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Power-saving airlift bioreactor with helical sieve plates: Developmental and performance studies
Chemical Engineering Research and Design ( IF 3.7 ) Pub Date : 2020-03-19 , DOI: 10.1016/j.cherd.2020.03.014
Xiang Li , Yuqi Chen , Zhiyong Zheng , Minjie Gao , Zifan Wang , Kaining Zhang , He Liu , Xiaobei Zhan

This study investigated the influence of the geometry of the draft tube on the mass transfer and energy efficiency in the airlift reactor with helical sieve plate (ALR-HSP). The power consumption efficiency was 46%–53% higher than the control condition by optimizing the draft tube. A set of empirical equations was used to describe the gas holdup and volumetric mass transfer coefficients corresponding to the geometry of draft tubes in the ALR-HSP for the water–air system. The comparative cultivation of Pichia pastoris was carried out using the ALR-HSP and the conventional airlift reactor (CALR). The biomass increased by 20%, the maximal specific growth rate during the logarithmic growth phase nearly doubled, and volumetric oxygen transfer coefficient increased by 21%–47% under the same culture conditions. Results preliminarily demonstrated the superior performance and practicability of the ALR-HSP in enhancing oxygen transfer efficiency and aerobic biological reaction efficiency.



中文翻译:

带有螺旋筛板的节能型空运生物反应器:开发和性能研究

这项研究调查了引流管的几何形状对带有螺旋筛板(ALR-HSP)的气举反应堆中传质和能量效率的影响。通过优化引流管,功耗效率比控制条件高46%–53%。使用一组经验方程式来描述与水-空气系统的ALR-HSP中的导流管几何形状相对应的气体滞留率和体积传质系数。毕赤酵母的比较栽培使用ALR-HSP和常规的空运反应堆(CALR)进行。在相同的培养条件下,生物量增加了20%,对数生长期的最大比生长几乎翻了一倍,而体积氧转移系数增加了21%至47%。结果初步证明了ALR-HSP在提高氧气转移效率和有氧生物反应效率方面的优越性能和实用性。

更新日期:2020-03-19
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