微藻采收方法的研究进展

Research progress in harvesting microalgae — a review

摘要:

微藻的生产过程可以实现能源生产、废水净化和CO2减排的高度耦合，在能源危机日益紧张、环境问题日趋严峻的今天，微藻的开发利用具有重要的研究价值和经济、社会效益。制约微藻产业化的瓶颈问题是采收成本过高，一种经济合理的采收方法不但可以大大降低生产成本，还可以奠定微藻产业化发展的基础。本文对目前应用较为普遍的微藻采收方法进行了介绍，重点阐述了絮凝法采收微藻，以期对微藻的低成本高效率采收以及产业化发展提供帮助。

Abstract:

Microalgae have been considered as promising candidates in integrating CO2 mitigation, nutrients degradation in water systems, and energy capture from sunlight. Therefore, it is important for sustainable development via acceleration of microalgae research to address the problems of environmental pollution and energy shortage. However, high cost in biomass recovery is the major bottleneck in microalgal-based industrial applications, and a cost-effective method in microalgal biomass recovery is the key to this issue. Here, we reviewed the methods for microalgae harvesting, including sedimentation, centrifugation, filtration and flocculation. Among these methods, the progress and prospect in flocculation are especially focused so that to propose options for the cost-effective biomass recovery and microalgal industrialization.