Hybrid cross-linked chitosan/protonated-proline:glucose DES membranes with superior pervaporation performance for ethanol dehydration

Roberto Castro-Muñoz; Emilia Gontarek-Castro; Jakub Karczewski; René Cabezas; Gastón Merlet; Claudio Araya-Lopez; Grzegorz Boczkaj

doi:10.1016/j.molliq.2022.119499

Hybrid cross-linked chitosan/protonated-proline:glucose DES membranes with superior pervaporation performance for ethanol dehydration

Abstract

This work explores a protonated L-proline:glucose (molar ratio 5:1) deep eutectic solvent (DES) in fabricating biopolymer membranes utilizing chitosan (CS). Initially, the miscibility of CS and DES to prepare homogeneous dense blend membranes has been investigated. Different techniques, such as scanning electron microscopy, contact angle (CA), atomic force microscopy (AFM), Fourier transformed infrared spectroscopy (FTIR) and swelling degree (uptake), were used to characterize the structure of the resulting membranes. Within the pervaporation performance for ethanol dehydration, Arrhenius and mass transfer analysis were analysed in detail. Interestingly, the addition of DESs provided superior performance to crosslinked CS: DES membranes compared with the ones lacking DES. Based on the morphology and properties observed, this new concept of CS-based membranes can be alternatively applied in other solvent separations requiring hydrophilic membranes.

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Authors (7)

Roberto Castro-Muñoz
Emilia Gontarek-Castro
Jakub Karczewski dr hab. inż.
René Cabezas
- Departamento de Química Ambiental, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción, Chile
Gastón Merlet
- Departamento de Agroindustrias, Facultad de Ingeniería Agrícola, Universidad de Concepción, Chillán, Chile
Claudio Araya-Lopez
- Laboratory of Membrane Separation Processes (LabProSeM), Department of Chemical Engineering, University of Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, 9170022, Estación Central, Región Metropolitana, Chile
Grzegorz Boczkaj dr hab. inż.

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Articles

Type:

artykuły w czasopismach

Published in:

JOURNAL OF MOLECULAR LIQUIDS no. 360,
ISSN: 0167-7322

Language:

English

Publication year:

2022

Bibliographic description:

Castro-Muñoz R., Gontarek-Castro E., Karczewski J., Cabezas R., Merlet G., Araya-Lopez C., Boczkaj G.: Hybrid cross-linked chitosan/protonated-proline:glucose DES membranes with superior pervaporation performance for ethanol dehydration// JOURNAL OF MOLECULAR LIQUIDS -Vol. 360, (2022), s.119499-

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