平板式光生物反应器培养液混合强度对螺旋藻生长的影响

Influence of the Mixing Intensity on the Spirulina platensis Flat-plate Photo-bioreactor Culturing

目的:探讨平板式光生物反应器内培养液混合对螺旋藻生长的影响规律。方法:在平板式光生物反应器中进行钝顶螺旋藻(Spirulina platensis)户内和户外培养,通过改变通入反应器内气体的流量来控制培养液的混合强度,测定藻细胞的面积产量和叶绿素含量。结果:在一定的混合强度范围内,藻细胞的面积产量随着混合强度的增加而增加;室内培养时,混合强度的改变不会影响藻细胞的光合反应特性,户外高密度培养时,培养液混合强度的改变会造成藻细胞光合反应特性的变化。结论:强化培养液的混合可以提高螺旋藻产量。

Objective：The purpose was to investigate the effects of mixing intensity on the alga growth. Method：Spirulina platensis was cultured in the flat plate photo-bioreactors both indoors and outdoors, and the mixing intensity was controlled through air aeration into the photo-bioreactor, the alga growth areal yield and chlorophyll content under different mixing intensity were measured. [ Result ] Results showed that the alga growth yield increased with the mixing intensity increasing; the physiological characteristic was not influenced by the mixing intensity when the alga was cultured indoors, while it was influenced by the mixing under the outdoor condition. Conclusion： To intensify the culture liquor mixing can effectively enhance the alga yield.