An Investigation through the Validation of the Electrochemical Methods Used for Bipolar Membranes Characterization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000074" target="_blank" >RIV/28676092:_____/17:N0000074 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.memsci.2017.09.026" target="_blank" >http://dx.doi.org/10.1016/j.memsci.2017.09.026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2017.09.026" target="_blank" >10.1016/j.memsci.2017.09.026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An Investigation through the Validation of the Electrochemical Methods Used for Bipolar Membranes Characterization

Popis výsledku v původním jazyce

Four types of bipolar membranes (BMs) with different structural properties were subjected to various electrochemical methods including current-voltage curve, (CVC) chronopotentiometry, and impedance spectroscopy, to be characterized in terms of selectivity, energy consumption and the water splitting capability. Then the bipolar membranes were used in two kinds of electrodialysis modules, lab scale and pilot unit, for acid and base production. The produced acid and base were analyzed to calculate the product purity, energy consumption and current efficiency of each bipolar membrane electrodialysis (BMED). The results obtained with electrodialysis coincided with those of electrochemical methods, indicating that even though the electrochemical methods are rather fast and easy to perform, they are quite reliable. Furthermore the impact of structural properties of each BM on its efficiency was investigated. It was figured out that the reinforcing of a heterogeneous BM improves its properties while the increase in the ion exchange resin content on each layer of the heterogeneous BMs was not resulted in any significant enhancement of BM properties. The investigated homogenous membrane showedhigher selectivity and less energy consumption compared to the heterogeneous BMs.

Název v anglickém jazyce

An Investigation through the Validation of the Electrochemical Methods Used for Bipolar Membranes Characterization

Popis výsledku anglicky

Four types of bipolar membranes (BMs) with different structural properties were subjected to various electrochemical methods including current-voltage curve, (CVC) chronopotentiometry, and impedance spectroscopy, to be characterized in terms of selectivity, energy consumption and the water splitting capability. Then the bipolar membranes were used in two kinds of electrodialysis modules, lab scale and pilot unit, for acid and base production. The produced acid and base were analyzed to calculate the product purity, energy consumption and current efficiency of each bipolar membrane electrodialysis (BMED). The results obtained with electrodialysis coincided with those of electrochemical methods, indicating that even though the electrochemical methods are rather fast and easy to perform, they are quite reliable. Furthermore the impact of structural properties of each BM on its efficiency was investigated. It was figured out that the reinforcing of a heterogeneous BM improves its properties while the increase in the ion exchange resin content on each layer of the heterogeneous BMs was not resulted in any significant enhancement of BM properties. The investigated homogenous membrane showedhigher selectivity and less energy consumption compared to the heterogeneous BMs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

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)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Membrane Science

ISSN

0376-7388

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

544

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

195-207

Kód UT WoS článku

000412350900021

EID výsledku v databázi Scopus

2-s2.0-85029312282