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Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance
Pulping and papermaking generate large amounts of waste in the form of lignosulfonates which have limited valorized applications so far. Herein, we report a novel lignosulfonate‐based nanofiltration membrane, prepared by using polyethylenimine (PEI) and sodium lignosulfonate (SL) via a layer‐by‐laye...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8182288/ https://www.ncbi.nlm.nih.gov/pubmed/34140852 http://dx.doi.org/10.1002/elsc.202000102 |
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author | Liu, Wangqu Geng, Xin Li, Saisai Zhan, Xia Li, Jiding Wang, Luying Lei, Jiandu |
author_facet | Liu, Wangqu Geng, Xin Li, Saisai Zhan, Xia Li, Jiding Wang, Luying Lei, Jiandu |
author_sort | Liu, Wangqu |
collection | PubMed |
description | Pulping and papermaking generate large amounts of waste in the form of lignosulfonates which have limited valorized applications so far. Herein, we report a novel lignosulfonate‐based nanofiltration membrane, prepared by using polyethylenimine (PEI) and sodium lignosulfonate (SL) via a layer‐by‐layer (LbL) self‐assembly. As a low‐cost and renewable natural polyelectrolyte, SL is selected to replace the synthetic polyelectrolyte commonly used in the conventional LbL fabrication for composite membranes. The prepared LbL (PEI/SL)(7) membranes were crosslinked by glutaraldehyde (GA) to obtain (PEI/SL)(7)‐GA membranes with compact selective layer. We characterized (PEI/SL)(7) and (PEI/SL)(7)‐GA membranes to study the chemical compositions, morphologies, and surface hydrophilicity. To improve the nanofiltration performances of the (PEI/SL)(7)‐GA membranes for water desalination, we investigated the effects of the crosslinking time, GA concentration and the NaCl supporting electrolyte on membrane structure and performance. The optimized (PEI/SL)(7)‐GA membrane exhibited a permeating flux up to 39.6 L/(m(2)·h) and a rejection of 91.7% for the MgSO(4) aqueous solution 2.0 g/L concentration, showing its promising potential for water desalination. This study provides a new approach to applying the underdeveloped lignin‐based biomass as green membrane materials for water treatment. |
format | Online Article Text |
id | pubmed-8182288 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-81822882021-06-16 Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance Liu, Wangqu Geng, Xin Li, Saisai Zhan, Xia Li, Jiding Wang, Luying Lei, Jiandu Eng Life Sci Research Articles Pulping and papermaking generate large amounts of waste in the form of lignosulfonates which have limited valorized applications so far. Herein, we report a novel lignosulfonate‐based nanofiltration membrane, prepared by using polyethylenimine (PEI) and sodium lignosulfonate (SL) via a layer‐by‐layer (LbL) self‐assembly. As a low‐cost and renewable natural polyelectrolyte, SL is selected to replace the synthetic polyelectrolyte commonly used in the conventional LbL fabrication for composite membranes. The prepared LbL (PEI/SL)(7) membranes were crosslinked by glutaraldehyde (GA) to obtain (PEI/SL)(7)‐GA membranes with compact selective layer. We characterized (PEI/SL)(7) and (PEI/SL)(7)‐GA membranes to study the chemical compositions, morphologies, and surface hydrophilicity. To improve the nanofiltration performances of the (PEI/SL)(7)‐GA membranes for water desalination, we investigated the effects of the crosslinking time, GA concentration and the NaCl supporting electrolyte on membrane structure and performance. The optimized (PEI/SL)(7)‐GA membrane exhibited a permeating flux up to 39.6 L/(m(2)·h) and a rejection of 91.7% for the MgSO(4) aqueous solution 2.0 g/L concentration, showing its promising potential for water desalination. This study provides a new approach to applying the underdeveloped lignin‐based biomass as green membrane materials for water treatment. John Wiley and Sons Inc. 2021-04-02 /pmc/articles/PMC8182288/ /pubmed/34140852 http://dx.doi.org/10.1002/elsc.202000102 Text en © 2021 The Authors. Engineering in Life Sciences published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Liu, Wangqu Geng, Xin Li, Saisai Zhan, Xia Li, Jiding Wang, Luying Lei, Jiandu Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title | Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title_full | Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title_fullStr | Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title_full_unstemmed | Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title_short | Preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
title_sort | preparation of lignosulfonate‐based nanofiltration membranes with improved water desalination performance |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8182288/ https://www.ncbi.nlm.nih.gov/pubmed/34140852 http://dx.doi.org/10.1002/elsc.202000102 |
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