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An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications
The improvement in the overall efficiency of thin-film composite (TFC) reverse osmosis (RO) membranes is limited by their low permeability and sensitivity to degradation by chlorine. In the present study, polypiperazine (PIP), the commonly used amine monomer in preparing commercial TFC nanofiltratio...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618943/ https://www.ncbi.nlm.nih.gov/pubmed/37920753 http://dx.doi.org/10.1039/d3ra06015b |
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author | Sun, Junqing Zhang, Qianwen Xue, Wenjing Ding, Wande Zhang, Kefeng Wang, Shan |
author_facet | Sun, Junqing Zhang, Qianwen Xue, Wenjing Ding, Wande Zhang, Kefeng Wang, Shan |
author_sort | Sun, Junqing |
collection | PubMed |
description | The improvement in the overall efficiency of thin-film composite (TFC) reverse osmosis (RO) membranes is limited by their low permeability and sensitivity to degradation by chlorine. In the present study, polypiperazine (PIP), the commonly used amine monomer in preparing commercial TFC nanofiltration (NF) membranes, was used to regulate the m-phenylenediamine (MPD) based interfacial polymerization (IP) process. The results showed that addition of PIP optimized the micro-structure and surface properties of the polyamide (PA) layer. When the MPD and PIP mass ratio was 1 : 1, the TFC(W-1:1) membrane exhibited 70% flux enhancement compared to pure MPD-based TFC(W-1:0) membranes. Besides, the TFC(W-1:1) membrane exhibited better chlorine-resistant performance since the NaCl rejection declined to just 3.8% while it was 11.3% for TFC(W-1:0) membranes after immersion in 500 ppm NaClO solution for 48 h. Such improvement can be attributed to the increased number of unreacted amine groups and the thickness of the PA layer that PIP brought, which provided a sacrificial protective layer to consume the active chlorine, and thus maintain the integrity of the inner rejection layer. In all, the novelty and purpose of the present work is to find a more simple and scalable method to fabricate high-performance TFC RO membranes by using commonly, cheaply and frequently used materials. |
format | Online Article Text |
id | pubmed-10618943 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106189432023-11-02 An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications Sun, Junqing Zhang, Qianwen Xue, Wenjing Ding, Wande Zhang, Kefeng Wang, Shan RSC Adv Chemistry The improvement in the overall efficiency of thin-film composite (TFC) reverse osmosis (RO) membranes is limited by their low permeability and sensitivity to degradation by chlorine. In the present study, polypiperazine (PIP), the commonly used amine monomer in preparing commercial TFC nanofiltration (NF) membranes, was used to regulate the m-phenylenediamine (MPD) based interfacial polymerization (IP) process. The results showed that addition of PIP optimized the micro-structure and surface properties of the polyamide (PA) layer. When the MPD and PIP mass ratio was 1 : 1, the TFC(W-1:1) membrane exhibited 70% flux enhancement compared to pure MPD-based TFC(W-1:0) membranes. Besides, the TFC(W-1:1) membrane exhibited better chlorine-resistant performance since the NaCl rejection declined to just 3.8% while it was 11.3% for TFC(W-1:0) membranes after immersion in 500 ppm NaClO solution for 48 h. Such improvement can be attributed to the increased number of unreacted amine groups and the thickness of the PA layer that PIP brought, which provided a sacrificial protective layer to consume the active chlorine, and thus maintain the integrity of the inner rejection layer. In all, the novelty and purpose of the present work is to find a more simple and scalable method to fabricate high-performance TFC RO membranes by using commonly, cheaply and frequently used materials. The Royal Society of Chemistry 2023-11-01 /pmc/articles/PMC10618943/ /pubmed/37920753 http://dx.doi.org/10.1039/d3ra06015b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Sun, Junqing Zhang, Qianwen Xue, Wenjing Ding, Wande Zhang, Kefeng Wang, Shan An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title | An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title_full | An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title_fullStr | An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title_full_unstemmed | An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title_short | An economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
title_sort | economical and simple method for preparing highly permeable and chlorine-resistant reverse osmosis membranes with potential commercial applications |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618943/ https://www.ncbi.nlm.nih.gov/pubmed/37920753 http://dx.doi.org/10.1039/d3ra06015b |
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