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Water scarcity, constrained energy resources, and the accelerating demand for critical materials are defining challenges of this century. As global production of plastics, electronics, and advanced chemicals continues to grow, access to essential resources including lithium, cobalt, nickel, rare earth elements, and energy feedstocks is becoming increasingly limited. These pressures highlight the urgent need for energy efficient separation technologies that can sustainably produce, recover, and recycle resources across the water-energy-materials nexus. Yet separations already account for a significant fraction of global energy consumption, and conventional thermal and extractive approaches are reaching their practical and economic limits.

This seminar will examine recent advances in the engineering of membranes for extreme and nontraditional separation environments. The discussion will cover fundamental insights into polymeric membrane compaction and the development of ultrahigh-pressure and high-temperature reverse osmosis membranes capable of stable operation under severe salinity, pressure, and thermal loading. The seminar will also highlight the expansion of membrane design into crystalline-framework and hybrid systems, including MOF and COF based composite membranes for selective lithium recovery from brines and battery-waste leachates. Collectively, these developments demonstrate how next generation membranes can enable energy efficient separations, advance the energy transition, and promote resource circularity.

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Dr. Jishan Wu is a Postdoctoral Fellow at the Rice University WaTER Institute. His research focuses on engineering next-generation membrane materials for energy-efficient separations across the water–energy-materials nexus, with applications in critical-mineral recovery, brine management, and industrial process separations. His work integrates polymer science, nanoporous materials, interfacial chemistry, and transport phenomena to enable membrane operation under extreme pressure, temperature, and salinity. His research has been recognized through multiple competitive national fellowships, including the National Water Research Institute–Southern California Salinity Coalition (NWRI–SCSC) Fellowship, the North American Membrane Society (NAMS) Student Fellowship, and the American Membrane Technology Association / U.S. Bureau of Reclamation (AMTA/USBR) Fellowship. He is also a recipient of the Rising Star in Desalination Award and the Elsevier Young Researcher Best Oral Presentation Award. In addition to his research, he serves as an Early Career Editorial Board Member of Desalination and an Editorial Board Member of npj Clean Water.