Perspectives of the industrial application of homogeneous and heterogeneous bipolar membranes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F24%3AN0000035" target="_blank" >RIV/28676092:_____/24:N0000035 - isvavai.cz</a>

Výsledek na webu

<a href="https://sscheconference.sk/home" target="_blank" >https://sscheconference.sk/home</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Perspectives of the industrial application of homogeneous and heterogeneous bipolar membranes

Popis výsledku v původním jazyce

Electrodialysis with bipolar membranes (EDBM) is a process able to produce acids and bases from their salts. It finds its applications, e.g. in recycling of industrial wastewater, pH adjustment of various media or environmental protection. The aim of this work was to investigate three different types of bipolar membranes (one heterogeneous and two homogeneous) via their testing in a laboratory EDBM module together with several types of cation and anion exchange membranes. The current/voltage curve of each bipolar membrane was evaluated as well. Results were compared and discussed from the point of view of the applicability of membrane stacks in different industrial sectors. It was shown that the main drawbacks of heterogeneous bipolar membranes are their high resistance during water splitting and low selectivity. However, due to their favorable price and possibility to be used in contact with foodstuffs, they can be effectively used in applications working in one-pass regime or if slight pH changes are needed, e.g. in the food or beverage industry. The combination of homogeneous and heterogeneous membranes in the EDBM stack is also possible. For example, if highly concentrated acids/bases are required but their purity is not so important (e.g. technologies of CO2 capture or flue gas desulfurization), a heterogeneous bipolar membrane combined with homogeneous anion and cation exchange membranes would be reasonable. EDBM stack composed of only homogeneous membranes should be used when the technological demands are highly concentrated products of high purity and high yield of water.

Název v anglickém jazyce

Perspectives of the industrial application of homogeneous and heterogeneous bipolar membranes

Popis výsledku anglicky

Electrodialysis with bipolar membranes (EDBM) is a process able to produce acids and bases from their salts. It finds its applications, e.g. in recycling of industrial wastewater, pH adjustment of various media or environmental protection. The aim of this work was to investigate three different types of bipolar membranes (one heterogeneous and two homogeneous) via their testing in a laboratory EDBM module together with several types of cation and anion exchange membranes. The current/voltage curve of each bipolar membrane was evaluated as well. Results were compared and discussed from the point of view of the applicability of membrane stacks in different industrial sectors. It was shown that the main drawbacks of heterogeneous bipolar membranes are their high resistance during water splitting and low selectivity. However, due to their favorable price and possibility to be used in contact with foodstuffs, they can be effectively used in applications working in one-pass regime or if slight pH changes are needed, e.g. in the food or beverage industry. The combination of homogeneous and heterogeneous membranes in the EDBM stack is also possible. For example, if highly concentrated acids/bases are required but their purity is not so important (e.g. technologies of CO2 capture or flue gas desulfurization), a heterogeneous bipolar membrane combined with homogeneous anion and cation exchange membranes would be reasonable. EDBM stack composed of only homogeneous membranes should be used when the technological demands are highly concentrated products of high purity and high yield of water.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 50th International Conference of SSCHE

ISBN

978-80-8208-118-6

ISSN

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e-ISSN

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Počet stran výsledku

13

Strana od-do

1-13

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

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Místo konání akce

Tatranské Matliare

Datum konání akce

20. 5. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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