Conductivity of ion-exchange resins for electrodeionization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F19%3AN0000041" target="_blank" >RIV/28676092:_____/19:N0000041 - isvavai.cz</a>

Result on the web

<a href="http://www.czemp.cz/cs/workshop-students-presentation-fulltexts/wsp-2019-fulltexty" target="_blank" >http://www.czemp.cz/cs/workshop-students-presentation-fulltexts/wsp-2019-fulltexty</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Conductivity of ion-exchange resins for electrodeionization

Original language description

Conductivity of ion-exchange resins plays an important role in the kinetics of the electrodeionization process as it influences the distribution of current density between the continuous zones of anion-exchange and cation-exchange resin beads across the diluting chambers of an electrodeionization stack. Therefore, this property must be carefully observed when selecting suitable ion-exchange resins for electrodeionization. The aim of this work was to measure conductivity of a selected type of strong acid cation-exchange resins in Na+ and H+ forms and type 1 strong base anion-exchange resins in Cl- and OH- forms from several lot numbers. Procedure for pretreatment and conversion of ion-exchange resin to the required ionic form prior to conductivity measurement was improved, so that it was not necessary to change experimental setup during measurement. The experimental setup comprised a flow-through cell filled with the resin, through which high purity water was passed. Purity of the water was maintained by cation-exchange and anion-exchange columns connected in series, which were incorporated in the loop. Quality of the water was monitored by two conductivity sensors installed at the inlet to and the outlet from the cell. The conductivity of the resin was measured by impedance spectroscopy at a constant frequency of 1 kHz. Results obtained show a higher variability of conductivity of anion-exchange resin compared to cation-exchange resin.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/FV10062" target="_blank" >FV10062: Electromembrane Modules of New Generation</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

Workshop of Students´ Presentations 2019

ISBN

978-80-906831-9-8

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

31-32

Publisher name

Czech Membrane Platform

Place of publication

Česká Lípa

Event location

Stráž pod Ralskem

Event date

Oct 16, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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