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Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves

The major challenges in forward osmosis (FO) are low water flux, high specific reverse solute flux (SRSF), and membrane fouling. The present work addresses these problems by the incorporation of graphene quantum dots (GQDs) in the polyamide (PA) layer of thin-film composite (TFC) membranes, as well...

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Autores principales: Saleem, Haleema, Saud, Asif, Munira, Nazmin, Goh, Pei Sean, Ismail, Ahmad Fauzi, Siddiqui, Hammadur Rahman, Zaidi, Syed Javaid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565292/
https://www.ncbi.nlm.nih.gov/pubmed/36234646
http://dx.doi.org/10.3390/nano12193519
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author Saleem, Haleema
Saud, Asif
Munira, Nazmin
Goh, Pei Sean
Ismail, Ahmad Fauzi
Siddiqui, Hammadur Rahman
Zaidi, Syed Javaid
author_facet Saleem, Haleema
Saud, Asif
Munira, Nazmin
Goh, Pei Sean
Ismail, Ahmad Fauzi
Siddiqui, Hammadur Rahman
Zaidi, Syed Javaid
author_sort Saleem, Haleema
collection PubMed
description The major challenges in forward osmosis (FO) are low water flux, high specific reverse solute flux (SRSF), and membrane fouling. The present work addresses these problems by the incorporation of graphene quantum dots (GQDs) in the polyamide (PA) layer of thin-film composite (TFC) membranes, as well as by using an innovative polyethersulfone nanofiber support for the TFC membrane. The GQDs were prepared from eucalyptus leaves using a facile hydrothermal method that requires only deionized water, without the need for any organic solvents or reducing agents. The nanofiber support of the TFC membranes was prepared using solution blow spinning (SBS). The polyamide layer with GQDs was deposited on top of the nanofiber support through interfacial polymerization. This is the first study that reports the fouling resistance of the SBS-nanofiber-supported TFC membranes. The effect of various GQD loadings on the TFC FO membrane performance, its long-term FO testing, cleaning efficiency, and organic fouling resistance were analyzed. It was noted that the FO separation performance of the TFC membranes was improved with the incorporation of 0.05 wt.% GQDs. This study confirmed that the newly developed thin-film nanocomposite membranes demonstrated increased water flux and salt rejection, reduced SRSF, and good antifouling performance in the FO process.
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spelling pubmed-95652922022-10-15 Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves Saleem, Haleema Saud, Asif Munira, Nazmin Goh, Pei Sean Ismail, Ahmad Fauzi Siddiqui, Hammadur Rahman Zaidi, Syed Javaid Nanomaterials (Basel) Article The major challenges in forward osmosis (FO) are low water flux, high specific reverse solute flux (SRSF), and membrane fouling. The present work addresses these problems by the incorporation of graphene quantum dots (GQDs) in the polyamide (PA) layer of thin-film composite (TFC) membranes, as well as by using an innovative polyethersulfone nanofiber support for the TFC membrane. The GQDs were prepared from eucalyptus leaves using a facile hydrothermal method that requires only deionized water, without the need for any organic solvents or reducing agents. The nanofiber support of the TFC membranes was prepared using solution blow spinning (SBS). The polyamide layer with GQDs was deposited on top of the nanofiber support through interfacial polymerization. This is the first study that reports the fouling resistance of the SBS-nanofiber-supported TFC membranes. The effect of various GQD loadings on the TFC FO membrane performance, its long-term FO testing, cleaning efficiency, and organic fouling resistance were analyzed. It was noted that the FO separation performance of the TFC membranes was improved with the incorporation of 0.05 wt.% GQDs. This study confirmed that the newly developed thin-film nanocomposite membranes demonstrated increased water flux and salt rejection, reduced SRSF, and good antifouling performance in the FO process. MDPI 2022-10-08 /pmc/articles/PMC9565292/ /pubmed/36234646 http://dx.doi.org/10.3390/nano12193519 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
Saleem, Haleema
Saud, Asif
Munira, Nazmin
Goh, Pei Sean
Ismail, Ahmad Fauzi
Siddiqui, Hammadur Rahman
Zaidi, Syed Javaid
Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title_full Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title_fullStr Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title_full_unstemmed Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title_short Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves
title_sort improved forward osmosis performance of thin film composite membranes with graphene quantum dots derived from eucalyptus tree leaves
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565292/
https://www.ncbi.nlm.nih.gov/pubmed/36234646
http://dx.doi.org/10.3390/nano12193519
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