CO_2 fixation system using microalgae under aerial conditions

有些微藻即使在固体表面也能进行光合作用。构建了皮带输送系统，利用皮带上的微藻固定大气中的CO_2。即使在玻璃纤维滤膜上，小球藻、衣藻、紫球藻、螺旋藻和聚球藻仍然很活跃。尽管该系统是半自动工作的，但由于干燥的风，藻类细胞很快就在室外干燥了。因此，我仍然在寻找一种合适的透明薄膜，它将覆盖在腰带上的藻类上。如果CO_2和O_2分子可以转移，而H_2O分子不能转移，则膜的性能会更好。利用红外气体分析仪对膜上的微藻进行了光合作用速率的实时测定。螺旋藻的光合作用速率在光照后需要15min以上才能达到稳定水平，而小球藻的光合作用速率很快就达到了稳定水平。研究还发现，类囊体膜中的酸性脂类起到维持光系统II蛋白复合体的作用。

Some of microalgae can proceed photosynthesis even on a solid surface. I constructed a belt conveyor system with which microalgae on the belt fix CO_2 from atmosphere. Chlorella, Chlamydomonas, Porphyridium, Spirulina, and Synechocystis were still active even on a membrane of glass-fiber filter. Though the system worked semi-automatically, the algal cells dried soon outdoors due to dried wind. Thus I am still looking for an appropriate transparent film which would be laid over the algae on the belt. The film should be better if molecules of CO_2 and O_2 can be transferable, but not H_2O.Infrared gas analysing system with which rate of photosynthesis is determined at real time was applied to the microalgae on the membrane. It took over 15 min in Spirulina till the rate of photosynthesis reached the stationary level after illumination, while it was very soon in Chlorella. It is also found that acid lipids in thylakoid membranes play a role of maintenance of photosystem II protein complex.