微藻气肥光生物反应器研究进展

Progress of Air Fertilizer Photobioreactor of Microalgae

利用微藻吸收工业废气中高浓度的CO2不仅可以显著增加微藻的生物量和油脂产量,还可以达到碳减排的目的,但是CO2在水体中溶解度较低一直是微藻利用高浓度CO2的瓶颈。探讨了CO2气肥耦联的微藻培养光生物反应器,着重阐述了两类气肥光生物反应器,即液体培养和半干固态培养光生物反应器,在CO2气源供应与利用上所做的改进和特点,详细比较了二者的装置特性、生物学特性、供气特点以及生产性能,为光自养微藻的高密度培养提供参考。

Microalgae can utilize the high-dose CO2 in the flue gases,through which the biomass and oil content of microalgae were improved significantly and carbon emission was also reduced.However,the low solubility of carbon dioxide in water has been the bottleneck of high-dose CO2 utilization by microalgae.This article addressed CO2 fertilizer coupled to microalgal photobioreactors,discussed particularly the improvement and characteristic of two types of photobioreactors fed with high-dose CO2,that is,liquid or attached cultivation photobioreactors,with focus on the CO2 mass transfer and utilization.To summarize,the features of two photobioreactors,capacities of microalgal utilization of high-dose CO2,as well as CO2 mass transfer characteristics were compared and commented,which might help to the high density cultivating of microalgae.