School of Energy Science and Engineering, Central South University, Changsha 410083, China.
Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China.
Bioresour Technol. 2021 Jun;330:125008. doi: 10.1016/j.biortech.2021.125008. Epub 2021 Mar 17.
The treatment of wastewater by microalgae has been studied and proved to be effective through previous studies. Due to the small size of microalgae, how to efficiently harvest microalgae from wastewater is a crucial factor restricting the development of algal technologies. Fungi-assisted microalgae bio-flocculation for microalgae harvesting and wastewater treatment simultaneously, which was overlooked previously, has attracted increasing attention in the recent decade due to its low cost and high efficiency. This review found that fungal hyphae and microalgae can stick together due to electrostatic neutralization, surface protein interaction, and exopolysaccharide adhesion in the co-culture process, realizing co-pelletization of microalgae and fungi, which is conducive to microalgae harvesting. Besides, the combination of fungi and microalgae has a complementary effect on pollutant removal from wastewaters. The co-culture of fungi-microalgae has excellent development prospects with both environmental and economic benefits, and it is expected to be applied on an industrial scale.
先前的研究已经证实，利用微藻处理废水是有效的。由于微藻体积小，如何从废水中高效地回收微藻是限制藻类技术发展的关键因素。真菌辅助微藻生物絮凝同时用于微藻收获和废水处理，这在以前被忽视了，但由于其低成本和高效率，在最近十年受到了越来越多的关注。本综述发现，在共培养过程中，真菌菌丝和微藻由于静电中和、表面蛋白相互作用和胞外多糖黏附，可以黏附在一起，实现微藻和真菌的共絮凝，有利于微藻的收获。此外，真菌和微藻的结合对废水中污染物的去除具有互补作用。真菌-微藻的共培养具有良好的发展前景，兼具环境和经济效益，有望在工业规模上应用。
