期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 902, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2023.166479
关键词
Microalgal harvesting; Filtration; Membranes; Nano-clays; Antifouling
Membrane fouling is a major challenge that hinders the sustainable application of membrane filtration-based microalgal harvesting at the industrial level. This review explores the potential of using nano-clay fillers for membrane surface modification to improve membrane performance and anti-fouling properties. Strategies for better incorporation of nano-clay in the polymer matrix of the membrane are summarized, and factors affecting membrane fouling are discussed in depth.
Membrane fouling is a major challenge which limits the sustainable application of membrane filtration-based microalgal harvesting at industrial level. Membrane fouling leads to increased operational and maintenance costs and represents a major obstacle to microalgal downstream processing. Nano-clays are promising naturally occurring nanoparticles in membrane fabrication due to their low-cost, facile preparation, and their superior properties in terms of surface hydrophilicity, mechanical stability, and resistance against chemicals. The membrane surface modification using nano-clays is a sustainable promising approach to improve membranes mechanical properties and their fouling resistance. However, the positive effects of nano-clay particles on membrane fouling are often limited by aggregation and poor adhesion to the base polymeric matrix. This review surveys the recent efforts to achieve anti-fouling behavior using membrane surface modification with nano-clay fillers. Further, strategies to achieve a better incorporation of nano-clay in the polymer matrix of the membrane are summarised, and the factors that govern the membrane fouling, stability, adhesion, agglomeration and leaching are discussed in depth.
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