Seminar: Recent Insights into the Selectivity of Nanofiltration Membranes

 The Porter School for Environmental Studies and 
The Fleishman Faculty of Engineering

Invite you to a Special Seminar:

Thursday, 28 December 2017, 11:00am in Room 101, Porter Building

Recent Insights into the Selectivity of Nanofiltration Membranes

By
Dr. Raz Epsztein
Yale University

ABSTRACT:

In contrast to reverse osmosis (RO) membranes, nanofiltration (NF) membranes have varying selectivity towards different electrolytes. Rejection mechanisms in NF include mainly steric (size) and Donnan (charge) exclusion. Despite the strong similarity between different monovalent anions in terms of their hydrated radius and charge, the rejection trend commonly observed in NF systems cannot be adequately explained solely by the aforementioned exclusion mechanisms. Our current research proposes and elucidates two emerging mechanisms related to size and charge exclusion and invites a future research of ion transport in atomically thin pores to better understand ion selectivity in nanopores.