串行灯笼形导流管增强闪光效果，提高气升环流柱光生物反应器中微藻固定 CO2 的能力。
Serial lantern-shaped draft tube enhanced flashing light effect for improving CO fixation with microalgae in a gas-lift circumflux column photobioreactor.
机构信息
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
出版信息
Bioresour Technol. 2018 May;255:156-162. doi: 10.1016/j.biortech.2018.01.127. Epub 2018 Jan 31.
A novel serial lantern-shaped draft tube (LDT) that generates vortices is proposed to increase radial velocity between dark and light regions for improving CO fixation with microalgae in a gas-lift circumflux column (GCC) photobioreactor. Clockwise vortices are generated in the downflow outerloop of the GCC photobioreactor with LDT. Radial velocity was improved from 1.50 to 4.35 × 10 m/s, thereby decreased liquid cycle period between dark and light regions by 1.9 times. Mixing time decreased by 21%, and mass transfer coefficient increased by 26% with LDT. Liquid radial velocity in the downflow outerloop and mass transfer coefficient in the GCC photobioreactor both first increased and then decreased when single-lantern height was increased. Peak CO fixation rate increased from 0.62 to 0.87 g/L/d, microalgal biomass yield increased by 50%. Removal efficiencies of pollutants (chemical oxygen demand, ammonium, tilmicosin, and ethinylestradiol) in wastewater were 62-90% with microalgae growth in GCC photobioreactor with LDT.
一种新型串联灯笼形导气管（LDT）产生涡流，以增加明暗区域之间的径向速度，从而提高气升环流柱（GCC）光生物反应器中微藻的 CO 固定率。在带有 LDT 的 GCC 光生物反应器的下降外环流中产生顺时针涡流。径向速度从 1.50 提高到 4.35×10 m/s，从而将明暗区域之间的液体循环周期缩短了 1.9 倍。混合时间减少了 21%，传质系数增加了 26%。当单灯笼高度增加时，下降外环流中的液体径向速度和 GCC 光生物反应器中的传质系数均先增加后减少。带有 LDT 的 GCC 光生物反应器中微藻生长时，CO 固定率从 0.62 提高到 0.87 g/L/d，微藻生物量增加了 50%。在 GCC 光生物反应器中使用微藻生长时，废水中的污染物（化学需氧量、氨、替米考星和乙炔雌二醇）的去除效率为 62-90%。
Zotero 插件