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Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method
Inorganic membranes have been developed rapidly in recent years because of excellent anti-fouling performance, high mechanical strength and outstanding resistances to acid and alkali. However, the high production cost still restricts its large-scale industrial application. In this work, an environme...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9504110/ https://www.ncbi.nlm.nih.gov/pubmed/36135886 http://dx.doi.org/10.3390/membranes12090867 |
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author | Wang, Zhen Wang, Xiaojuan Sun, Zhantong Wang, Xiaofeng Wang, Hongdong Gao, Congjie Gao, Xueli |
author_facet | Wang, Zhen Wang, Xiaojuan Sun, Zhantong Wang, Xiaofeng Wang, Hongdong Gao, Congjie Gao, Xueli |
author_sort | Wang, Zhen |
collection | PubMed |
description | Inorganic membranes have been developed rapidly in recent years because of excellent anti-fouling performance, high mechanical strength and outstanding resistances to acid and alkali. However, the high production cost still restricts its large-scale industrial application. In this work, an environmental friendly unidirectional freezing method via introducing camphene as a reusable template was adapted to prepare porous cement membranes (PCMs). The naturally formed and highly aligned porous structures of PCMs could be divided into three parts: a dense layer, a transition layer and a supporting layer. With the solid content rising from 40 wt.% to 60 wt.%, the pore size of the PCMs decreased from 3.34 nm to 3.62 nm, the bovine serum albumin (BSA) rejection increased from 81.3% to 93.5% and water flux decreased from 346.8 L·m(−2)·h(−1) to 167.3 L·m(−2)·h(−1) (0.2 MPa). Significantly, the performance of PCMs was maintained; even the camphene was reused 20 times. Additionally, the recovery rate of camphene could be reached up to 97.16%. Therefore, this method is cost effective and environmental friendly, which endowed the PCMs great potential in water treatment. |
format | Online Article Text |
id | pubmed-9504110 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-95041102022-09-24 Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method Wang, Zhen Wang, Xiaojuan Sun, Zhantong Wang, Xiaofeng Wang, Hongdong Gao, Congjie Gao, Xueli Membranes (Basel) Communication Inorganic membranes have been developed rapidly in recent years because of excellent anti-fouling performance, high mechanical strength and outstanding resistances to acid and alkali. However, the high production cost still restricts its large-scale industrial application. In this work, an environmental friendly unidirectional freezing method via introducing camphene as a reusable template was adapted to prepare porous cement membranes (PCMs). The naturally formed and highly aligned porous structures of PCMs could be divided into three parts: a dense layer, a transition layer and a supporting layer. With the solid content rising from 40 wt.% to 60 wt.%, the pore size of the PCMs decreased from 3.34 nm to 3.62 nm, the bovine serum albumin (BSA) rejection increased from 81.3% to 93.5% and water flux decreased from 346.8 L·m(−2)·h(−1) to 167.3 L·m(−2)·h(−1) (0.2 MPa). Significantly, the performance of PCMs was maintained; even the camphene was reused 20 times. Additionally, the recovery rate of camphene could be reached up to 97.16%. Therefore, this method is cost effective and environmental friendly, which endowed the PCMs great potential in water treatment. MDPI 2022-09-08 /pmc/articles/PMC9504110/ /pubmed/36135886 http://dx.doi.org/10.3390/membranes12090867 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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/). |
spellingShingle | Communication Wang, Zhen Wang, Xiaojuan Sun, Zhantong Wang, Xiaofeng Wang, Hongdong Gao, Congjie Gao, Xueli Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title | Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title_full | Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title_fullStr | Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title_full_unstemmed | Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title_short | Environmental Friendly Fabrication of Porous Cement Membranes via Reusable Camphene-Based Freeze-Casting Method |
title_sort | environmental friendly fabrication of porous cement membranes via reusable camphene-based freeze-casting method |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9504110/ https://www.ncbi.nlm.nih.gov/pubmed/36135886 http://dx.doi.org/10.3390/membranes12090867 |
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