Research Scientist (Water Desalination) Candidate Seminar
Ion exchange membranes (IEMs) are versatile materials that determine the performance of many electrochemical devices for water and energy applications, including electrodialysis - the leading electrochemical technology for water desalination. IEMs for electrodialysis have historically been optimized for brackish water and are not well-suited to the higher salt concentrations involved in several emerging applications, but rational design of improved IEMs is inhibited by limited understanding of ion transport in these materials. Accordingly, this seminar will examine how high salt concentrations affect the ion transport properties of IEMs and how that knowledge can be used to both design improved IEMs and predict their performance under different conditions. Specifically, we identify low water permeability and strong osmotic deswelling as desirable target properties for IEMs tailored for high-salinity applications. Building on these findings, we show that changes in IEM selectivity with salt concentration can be accurately predicted from four easily-measured membrane properties.
Ryan Kingsbury, Ph.D., P.E.
Postdoctoral Researcher, Lawrence Berkeley National Laboratory
Ryan Kingsbury joined Berkeley Lab as a postdoctoral researcher in Summer 2019, after obtaining a PhD in Environmental Sciences and Engineering from the University of North Carolina at Chapel Hill. During his PhD, he was named a National Science Foundation Graduate Research Fellow and recognized with a Student Fellowship Award by the North American Membrane Society. Before graduate school, he worked as a consulting engineer in the drinking water treatment field, earning a Professional Engineering license in 2013 before founding a startup company in the energy storage space. Ryan studies electrochemical technologies for clean water and clean energy production, with a particular focus on accelerating development of ion-selective materials.