CBE Seminar: Razi Epsztein, Israel Institute of Technology “Targeting solute-solute selectivity in membrane separation”

Content

Host:  Jessica Schiffman

Abstract: 

Synthetic dense membranes with pores at the sub-nanometre scale are at the core of processes for separating solutes from water, such as water purification and desalination. While these membrane processes have achieved substantial industrial success, the capability of state-of-the-art membranes to achieve high selectivity between solutes is limited. Such high-precision separation would enable fit-for-purpose treatment, improving the sustainability of current water-treatment processes and opening doors for new applications of membrane technologies. In this talk, I will first introduce the challenges of state-of-the-art membranes to achieve high selectivity between solutes. I will then introduce our current attempts to promote solute-solute selectivity in membrane separation using improved process and membrane design, which are inspired by our recent insights into the selectivity mechanisms in dense membranes. 

Bio: 

Razi Epsztein is an Associate Professor in the Faculty of Civil and Environmental Engineering at the Technion – Israel Institute of Technology. He received his BSc and MSc degrees from Ben-Gurion University of the Negev and his PhD from the Technion, followed by postdoctoral training with Prof. Menachem Elimelech at Yale University. His research focuses on membrane-based processes for water and wastewater treatment, emphasizing the fundamental mechanisms governing molecular transport and selectivity in membranes and nanopores. Building on these insights, his group develops advanced membranes and separation processes with enhanced ion selectivity, including ion-specific membranes that recognize target ions through tailored binding sites and molecular interactions. Prof. Epsztein serves on the Environmental Science & Technology (ES&T) Early Career Editorial Advisory Board and has received several prestigious honors, including the 2025 James J. Morgan Early Career Award from the ACS Division of Environmental Chemistry (ENVR) and the ES&T Super Reviewer Award.