Electrodialysis of various electrolytes using heterogeneous and homogeneous membranes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F16%3AN0000075" target="_blank" >RIV/28676092:_____/16:N0000075 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Electrodialysis of various electrolytes using heterogeneous and homogeneous membranes
Popis výsledku v původním jazyce
Aim of this work was to investigate electrodialysis desalination of monovalent and divalent ions with different types of ion exchange membranes. Since properties of membranes determine the performance of electrodialysis, two types of membranes were used – homogeneous and heterogeneous. Heterogeneous Ralex® membranes and homogeneous Fujifilm membranes were used in tested ED stacks. Electrodialysis of four different electrolytes was performed. As salts were used Na2SO4, NaNO3, Ca(NO3)2 and MgSO4. Solutions of each one of these salts in demineralized water were prepared with conductivity 20 mS.cm-1. Electrodialysis of solutions was done on laboratory ED stacks with 10 membrane pairs with voltage 10 V. Recirculation batch mode has been applied with flow rates of diluate, concentrate and electrode solution 50 l.h-1. Firstly, desalination characteristics of the stack with heterogeneous membranes were measured and then measurements with homogeneous membranes took place. Conductivity of diluate on input and output side of the stack and conductivity of concentrate on the output side were recorded in regular intervals. Process was stopped after the diluate conductivity on the input fell below 1 mS.cm-1. Analysis of results confirmed that homogeneous membranes remove some types of ions faster in comparison to heterogeneous membranes due to their lower electrical resistance and better permselectivity. However, worse selectivity of Fujifilm homogeneous membranes had been proved for divalent cations.
Název v anglickém jazyce
Electrodialysis of various electrolytes using heterogeneous and homogeneous membranes
Popis výsledku anglicky
Aim of this work was to investigate electrodialysis desalination of monovalent and divalent ions with different types of ion exchange membranes. Since properties of membranes determine the performance of electrodialysis, two types of membranes were used – homogeneous and heterogeneous. Heterogeneous Ralex® membranes and homogeneous Fujifilm membranes were used in tested ED stacks. Electrodialysis of four different electrolytes was performed. As salts were used Na2SO4, NaNO3, Ca(NO3)2 and MgSO4. Solutions of each one of these salts in demineralized water were prepared with conductivity 20 mS.cm-1. Electrodialysis of solutions was done on laboratory ED stacks with 10 membrane pairs with voltage 10 V. Recirculation batch mode has been applied with flow rates of diluate, concentrate and electrode solution 50 l.h-1. Firstly, desalination characteristics of the stack with heterogeneous membranes were measured and then measurements with homogeneous membranes took place. Conductivity of diluate on input and output side of the stack and conductivity of concentrate on the output side were recorded in regular intervals. Process was stopped after the diluate conductivity on the input fell below 1 mS.cm-1. Analysis of results confirmed that homogeneous membranes remove some types of ions faster in comparison to heterogeneous membranes due to their lower electrical resistance and better permselectivity. However, worse selectivity of Fujifilm homogeneous membranes had been proved for divalent cations.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
JP - Průmyslové procesy a zpracování
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/LO1418" target="_blank" >LO1418: Progresivní rozvoj Membránového inovačního centra</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.
Údaje specifické pro druh výsledku
Název statě ve sborníku
Proceedings 43rd International Conference of Slovak Society of Chemical Engineering
ISBN
978-80-89597-35-2
ISSN
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e-ISSN
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Počet stran výsledku
6
Strana od-do
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Název nakladatele
Slovak Society of Chemical Engineering
Místo vydání
Bratislava
Místo konání akce
Tatranské Matliare
Datum konání akce
23. 5. 2016
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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