Semi-Continuous Desalination and Concentration of Small-Volume Samples

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F21%3A43967822" target="_blank" >RIV/49777513:23640/21:43967822 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/1422-0067/22/23/12904" target="_blank" >https://www.mdpi.com/1422-0067/22/23/12904</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ijms222312904" target="_blank" >10.3390/ijms222312904</a>

Result language

angličtina

Original language name

Semi-Continuous Desalination and Concentration of Small-Volume Samples

Original language description

Electrodialysis is an electric-field-mediated process separating ions exploiting selective properties of ion-exchange membranes. The ion-exchange membranes create an ion-depleted zone in an electrolyte solution adjacent to the membrane under DC polarization. We constructed a microfluidic system that uses the ion-depleted zone to separate ions from the processed water solution. We tested the separation performance by desalting a model KCl solution spiked with fluorescein for direct observation. We showed both visually and by measuring the conductivity of the output solutions that the system can work in three modes of operation referred to as continuous desalination, desalination by accumulation, and unsuccessful desalination. The mode of operation can easily be set by changing the control parameters. The desalination factors for the model KCl solution reached values from 80 to 100%, depending on the mode of operation. The concentration factor, given as a ratio of concentrate-to-feed concentrations, reached zero for desalination by accumulation when only diluate was produced. The water recovery, therefore, was infinite at these conditions. Independent control of the diluate and concentrate flow rates and the DC voltage turned our system into a versatile platform, enabling us to set proper conditions to process various samples.

Czech name

—

Czech description

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Type

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

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

ISSN

1422-0067

e-ISSN

1422-0067

Volume of the periodical

22

Issue of the periodical within the volume

23

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

nestrankovano

UT code for WoS article

000735261400001

EID of the result in the Scopus database

2-s2.0-85119969184