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High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes
Membranes for membrane distillation (MD) are mostly made of polymeric and ceramic materials. We demonstrate here that the laterally-compressed, vertically-aligned CNTs (VACNT) obtainable from a CNT forest are an excellent membrane material for vacuum membrane distillation (VMD). The VACNT structure...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8978618/ https://www.ncbi.nlm.nih.gov/pubmed/35424500 http://dx.doi.org/10.1039/d1ra08042c |
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author | Jung, Woosang Choe, Younjeong Kim, Taewoo Ok, Jong G. Lee, Hong H. Kim, Yong Hyup |
author_facet | Jung, Woosang Choe, Younjeong Kim, Taewoo Ok, Jong G. Lee, Hong H. Kim, Yong Hyup |
author_sort | Jung, Woosang |
collection | PubMed |
description | Membranes for membrane distillation (MD) are mostly made of polymeric and ceramic materials. We demonstrate here that the laterally-compressed, vertically-aligned CNTs (VACNT) obtainable from a CNT forest are an excellent membrane material for vacuum membrane distillation (VMD). The VACNT structure provides interstices between CNTs for extracting vaporized water molecules, while efficiently filtering the impurity salts. The VACNT membrane is shown to deliver excellent performance when tested for the desalination of 3.5 wt% NaCl water solution, as exemplified by the permeability of 68 LMH (liter per square meter per hour) achieved at the salt rejection of over 99.8% at 65 °C. We also demonstrate that the VACNT membrane performance can be maintained with time with the aid of a simple cleaning procedure, which bodes well for a long lifetime of the membrane for VMD application. |
format | Online Article Text |
id | pubmed-8978618 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-89786182022-04-13 High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes Jung, Woosang Choe, Younjeong Kim, Taewoo Ok, Jong G. Lee, Hong H. Kim, Yong Hyup RSC Adv Chemistry Membranes for membrane distillation (MD) are mostly made of polymeric and ceramic materials. We demonstrate here that the laterally-compressed, vertically-aligned CNTs (VACNT) obtainable from a CNT forest are an excellent membrane material for vacuum membrane distillation (VMD). The VACNT structure provides interstices between CNTs for extracting vaporized water molecules, while efficiently filtering the impurity salts. The VACNT membrane is shown to deliver excellent performance when tested for the desalination of 3.5 wt% NaCl water solution, as exemplified by the permeability of 68 LMH (liter per square meter per hour) achieved at the salt rejection of over 99.8% at 65 °C. We also demonstrate that the VACNT membrane performance can be maintained with time with the aid of a simple cleaning procedure, which bodes well for a long lifetime of the membrane for VMD application. The Royal Society of Chemistry 2021-12-20 /pmc/articles/PMC8978618/ /pubmed/35424500 http://dx.doi.org/10.1039/d1ra08042c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Jung, Woosang Choe, Younjeong Kim, Taewoo Ok, Jong G. Lee, Hong H. Kim, Yong Hyup High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title | High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title_full | High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title_fullStr | High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title_full_unstemmed | High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title_short | High-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
title_sort | high-permeability vacuum membrane distillation utilizing mechanically compressed carbon nanotube membranes |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8978618/ https://www.ncbi.nlm.nih.gov/pubmed/35424500 http://dx.doi.org/10.1039/d1ra08042c |
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