Functional stability of novel homogeneous and heterogeneous cation exchange membranes for abiotic and microbial electrochemical technologies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00558514" target="_blank" >RIV/61389013:_____/22:00558514 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0376738822004501?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0376738822004501?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2022.120705" target="_blank" >10.1016/j.memsci.2022.120705</a>

Result language

angličtina

Original language name

Functional stability of novel homogeneous and heterogeneous cation exchange membranes for abiotic and microbial electrochemical technologies

Original language description

Two novel cation exchange membranes (CEM) denoted as PSEBS SU and CF22R14 were examined for two electrochemical applications, and compared to a commercial membrane (Fumasep FKE). Application in microbial electrolysis cells (MEC) and abiotic electrochemical cells (EC) were selected as low and high current density systems (∼1 A m−2 and 50 A m−2, respectively). Hydration number (λ), ion exchange capacity (IEC) and ionic conductivity (σ), as well as changes in these parameters during 10 days of operation were studied. λ was stable after MEC operation, however EC mode caused remarkable changes and a decrease of λ (by −8.2 ± 0.3, −13.8 ± 0.8 and −39.3 ± 8.8% for FKE, PSEBS SU and CF22R14, respectively). The decrease of IEC was significant for each membrane regardless of the operation mode. However, only MEC operation led to reversible functionality losses, whereas EC mode caused permanent decrease of IEC (87.9 ± 2.8, 85.3 ± 3.8 and 46.6 ± 4.4% re-activation efficiency for FKE, PSEBS SU and CF22R14, respectively). The EC operation resulted in more severe loss of σ for each CEM, among which PSEBS SU showed the best re-activation efficiency (74.9 ± 8.1%). In general, the membrane properties were much more impaired during EC operation due to higher current densities.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Journal of Membrane Science

ISSN

0376-7388

e-ISSN

1873-3123

Volume of the periodical

658

Issue of the periodical within the volume

15 September

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

18

Pages from-to

120705

UT code for WoS article

000822729700002

EID of the result in the Scopus database

2-s2.0-85132534294