Department of Chemical Engineering, Auburn University, Auburn, AL, USA.
Agronomy Department, Ft. Lauderdale Research and Education Center, University of Florida-IFAS, Davie, FL, USA.
Appl Microbiol Biotechnol. 2021 Mar;105(5):1823-1835. doi: 10.1007/s00253-021-11127-y. Epub 2021 Feb 10.
There is growing interest in attached algae cultivation systems because they could provide a more cost- and energy-efficient alternative to planktonic (suspended algae) cultivation systems for many applications. However, attached growth systems have been far less studied than planktonic systems and have largely emphasized algae strains of most interest for biofuels. New algal biorefinery pathways have assessed the commercial potentials of algal biomass beyond biofuel production and placed more emphasis on value-added products from that biomass. Therefore, algal strain selection criteria and biomass cultivation methods need to be updated to include additional strains for improved efficiency. One possible way of improving attached cultivation systems is through engineering substrate surface characteristics to boost algal adhesion and enable strain selective algal colonization and growth. This review explores the effect of substrate chemical and topographical characteristics on the cultivation of attached algae. It also highlights the importance of considering algal community structure and attachment mechanisms in investigating attached algae systems using the example of filamentous algae found in algal turf scrubber (ATS™) systems. KEY POINTS : • Attached algal cultivation is a promising alternative to planktonic cultivation. • Performance increase results from tuning surface qualities of attachment substrates. • Attachment adaptation of periphytic algae has innate potential for cultivation.
人们对附着藻类培养系统越来越感兴趣，因为它们可能为许多应用提供一种比浮游（悬浮）藻类培养系统更具成本效益和能源效率的替代方法。然而，附着生长系统的研究远远少于浮游系统，并且主要强调了最适合生物燃料的藻类菌株。新的藻类生物炼制途径评估了藻类生物质除生物燃料生产之外的商业潜力，并更加重视该生物质的附加值产品。因此，需要更新藻类菌株选择标准和生物质培养方法，以包括提高效率的其他菌株。一种可能的改进附着培养系统的方法是通过工程化基质表面特性来促进藻类附着，并实现菌株选择性藻类定殖和生长。本综述探讨了基质化学和地形特征对附着藻类培养的影响。它还强调了在研究附着藻类系统时考虑藻类群落结构和附着机制的重要性，以藻类 turf 擦洗器（ATS™）系统中发现的丝状藻类为例。要点：
• 附着藻类培养是浮游培养的一种有前途的替代方法。
• 通过调整附着基质的表面质量，可以提高性能。
• 周生藻类的附着适应性具有内在的培养潜力。
