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The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination

Reverse osmosis has become the most prevalent approach to seawater desalination. It is still limited by the permeability-selectivity trade-off of the membranes and the energy consumption in the operation process. Recently, an efficient ionic sieving with high performance was realized by utilizing th...

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Autores principales: Liu, Chang, Liu, Hui, Ma, Pengfei, Liu, Yan, Cai, Ruochong, Yin, Ran, Zhang, Biao, Wei, Shiqi, Miao, Huifang, Cao, Liuxuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143191/
https://www.ncbi.nlm.nih.gov/pubmed/35629589
http://dx.doi.org/10.3390/ma15103561
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author Liu, Chang
Liu, Hui
Ma, Pengfei
Liu, Yan
Cai, Ruochong
Yin, Ran
Zhang, Biao
Wei, Shiqi
Miao, Huifang
Cao, Liuxuan
author_facet Liu, Chang
Liu, Hui
Ma, Pengfei
Liu, Yan
Cai, Ruochong
Yin, Ran
Zhang, Biao
Wei, Shiqi
Miao, Huifang
Cao, Liuxuan
author_sort Liu, Chang
collection PubMed
description Reverse osmosis has become the most prevalent approach to seawater desalination. It is still limited by the permeability-selectivity trade-off of the membranes and the energy consumption in the operation process. Recently, an efficient ionic sieving with high performance was realized by utilizing the bi-unipolar transport behaviour and strong ion depletion of heterogeneous structures in 2D materials. A perfect salt rejection rate of 97.0% and a near-maximum water flux of 1529 L m(−2) h(−1) bar(−1) were obtained. However, the energy consumption of the heterogeneous desalination setup is a very important factor, and it remains largely unexplored. Here, the geometric-dimension-dependent ion transport in planar heterogeneous structures is reported. The two competitive ion migration behaviours during the desalination process, ion-depletion-dominated and electric-field-dominated ion transport, are identified for the first time. More importantly, these two ion-transport behaviours can be regulated. The excellent performance of combined high rejection rate, high water flux and low energy consumption can be obtained under the synergy of voltage, pressure and geometric dimension. With the appropriate optimization, the energy consumption can be reduced by 2 orders of magnitude, which is 50% of the industrial energy consumption. These findings provide beneficial insight for the application and optimized design of low-energy-consumption and portable water desalination devices.
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spelling pubmed-91431912022-05-29 The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination Liu, Chang Liu, Hui Ma, Pengfei Liu, Yan Cai, Ruochong Yin, Ran Zhang, Biao Wei, Shiqi Miao, Huifang Cao, Liuxuan Materials (Basel) Article Reverse osmosis has become the most prevalent approach to seawater desalination. It is still limited by the permeability-selectivity trade-off of the membranes and the energy consumption in the operation process. Recently, an efficient ionic sieving with high performance was realized by utilizing the bi-unipolar transport behaviour and strong ion depletion of heterogeneous structures in 2D materials. A perfect salt rejection rate of 97.0% and a near-maximum water flux of 1529 L m(−2) h(−1) bar(−1) were obtained. However, the energy consumption of the heterogeneous desalination setup is a very important factor, and it remains largely unexplored. Here, the geometric-dimension-dependent ion transport in planar heterogeneous structures is reported. The two competitive ion migration behaviours during the desalination process, ion-depletion-dominated and electric-field-dominated ion transport, are identified for the first time. More importantly, these two ion-transport behaviours can be regulated. The excellent performance of combined high rejection rate, high water flux and low energy consumption can be obtained under the synergy of voltage, pressure and geometric dimension. With the appropriate optimization, the energy consumption can be reduced by 2 orders of magnitude, which is 50% of the industrial energy consumption. These findings provide beneficial insight for the application and optimized design of low-energy-consumption and portable water desalination devices. MDPI 2022-05-16 /pmc/articles/PMC9143191/ /pubmed/35629589 http://dx.doi.org/10.3390/ma15103561 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
Liu, Chang
Liu, Hui
Ma, Pengfei
Liu, Yan
Cai, Ruochong
Yin, Ran
Zhang, Biao
Wei, Shiqi
Miao, Huifang
Cao, Liuxuan
The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title_full The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title_fullStr The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title_full_unstemmed The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title_short The Optimization of the Transition Zone of the Planar Heterogeneous Interface for High-Performance Seawater Desalination
title_sort optimization of the transition zone of the planar heterogeneous interface for high-performance seawater desalination
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143191/
https://www.ncbi.nlm.nih.gov/pubmed/35629589
http://dx.doi.org/10.3390/ma15103561
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