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Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment

Forward osmosis (FO) driven by osmotic pressure difference has great potential in water treatment. However, it remains a challenge to maintain a steady water flux at continuous operation. Herein, a FO and photothermal evaporation (PE) coupling system (FO‐PE) based on high‐performance polyamide FO me...

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Autores principales: Song, Xiangju, Dong, Weichao, Zhang, Yajing, Abdel‐Ghafar, Hamdy Maamoun, Toghan, Arafat, Jiang, Heqing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10191015/
https://www.ncbi.nlm.nih.gov/pubmed/37325603
http://dx.doi.org/10.1002/EXP.20220054
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author Song, Xiangju
Dong, Weichao
Zhang, Yajing
Abdel‐Ghafar, Hamdy Maamoun
Toghan, Arafat
Jiang, Heqing
author_facet Song, Xiangju
Dong, Weichao
Zhang, Yajing
Abdel‐Ghafar, Hamdy Maamoun
Toghan, Arafat
Jiang, Heqing
author_sort Song, Xiangju
collection PubMed
description Forward osmosis (FO) driven by osmotic pressure difference has great potential in water treatment. However, it remains a challenge to maintain a steady water flux at continuous operation. Herein, a FO and photothermal evaporation (PE) coupling system (FO‐PE) based on high‐performance polyamide FO membrane and photothermal polypyrrole nano‐sponge (PPy/sponge) is developed for continuous FO separation with a steady water flux. The PE unit with a photothermal PPy/sponge floating on the surface of draw solution (DS) can continuously in situ concentrate DS by solar‐driven interfacial water evaporation, which effectively offsets the dilution effect due to the injected water from FO unit. A good balance between the permeated water in FO and the evaporated water in PE can be established by coordinately regulating the initial concentration of DS and light intensity. As a consequence, the polyamide FO membrane exhibits a steady water flux of 11.7 L m(–2) h(–1) over time under FO coupling PE condition, effectively alleviating the decline in water flux under FO alone. Additionally, it shows a low reverse salt flux of 3 g m(–2) h(–1). The FO‐PE coupling system utilizing clean and renewable solar energy to achieve a continuous FO separation is significantly meaningful for practical applications.
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spelling pubmed-101910152023-06-14 Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment Song, Xiangju Dong, Weichao Zhang, Yajing Abdel‐Ghafar, Hamdy Maamoun Toghan, Arafat Jiang, Heqing Exploration (Beijing) Research Articles Forward osmosis (FO) driven by osmotic pressure difference has great potential in water treatment. However, it remains a challenge to maintain a steady water flux at continuous operation. Herein, a FO and photothermal evaporation (PE) coupling system (FO‐PE) based on high‐performance polyamide FO membrane and photothermal polypyrrole nano‐sponge (PPy/sponge) is developed for continuous FO separation with a steady water flux. The PE unit with a photothermal PPy/sponge floating on the surface of draw solution (DS) can continuously in situ concentrate DS by solar‐driven interfacial water evaporation, which effectively offsets the dilution effect due to the injected water from FO unit. A good balance between the permeated water in FO and the evaporated water in PE can be established by coordinately regulating the initial concentration of DS and light intensity. As a consequence, the polyamide FO membrane exhibits a steady water flux of 11.7 L m(–2) h(–1) over time under FO coupling PE condition, effectively alleviating the decline in water flux under FO alone. Additionally, it shows a low reverse salt flux of 3 g m(–2) h(–1). The FO‐PE coupling system utilizing clean and renewable solar energy to achieve a continuous FO separation is significantly meaningful for practical applications. John Wiley and Sons Inc. 2022-07-06 /pmc/articles/PMC10191015/ /pubmed/37325603 http://dx.doi.org/10.1002/EXP.20220054 Text en © 2022 The Authors. Exploration published by Henan University and John Wiley & Sons Australia, Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Song, Xiangju
Dong, Weichao
Zhang, Yajing
Abdel‐Ghafar, Hamdy Maamoun
Toghan, Arafat
Jiang, Heqing
Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title_full Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title_fullStr Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title_full_unstemmed Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title_short Coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
title_sort coupling solar‐driven interfacial evaporation with forward osmosis for continuous water treatment
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10191015/
https://www.ncbi.nlm.nih.gov/pubmed/37325603
http://dx.doi.org/10.1002/EXP.20220054
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