School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou, 466001, China.
Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.
World J Microbiol Biotechnol. 2020 Jul 7;36(7):105. doi: 10.1007/s11274-020-02884-5.
With the increasing demand for energy, microalgae, as one of the promising feedstocks of biodiesel, has raised great awareness. Because of its small size, similar density to water and electrical stability, harvesting methods of microalgae that have low energy consumption and that are highly efficient, easy to large-scale and environmentally friendly have become a bottleneck restricting development of the whole process. Among the numerous possible harvesting methods, magnetic flocculation has the advantages of simple operation, fast separation and energy saving and thus is considered as a promising novel harvesting method. In this review, we have summarized the updated status and application potential of magnetic flocculation, including the principle of magnetic flocculation, magnetic flocculating materials, flocculating efficiency and its effect on downstream process. The major challenges such as magnetic materials recovery, large-scale magnetic flocculation device design, and magnetic flocculation costs are also discussed.
随着能源需求的不断增长，微藻作为生物柴油有前途的原料之一，引起了极大的关注。由于其体积小、密度与水相似且具有电稳定性，因此，具有低能耗、高效、易于大规模应用且环保的微藻收获方法已成为限制整个过程发展的瓶颈。在众多可能的收获方法中，磁絮凝具有操作简单、分离速度快、节能等优点，因此被认为是一种很有前途的新型收获方法。本综述总结了磁絮凝的最新现状和应用潜力，包括磁絮凝的原理、磁絮凝材料、絮凝效率及其对下游工艺的影响。还讨论了主要挑战，如磁性材料回收、大规模磁絮凝装置设计和磁絮凝成本等问题。
