于微藻的碳捕获、利用和封存对于缓解全球气候变化至关重要。开发了一种填充球载体反应器，以实现小球藻生物质产量和碳捕集率的提高。通过向反应器中引入空气（0.04% CO），在优化聚酯载体、80%填充密度、5 倍浓缩营养物（结合 0.2 mol/L 磷酸盐缓冲液）的条件下，实现了 8.26 g/L 的干生物质产量。在模拟烟气 CO 浓度为 7%的条件下，小球藻在一天内的干生物质产量和碳捕集率分别达到了 9.98 g/L 和 18.32 g/L/d，与第 1 天悬浮培养相比，分别高达 249.5 和 79.65 倍。其主要机制归因于电子传递速率的明显增强和光合叶绿体基质中 RuBisCO 酶活性的显著增加。这项工作为基于微藻的潜在碳捕获和封存提供了一种新方法。
