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Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation

Hollow fiber membranes were produced from a commercial polyvinylidene fluoride (PVDF) polymer, Kynar HSV 900, with a unique sandwich structure consisting of two sponge-like layers connected to the outer and inner skin layers while the middle layer comprises macrovoids. The sponge-like layer allows t...

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Autores principales: Qua, Marn Soon, Zhao, Yan, Zhang, Junyou, Hernandez, Sebastian, Paing, Aung Thet, Mottaiyan, Karikalan, Zuo, Jian, Dhalla, Adil, Chung, Tai-Shung, Gudipati, Chakravarthy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032867/
https://www.ncbi.nlm.nih.gov/pubmed/35448394
http://dx.doi.org/10.3390/membranes12040423
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author Qua, Marn Soon
Zhao, Yan
Zhang, Junyou
Hernandez, Sebastian
Paing, Aung Thet
Mottaiyan, Karikalan
Zuo, Jian
Dhalla, Adil
Chung, Tai-Shung
Gudipati, Chakravarthy
author_facet Qua, Marn Soon
Zhao, Yan
Zhang, Junyou
Hernandez, Sebastian
Paing, Aung Thet
Mottaiyan, Karikalan
Zuo, Jian
Dhalla, Adil
Chung, Tai-Shung
Gudipati, Chakravarthy
author_sort Qua, Marn Soon
collection PubMed
description Hollow fiber membranes were produced from a commercial polyvinylidene fluoride (PVDF) polymer, Kynar HSV 900, with a unique sandwich structure consisting of two sponge-like layers connected to the outer and inner skin layers while the middle layer comprises macrovoids. The sponge-like layer allows the membrane to have good mechanical strength even at low skin thickness and favors water vapor transportation during vacuum membrane distillation (VMD). The middle layer with macrovoids helps to significantly reduce the trans-membrane resistance during water vapor transportation from the feed side to the permeate side. Together, these novel structural characteristics are expected to render the PVDF hollow fiber membranes more efficient in terms of vapor flux as well as mechanical integrity. Using the chemistry and process conditions adopted from previous work, we were able to scale up the membrane fabrication from a laboratory scale of 1.5 kg to a manufacturing scale of 50 kg with consistent membrane performance. The produced PVDF membrane, with a liquid entry pressure (LEPw) of >3 bar and a pure water flux of >30 L/m(2)·hr (LMH) under VMD conditions at 70–80 °C, is perfectly suitable for next-generation high-efficiency membranes for desalination and industrial wastewater applications. The technology translation efforts, including membrane and module scale-up as well as the preliminary pilot-scale validation study, are discussed in detail in this paper.
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spelling pubmed-90328672022-04-23 Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation Qua, Marn Soon Zhao, Yan Zhang, Junyou Hernandez, Sebastian Paing, Aung Thet Mottaiyan, Karikalan Zuo, Jian Dhalla, Adil Chung, Tai-Shung Gudipati, Chakravarthy Membranes (Basel) Article Hollow fiber membranes were produced from a commercial polyvinylidene fluoride (PVDF) polymer, Kynar HSV 900, with a unique sandwich structure consisting of two sponge-like layers connected to the outer and inner skin layers while the middle layer comprises macrovoids. The sponge-like layer allows the membrane to have good mechanical strength even at low skin thickness and favors water vapor transportation during vacuum membrane distillation (VMD). The middle layer with macrovoids helps to significantly reduce the trans-membrane resistance during water vapor transportation from the feed side to the permeate side. Together, these novel structural characteristics are expected to render the PVDF hollow fiber membranes more efficient in terms of vapor flux as well as mechanical integrity. Using the chemistry and process conditions adopted from previous work, we were able to scale up the membrane fabrication from a laboratory scale of 1.5 kg to a manufacturing scale of 50 kg with consistent membrane performance. The produced PVDF membrane, with a liquid entry pressure (LEPw) of >3 bar and a pure water flux of >30 L/m(2)·hr (LMH) under VMD conditions at 70–80 °C, is perfectly suitable for next-generation high-efficiency membranes for desalination and industrial wastewater applications. The technology translation efforts, including membrane and module scale-up as well as the preliminary pilot-scale validation study, are discussed in detail in this paper. MDPI 2022-04-14 /pmc/articles/PMC9032867/ /pubmed/35448394 http://dx.doi.org/10.3390/membranes12040423 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 Article
Qua, Marn Soon
Zhao, Yan
Zhang, Junyou
Hernandez, Sebastian
Paing, Aung Thet
Mottaiyan, Karikalan
Zuo, Jian
Dhalla, Adil
Chung, Tai-Shung
Gudipati, Chakravarthy
Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title_full Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title_fullStr Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title_full_unstemmed Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title_short Novel Sandwich-Structured Hollow Fiber Membrane for High-Efficiency Membrane Distillation and Scale-Up for Pilot Validation
title_sort novel sandwich-structured hollow fiber membrane for high-efficiency membrane distillation and scale-up for pilot validation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032867/
https://www.ncbi.nlm.nih.gov/pubmed/35448394
http://dx.doi.org/10.3390/membranes12040423
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