Perspectives of the industrial application of homogeneous and heterogeneous bipolar membranes

Result code in 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>

Result on the web

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

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Perspectives of the industrial application of homogeneous and heterogeneous bipolar membranes

Original language description

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.

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

20401 - Chemical engineering (plants, products)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Article name in the collection

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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Number of pages

13

Pages from-to

1-13

Publisher name

Slovak Society of Chemical Engineering

Place of publication

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Event location

Tatranské Matliare

Event date

May 20, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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