Abstract
Microalgae biomass is a versatile option for a myriad of purposes, as it does not require farmable land for cultivation and due of its high CO2 fixation efficiency during growth. However, biomass harvesting is considered a bottleneck in the process because of its high cost. Magnetic harvesting is a promising method on account of its low cost, high harvesting speed, and efficiency, which can be used to improve the results of other harvesting methods. Here, we present the state of the art of the magnetic harvesting method. Detailed approaches involving different nanomaterials are described, including types, route of synthesis, and functionalization, variables that interfere with harvesting, and recycling methods of nanoparticles and medium. In addition to discussing the overall perspectives of the method, we provide a guideline for future research.
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This work was supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and by Fundação Estadual de Amparo à Pesquisa do Estado do Espírito Santo (156/2018).
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ACLB performed literature compilation, writing, and plagiary control. JPO revised information related to expertise area (magnetic nanomaterials and biotechnology). RFG revised information related to expertise area (microalgae cultivation). STAC revised information related to expertise area (microalgae microbiology, growth, and harvesting), and was responsible for project supervision. All authors participated in general review, edition, read and approved the final manuscript.
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de Lima Barizão, A.C., de Oliveira, J.P., Gonçalves, R.F. et al. Nanomagnetic approach applied to microalgae biomass harvesting: advances, gaps, and perspectives. Environ Sci Pollut Res 28, 44795–44811 (2021). https://doi.org/10.1007/s11356-021-15260-z
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DOI: https://doi.org/10.1007/s11356-021-15260-z