Oct 20 2020 04:35 PM
Oct 20 2020 05:35 PM
EnSE Webinar Series Invited Speaker
Prof. Ngai Yin Yip
Assistant Professor of Earth and Environmental Engineering at Columbia University
Tuesday, 20 Oct 2020, 4:35 pm – 5:35 pm Zoom Link： https://kaust.zoom.us/j/99011370184
Prof. NorEddine Ghaffour
Disrupting Desalination: Temperature Swing Solvent Extraction for Hypersaline Brines
Hypersaline brines, e.g., produced water from oil and gas extraction, are of growing environmental importance but are technologically under-served by today's desalination methods. In this talk, Prof. Yip will present a radically different approach for hypersaline desalination, termed temperature swing solvent extraction (TSSE). The technology utilizes a low-polarity solvent that is immiscible with aqueous solutions to extract water from hypersaline brines. Because water solubility of the solvent is highly temperature-sensitive, a mild temperature swing causes the aqueous phase to demix from the solvent, yielding product water. We demonstrate the potential of TSSE to desalinate hypersaline brines with exceptional salt removal and showed high water recovery of actual brines. Finally, the prospects of the technology for zero liquid discharge are examined.
Dr. Ngai Yin Yip is the Lavon Duddleson Krumb Assistant Professor of Earth and Environmental Engineering at Columbia University. He received his doctoral degree in Chemical and Environmental Engineering from Yale University, where his dissertation work on novel membrane technologies for the sustainable production of energy and water earned the CH2M Hill/AEESP Outstanding Doctoral Dissertation Award in 2014. His current research is focused on advancing technologies and innovations for environmental challenges at the nexus of water and energy, including energy-efficient desalination, sustainable resource recovery from waste streams, and novel membrane materials for water purification. His research has been sponsored by the NSF and the U.S. Bureau of Reclamation.