NDLI: Eco-Friendly OSN Membranes Based on Alginate Salts with Variable Nanofiltration Properties.

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Eco-Friendly OSN Membranes Based on Alginate Salts with Variable Nanofiltration Properties.

Content Provider	Europe PMC
Author	Dmitrieva, Evgenia Raeva, Alisa Razlataya, Daria Anokhina, Tatyana
Editor	Drews, Anja
Copyright Year	2023
Abstract	In this work, membranes for organic solvents nanofiltration (OSN) based on a natural polymer, sodium alginate, were fabricated. They are chemically stable in organic solvents, including aprotic polar solvents. The unique advantage of these membranes is the absence of toxic reagents and solvents during their production. This ensures the safety and environmental friendliness of the production process. It has been shown that an operation as simple as changing the cation in alginate (Cu2+, Fe3+, Cr3+, Al3+, Zn2+, Ca2+) makes it possible to control the transport and separating properties of membranes, depending on the organic solvent being separated. Therefore, to isolate RemazolBrilliant Blue with MM = 626 g·mol−1 from ethanol, membranes based on iron alginate with a rejection R = 97% and a permeability of 1.5 kg·m−2·h−1·bar−1 are the most efficient. For isolation of the same solute from DMF and MP, membranes based on calcium alginate with an R of about 90% and a permeability of 0.1–0.2 kg·m−2·h−1·bar−1 are the most efficient. The resulting membranes based on natural biodegradable sodium alginate are competitive compared to membranes based on synthetic polymers.
Volume Number	13
PubMed Central reference number	PMC9964380
Issue Number	2
PubMed reference number	36837747
Journal	Membranes (Basel)
e-ISSN	20770375
DOI	10.3390/membranes13020244
Language	English
Publisher	MDPI
Publisher Date	2023-02-17
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	organic solvent nanofiltration (OSN) polymeric membranes natural polymers sodium alginate ionic crosslinking metal cations
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Process Chemistry and Technology Filtration and Separation

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