Pilot module for elektrodialysis - metathesis protected against shunt currents

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000058" target="_blank" >RIV/28676092:_____/17:N0000058 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.5004/dwt.2017.20446" target="_blank" >http://dx.doi.org/10.5004/dwt.2017.20446</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5004/dwt.2017.20446" target="_blank" >10.5004/dwt.2017.20446</a>

Result language
angličtina
Original language name
Pilot module for elektrodialysis - metathesis protected against shunt currents
Original language description
Electrodialysis–metathesis is electromembrane process working with two diluting and two concentrating streams. Cations from the first diluate combine with anions from the second diluate and form the first concentrate stream, and vice versa, cations from the second diluate combine with anions from the first diluate and form the second concentrate stream. Due to presence of ion-exchange membranes in sealing area and high concentration differences and diluate conductivity lower than membrane’s, there occurs shunt current capable “burning the membranes” and decreasing the total current effectivity. In pilot module for electrodialysis – metathesis, a part of ion exchange membrane around distribution channels was replaced by electrically non conductive insert. This module was tested in the application of potassium nitrate production from ammonium nitrate and potassium chloride solutions. In parallel, the same tests were performed using standard pilot module without these treatments to be able to evaluate their impact on process performance. The module with protective treatments achieved almost 6 % higher total current efficiency and 6 % lower energy consumption in comparison with standard module.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20401 - Chemical engineering (plants, products)

Project
<a href="/en/project/LO1418" target="_blank" >LO1418: Progressive development of the Membrane Innovation Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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