The effect of electrostatically enhanced adsorption of polylysine on a heterogeneous cation-exchange membrane

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43931361" target="_blank" >RIV/60461373:22340/24:43931361 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23640/24:43972156

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0011916424002972?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0011916424002972?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.desal.2024.117586" target="_blank" >10.1016/j.desal.2024.117586</a>

Result language

angličtina

Original language name

The effect of electrostatically enhanced adsorption of polylysine on a heterogeneous cation-exchange membrane

Original language description

Electrostatics influences the interactions between charged biopolymers and ion-exchange membranes. When carrying a charge opposite to that bound in the membrane, the biopolymers readily adsorb on the membrane surface, altering local conditions and, thus, affecting the desalination processes that proceed. To provide a coherent description of the consequences of such adsorption, we experimentally investigate the effects of polylysine as a model cationic polymer on the behavior of a heterogenous cation-exchange membrane. We show that even short exposure to polylysine changes the membrane behavior dramatically. Such a change reflects the influence of the adsorbed polylysine on natural convection, electroconvection, and water splitting. By directly observing the membrane-electrolyte interface, we find polylysine suppresses the beneficial electrical-field-induced convective transport at the membrane-electrolyte interface. Specifically, it diminishes electroconvection dominating at the membrane surface for polylysine-free solutions and attenuates natural convection, dictating the developed flow patterns. At the same time, it provides conditions enhancing a water-splitting reaction, significantly affecting the pH of the solutions adjacent to the membrane. All these effects are dependent on the polylysine concentration. Our study emphasizes the potentially harmful impact of biomolecular adsorption mediated by electrostatic interactions. © 2024 Elsevier B.V.

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

20401 - Chemical engineering (plants, products)

Project

<a href="/en/project/GA20-21263S" target="_blank" >GA20-21263S: Analysis of electrodialysis in milifluidic flow-through systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

DESALINATION

ISSN

0011-9164

e-ISSN

1873-4464

Volume of the periodical

580

Issue of the periodical within the volume

117586

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

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UT code for WoS article

001221244900001

EID of the result in the Scopus database

2-s2.0-85188993498