在带有旋摆式气体曝气器的跑道池中用小气泡提高微藻生长。
Improving microalgal growth with small bubbles in a raceway pond with swing gas aerators.
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. 2016 Sep;216:267-72. doi: 10.1016/j.biortech.2016.05.076. Epub 2016 May 21.
A novel swing gas aerator was developed to generate small bubbles for improving the mass transfer coefficient and microalgal growth rate in a raceway pond. A high-speed photography system (HSP) was used to measure the bubble diameter and generation time, and online precise dissolved oxygen probes and pH probes were used to measure the mass transfer coefficient and mixing time. Bubble generation time and diameter decreased by 21% and 9%, respectively, when rubber gas aerators were swung in the microalgae solution. When water pump power and gas aeration rate increased in a raceway pond with swing gas aerators and oscillating baffles (SGAOB), bubble generation time and diameter decreased but solution velocity and mass transfer coefficient increased. The mass transfer coefficient increased by 25% and the solution velocity increased by 11% when SGAOB was used, and the microalgal biomass yield increased by 18%.
一种新型的摆动式射流气体增氧机被开发出来，用于产生小气泡，以提高养殖池中的传质系数和微藻生长速率。高速摄影系统（HSP）用于测量气泡直径和生成时间，在线精确溶解氧探头和 pH 探头用于测量传质系数和混合时间。当橡胶气体增氧机在微藻溶液中摆动时，气泡生成时间和直径分别减少了 21%和 9%。当在带有摆动式射流气体增氧机和振荡挡板（SGAOB）的养殖池增加水泵功率和气流量时，气泡生成时间和直径减小，但溶液速度和传质系数增加。使用 SGAOB 时，传质系数增加了 25%，溶液速度增加了 11%，微藻生物量产量增加了 18%。
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