Enhancing CO2 utilization by a physical absorption-based technique in microalgae culture

被引:0
|
作者
Zhong-Liang Sun
Meng-Ru Xin
Ping Li
Li-Qin Sun
Shi-Kai Wang
机构
[1] Yantai University,College of Life Sciences
[2] Yangzhou University,Joint International Research Laboratory of Agriculture & Agri
来源
Bioprocess and Biosystems Engineering | 2021年 / 44卷
关键词
Microalgae; CO; utilization; Physical absorption enhancer; Mass transfer; Lipid;
D O I
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学科分类号
摘要
Carbon dioxide supplementation is significant for cell growth in autotrophic cultures of microalgae. However, the CO2 utilization efficiency is quite low in most processes. Aimed at this problem, six kinds of physical absorption enhancers were investigated to enhance the biological carbon sequestration of microalgae. By the addition of a small amount of CO2 absorption enhancer, the total inorganic carbon concentration of the medium was significantly increased. In addition, the biomass productivity of Scenedesmus dimorphus was maximally increased by 63% by the addition of propylene carbonate in flask cultures. In cultures using an air-lift photobioreactor equipped with a pH-feedback control system to supply CO2, the CO2 consumption was maximally reduced by 71% with added polyethylene glycol dimethyl ether. This study indicates that the incorporation of physical absorption enhancers could be a promising approach to overcome the problems of low CO2 utilization efficiency and high carbon source cost in algal biomass production.
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页码:1901 / 1912
页数:11
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