期刊
DESALINATION
卷 553, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.desal.2023.116460
关键词
Reverse osmosis (RO); Membrane fouling; Antifouling; Self-cleaning; Water treatment
Reverse osmosis (RO) membranes are widely used for their excellent water permeation rates and high salt rejection, but fouling remains a major issue. Various techniques, including pretreatment and cleaning, have been developed to minimize and control fouling. The development of antifouling and self-cleaning RO membranes has received significant attention. This review discusses the types and mechanisms of fouling, highlights factors influencing fouling in RO, and provides an overview of novel techniques for imparting antifouling and self-cleaning properties to RO membranes.
Reverse osmosis (RO) membranes are widely employed due to their inherent advantage of achieving excellent water permeation rates and high salt rejection. However, fouling is a main issue in RO applications that leads to increasing the operational cost, reducing the lifespan of the membrane, decreasing the permeate flux, and increasing the energy demand. Therefore, many techniques have been developed and used in the industry to minimize and control fouling in RO membranes, such as feed pretreatment and membrane cleaning. In the context of fouling mitigation and control, the development of antifouling and self-cleaning RO membranes has gained significant attention. This review aims to discuss membranes fouling, its types, and mechanisms. More-over, factors affecting the fouling process in RO have been highlighted. The article provides an overview of the novel techniques, such as physical and chemical surface modification and thin-film nanocomposite membrane synthesis for imparting antifouling/self-cleaning properties to RO membranes. Finally, some related challenges are discussed, and future recommendations are presented.
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