正渗透工艺用于微藻生物燃料脱水的研究进展

Research progress in dewatering of microalgae biofuels using forward osmosis process

微藻作为第三代生物能源,在应对传统能源危机方面具有十分巨大的发展潜力。由于微藻脱水能耗巨大,导致后续的微藻生物燃料制备难以实现大规模商业化生产.针对此瓶颈问题,研究人员尝试采用正渗透工艺进行微藻脱水.基于近年来正渗透技术应用于微藻脱水的研究现状,综述了膜污染成因与控制、膜材料开发与膜结构优化、工艺节能增效等方面的研究进展,着重总结了在藻种、正渗透膜以及汲取液等明显影响微藻脱水性能因素方面的研究成果,并指出了未来采用正渗透技术进行微藻脱水的发展趋势.

Microalgae,as the third generation of bioenergy,has great development potential in dealing with the traditional energy crisis.Because of the huge energy consumption of microalgae dewatering,it is difficult to realize large-scale commercial production in the subsequent preparation of microalgae biofuel.In order to solve this bottleneck problem,researchers tried to use forward osmosis(FO)process to dewatering microalgae.Based on the research status of FO technology in microalgae dewatering in recent years,this paper summarizes the research progress in the causes and control of membrane fouling,the development of membrane materials and the optimization of membrane structure,and the energy saving and efficiency improvement of the process.The main aspects involving the dewatering performance,such as algae species,FO membrane and DS,are summarized.Finally,the development trends of FO technology in microalgae dewatering in the future are put forward.