]*>","")" /> Studies on the Growth Characteristics and Dynamic Model of Spirulina Under Continuous Culture Conditions

J Integr Plant Biol ›› 2001, Vol. 43 ›› Issue (12): 1233-1236.

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Studies on the Growth Characteristics and Dynamic Model of Spirulina Under Continuous Culture Conditions

ZENG Wen-Lu, LI Hao-Ran, CONG Wei, CAI Zhao-Ling and OUYANG Fan   

  • 发布日期:2001-12-15

Studies on the Growth Characteristics and Dynamic Model of Spirulina Under Continuous Culture Conditions

ZENG Wen-Lu, LI Hao-Ran, CONG Wei, CAI Zhao-Ling and OUYANG Fan   

  • Published:2001-12-15

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Abstract:

The growth behavior, photosynthetic productivity and carbon utilizing characteristics of filamentous cyanobacterium Spirulina platensis Geitler were investigated in continuous cultures in a 10 L internalloop airlift photobioreactor. It was found that the cell density and the amount of carbon in the reactor increased and decreased with dilution rate respectively, and the relationships among them could well be expressed by the modified Monod equation. When dilution rate was 0.45/d, the rate of cell growth and that of carbon assumption reached their maximum points 0.362 g/(L·d) and 0.177 g/(L·d) respectively. The cell growth yield against carbon was 2.050 g/g. The proposed model of continuous growth fitted the experimental data quite well.

螺旋藻连续培养与动力学模型
曾文炉*  李浩然 丛威 蔡昭铃 欧阳藩
（中国科学院过程工程研究所生化工程国家重点实验室，北京100080）

摘要：在内循环气升式光生物反应器中,研究了钝顶螺旋藻(Spirulina platensis Geitler)细胞的连续生长及其对碳源底物的利用特性.结果表明:随着稀释率的增大,反应器中碳源浓度和细胞浓度分别呈上升和下降趋势,它们之间的关系可用Monod类型的方程很好地加以关联.细胞产率和碳消耗速率与稀释率的关系存在峰值现象:在本实验条件下,最大细胞产率为0.362 g/(L*d),最大碳消耗速率为0.177 g/(L*d),此时稀释率为0.45/d,细胞浓度为OD560=1.282,细胞对碳的得率系数为2.050 g/g.所提出的连续培养动力学模型与实验数据拟合较好.
关键词： 钝顶螺旋藻；光生物反应器；连续培养；动力学；得率系数

Key words: Spirulina platensis , photobioreactor, continuous culture, kinetics, yield coefficient

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