用管式光生物反应器培养螺旋藻的研究

微藻大规模培养主要有敞开式大池培养和封闭式光生物反应器培养两种主要方式。管式光生物反应器是封闭式光生物反应器的主要类型之一。与其它类型相比，管式光生物反应器放大较易，成本较低。国外关于管式光生物反应器已有不少研究［１～３］但关于管式光生物反应器产率与光强和光暗比的关系等方面的研究尚未得出明确的结论。国内管式光生物反应器的研究较少［４］，尚未见有关管式光生物反应器中微藻悬浮液流变特性基础参数和产率影响因素的报道。螺旋藻是丝状体蓝藻，螺旋藻蛋白质含量高，其蛋白质所含必需氨基酸丰富，是国内外大规模商业…

Studies on the Cultivation of Spirulina platensis in Tubular Photobioreactor

A tubular photobioreactor was constructed with glass tubing of 5 4mm bore. The high density culture of Spirulina platensis was tested and the biomass concentration had gained up to 12 4g/L. The research shows the photobioreactor productivity can be influenced significantly by incident light intensity and light/dark ratio. Along with the increasing of light/dark ratio, the productivity per culture volume increased at first, then the light/dark ratio saturation phenomenon occurred; and the productivity per illuminated area increased at first, after that it decreased. There is an optimum light/dark ratio, at which the productivity per illuminated area is optimized. The dynamic viscosity measurement of the culture liquid shows non Newtonian behavior and it can be described by power law equation.