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Confined mass transfer mechanism and preparation strategies of separation membranes: A review

Journal

MATERIALS & DESIGN
Volume 227, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2023.111805

Keywords

Membrane; Confined mass transfer; Separation; Transfer model

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Membrane technology has gained increasing attention in the field of separation and desalination due to its efficiency, energy saving, and environmental advantages. However, there is a lack of understanding in mass transfer mechanisms and control methods, especially under confined conditions like reverse osmosis and nanofiltration, which restrict the design and development of membrane materials. This article reviews recent research progress on separation membranes with confined mass transfer effects and analyzes the challenges faced by classical mass transfer models. The review provides guidance for newcomers and researchers in the field and holds reference value for the future development of confined mass transfer membranes.
The membrane technology has attracted increasing attention in the field of separation and desalination due to its high efficiency, energy saving, environmental protection, and other advantages. However, related mass transfer theories especially under confined conditions (such as reverse osmosis and nanofiltration) lack the understanding of common mass transfer mechanisms and control methods, thereby seriously restricting the design and development of related membrane materials. This article reviews the research progress of separation membranes with confined mass transfer effects in recent years and analyzes the challenges faced by classical mass transfer models under confined mass transfer conditions. The confined mass transfer mechanism, influencing factors, construction methods, and types of preparation materials are summarized. Furthermore, the development of confined mass transfer separation membranes and the problems to be solved are prospected. Nanomaterial-modified membranes with confined mass transfer function are most likely to break through the trade-off effect of high flux and high selectivity. The confined mass transfer mechanism and preparation strategies of separation membranes are rarely reviewed. Hence, this review can provide guidance for new entrants and existing researchers in the field of membrane separation and has certain reference value for the development of confined mass transfer membranes in the future. CO 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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