Low-resistance monovalent-selective cation exchange membranes prepared using molecular layer deposition for energy-efficient ion separations.

ABSTRACT: The desalination of brackish water provides water to tens of millions of people around the world, but current technologies deplete much needed nutrients from the water, which is determinantal to both public health and agriculture. A selective method for brackish water desalination, which retains the needed nutrients, is electrodialysis (ED) using monovalent-selective cation exchange membranes (MVS-CEMs). However, due to the trade-off between membrane selectivity and resistance, most MVS-CEMs demonstrate either high transport resistance or low selectivity, which increase energy consumption and hinder the use of such membranes for brackish water desalination by ED. Here, we introduce a new method for fabrication of MVS-CEMs, using molecular layer deposition (MLD) to coat CEMs with ultrathin,

SUBMITTER: Wormser EM 

PROVIDER: S-EPMC9134019 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature