Desalination performance assessment of scalable, multi-stack ready shock electrodialysis unit utilizing anion-exchange membranes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24510%2F20%3A00008437" target="_blank" >RIV/46747885:24510/20:00008437 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24220/20:00008437

Result on the web

<a href="https://www.mdpi.com/2077-0375/10/11/347" target="_blank" >https://www.mdpi.com/2077-0375/10/11/347</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/membranes10110347" target="_blank" >10.3390/membranes10110347</a>

Result language

angličtina

Original language name

Desalination performance assessment of scalable, multi-stack ready shock electrodialysis unit utilizing anion-exchange membranes

Original language description

Incumbent electromembrane separation processes, including electrodialysis (ED) and electrodeionization (EDI), provide competitive techniques for desalination, selective separation, and unique solutions for ultra-pure water production. However, most of these common electrochemical systems are limited by concentration polarization and the necessity for multistep raw water pre-treatment. Shock electrodialysis (SED) utilizes overlimiting current to produce fresh, deionized water in a single step process by extending ion depleted zones that propagate through a porous medium as a sharp concentration gradient or a shock wave. So far, SED has been demonstrated on small scale laboratory units using cation-exchange membranes. In this work, we present a scalable and multi-stack ready unit with a large, 5000 mm2 membrane active area designed and constructed at the Technical University of Liberec in cooperation with MemBrain s.r.o. and Mega a.s. companies (Czechia). We report more than 99% salt rejection using anion-exchange membranes, depending on a dimensionless parameter that scales the constant applied current by the limiting current. It is shown that these parameters are most probably associated with pore size and porous media chemistry. Further design changes need to be done to the separator, the porous medium, and other functional elements to improve the functionality and energy efficiency.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20402 - Chemical process engineering

Project

<a href="/en/project/TP01010031" target="_blank" >TP01010031: PROSYKO - Pro-Active System of Commercialization at TU Liberec 2</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Membranes

ISSN

20770375

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

15

Pages from-to

1-15

UT code for WoS article

000593687700001

EID of the result in the Scopus database

2-s2.0-85096516745