Liu Zhiyong, Hao Nahui, Hou Yuyong, Wang Qing, Liu Qingling, Yan Suihao, Chen Fangjian, Zhao Lei
Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China.
Bioresour Technol. 2023 Nov;387:129631. doi: 10.1016/j.biortech.2023.129631. Epub 2023 Aug 5.
Microalgae are emerging as a promising source for augmenting the supply of essential products to meet global demands in an environmentally sustainable manner. Despite the potential benefits of microalgae in industry, the high energy consumption for harvesting remains a significant obstacle. This review offers a comprehensive overview of microalgae harvesting technologies and their industrial applications, with particular emphasis on the latest advances in flocculation techniques. These cutting-edge methods have been applied to biodiesel production, food and nutraceutical processing, and wastewater treatment. Large-scale harvesting is still severely impeded by the high cost despite progress has been made in laboratory studies. In the future, cost-effective microalgal harvesting will rely on efficient resource utilization, including the use of waste materials and the reuse of media and flocculants. Additionally, precise regulation of biological metabolism will be necessary to overcome algal species-related limitations through the development of extracellular polymeric substance-induced flocculation technology.
微藻正成为一种有前景的资源，有望以环境可持续的方式增加基本产品的供应，以满足全球需求。尽管微藻在工业上有潜在益处，但收获过程中的高能耗仍然是一个重大障碍。本文综述了微藻收获技术及其工业应用，特别强调了絮凝技术的最新进展。这些前沿方法已应用于生物柴油生产、食品和营养保健品加工以及废水处理。尽管实验室研究已取得进展，但大规模收获仍因成本高昂而受到严重阻碍。未来，具有成本效益的微藻收获将依赖于高效的资源利用，包括使用废料以及培养基和絮凝剂的再利用。此外，通过开发胞外聚合物诱导絮凝技术来精确调节生物代谢对于克服藻类物种相关的限制将是必要的。
