review · Case Studies in Chemical and Environmental Engineering
Clean water scarcity drives the development of advanced membrane technologies for water and wastewater treatment. Polymeric membranes serve across diverse sectors, including packaging, protective coatings, gas separation, and water purification. This review examines pressure-driven membrane processes ranging from microfiltration to nanofiltration, evaluating both natural and synthetic polymeric materials. Particular attention is given to the removal of heavy metals from contaminated water. Three key configurations are highlighted: mixed matrix membranes, thin film layer membranes, and membranes that incorporate polymer inclusions. In addition, the review explores separation techniques such as ultrafiltration, complexation-enhanced ultrafiltration, reverse osmosis, forward osmosis, and pervaporation. By detailing membrane structural characteristics and operational mechanisms, the work outlines how continuing innovations in polymeric membrane design can help combat global water scarcity and water pollution.
Heavy metal contamination in water poses a critical threat to global health and ecosystems. Understanding the performance of synthetic and natural polymeric membranes across varied filtration systems offers pathways to cleaner water supplies. By categorising different membrane designs and separation techniques, this work highlights how targeted filtration technologies can help address worldwide shortages of safe and sustainable water.
The review describes applications in industrial and municipal water and wastewater treatment, targeting water utilities and treatment plant operators seeking heavy metal remediation. Technologies discussed range from established commercial methods such as reverse osmosis and microfiltration to developing configurations such as mixed matrix membranes and polymer inclusion membranes. Because this is a broad review of existing and emerging systems, the abstract does not specify immediate product readiness or proprietary development.
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Clean water scarcity is an escalating global concern, necessitating the development of innovative membrane technologies. This mini review explores the multifaceted realm of membrane technology, a field increasingly engaging researchers and academics. Polymeric membranes find application in diverse domains, spanning gas separation, packaging films, protective coatings, and crucially, water purification techniques like reverse osmosis and various filtration methods. This review predominantly focuses on pressure-driven membrane processes, a classification evolving in selectivity from nanofiltration to microfiltration. It further dissects these processes based on natural and synthetic polymeric membranes. Notably, this work delves into the pivotal role of polymeric membranes in heavy metal water purification, emphasizing the evolving landscape of membrane technologies. Three notable membrane types under scrutiny are Mixed Matrix Membranes, Thin Film Layer Membranes, and membranes incorporating polymer inclusions. Their versatility and applications in diverse sectors showcase the burgeoning potential of polymeric membranes. Furthermore, this review outlines the future applications of polymeric membranes, delineating their indispensable role in nanofiltration, microfiltration, ultrafiltration, and complexation-enhanced ultrafiltration. The compelling attributes of reverse osmosis, forward osmosis, and pervaporation in advancing water purification are also expounded upon. The review culminates by providing an insight into the structural intricacies of polymeric membranes, shedding light on their diverse applications and their pivotal role in addressing the global water crisis. The dynamic and evolving landscape of membrane technology underscores the crucial need for continued research and innovation in this domain to tackle water pollution and scarcity effectively. As we venture further into the 21st century, the multifaceted applications of polymeric membranes are set to play an instrumental role in safeguarding our most precious resource—clean and sustainable water.
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DOI: 10.1016/j.cscee.2023.100538
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