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Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review
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This review covers hollow fiber nanofiltration membranes, examining advances in non-polyamide separation layers and the structural advantages of hollow fiber geometry over spiral-wound configurations, particularly for fouling resistance and hydraulic cleaning in water treatment applications.
Hollow fiber nanofiltration (NF) membranes have gained increased attention in recent years, partly driven by the availability of alternatives to polyamide-based dense separation layers. Moreover, the global market for NF has been growing steadily in recent years and is expected to grow even faster. Compared to the traditional spiral-wound configuration, the hollow fiber geometry provides advantages such as low fouling tendencies and effective hydraulic cleaning possibilities. The alternatives to polyamide layers are typically chemically more stable and thus allow operation and cleaning at more extreme conditions. Therefore, these new NF membranes are of interest for use in a variety of applications. In this review, we provide an overview of the applications and emerging opportunities for these membranes. Next to municipal wastewater and drinking water processes, we have put special focus on industrial applications where hollow fiber NF membranes are employed under more strenuous conditions or used to recover specific resources or solutes.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.