Modification of Cation-Exchange Membranes with Polyelectrolyte Multilayers to Tune Ion Selectivity in Capacitive Deionization.

ABSTRACT: Capacitive deionization (CDI) is a desalination technique that can be applied for the separation of target ions from water streams. For instance, mono- and divalent cation selectivities were studied by other research groups in the context of water softening. Another focus is on removing Na⁺ from recirculated irrigation water (IW) in greenhouses, aiming to maintain nutrients. This is important as an excess of Na⁺ has toxic effects on plant growth by decreasing the uptake of other nutrients. In this study, we investigated the selective separation of sodium (Na⁺) and magnesium (Mg²⁺) in MCDI using a polyelectrolyte multilayer (PEM) on a standard grade cation-exchange membrane (Neosepta, CMX). Alternating layers of poly(allylamine hydrochloride) (PAH

SUBMITTER: Sahin S 

PROVIDER: S-EPMC7404204 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature