Polyol-modified biopolymer membranes of sodium alginate and chitosan for CO2/N2 and CO2/O2 separation: Linking structure and gas transport performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F25%3A00014126" target="_blank" >RIV/46747885:24410/25:00014126 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/25:00014126

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666821125002467" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666821125002467</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceja.2025.100950" target="_blank" >10.1016/j.ceja.2025.100950</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polyol-modified biopolymer membranes of sodium alginate and chitosan for CO2/N2 and CO2/O2 separation: Linking structure and gas transport performance

Popis výsledku v původním jazyce

This work presents a comparative assessment of two biopolymers, focusing on the relationship between structural modifications and their impact on gas separation performance. Sodium alginate and chitosan membranes were developed and thoroughly characterized after modification with varying amounts (0–60 wt.%) of CO2-philic polyol additives, glycerol and sorbitol, for the selective separation of carbon dioxide (CO2) from light gases such as nitrogen (N2) and oxygen (O2). The membranes were prepared via solvent evaporation using polymer concentrations ranging from 0.5 to 1.5 wt.%. Their structural, thermal, and mechanical properties were analysed using SEM, FTIR, DSC, and tensile testing. Key gas transport parameters: permeability, diffusivity, solubility, and ideal selectivity, were systematically evaluated. The results demonstrate that the polyol content has a strong influence on membrane performance, revealing a clear correlation between structural features and gas separation efficiency. The highest CO2/N2 selectivity (6.3) and CO2/O2 selectivity (4.3) were obtained for the alginate membrane containing 60 wt.% sorbitol, with a corresponding CO2 permeability of 38.6 Barrer. Although the overall separation performance remains moderate, the findings provide valuable insights into the role of polyol modifiers in biopolymer-based membranes, contributing to a deeper understanding of gas transport in bio-derived systems.

Název v anglickém jazyce

Polyol-modified biopolymer membranes of sodium alginate and chitosan for CO2/N2 and CO2/O2 separation: Linking structure and gas transport performance

Popis výsledku anglicky

This work presents a comparative assessment of two biopolymers, focusing on the relationship between structural modifications and their impact on gas separation performance. Sodium alginate and chitosan membranes were developed and thoroughly characterized after modification with varying amounts (0–60 wt.%) of CO2-philic polyol additives, glycerol and sorbitol, for the selective separation of carbon dioxide (CO2) from light gases such as nitrogen (N2) and oxygen (O2). The membranes were prepared via solvent evaporation using polymer concentrations ranging from 0.5 to 1.5 wt.%. Their structural, thermal, and mechanical properties were analysed using SEM, FTIR, DSC, and tensile testing. Key gas transport parameters: permeability, diffusivity, solubility, and ideal selectivity, were systematically evaluated. The results demonstrate that the polyol content has a strong influence on membrane performance, revealing a clear correlation between structural features and gas separation efficiency. The highest CO2/N2 selectivity (6.3) and CO2/O2 selectivity (4.3) were obtained for the alginate membrane containing 60 wt.% sorbitol, with a corresponding CO2 permeability of 38.6 Barrer. Although the overall separation performance remains moderate, the findings provide valuable insights into the role of polyol modifiers in biopolymer-based membranes, contributing to a deeper understanding of gas transport in bio-derived systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal Advances>

ISSN

2666-8211

e-ISSN

—

Svazek periodika

24

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

17

Strana od-do

—

Kód UT WoS článku

001617818900001

EID výsledku v databázi Scopus

2-s2.0-105021328317