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. 2022 Dec 8;12(1):21234.
doi: 10.1038/s41598-022-25700-6.

Surface modification of thin film composite forward osmosis membrane using graphene nanosheets for water desalination

Fatma Mohamed El-Sayed  1 , Mohamed E A Ali  2 , Heba Isawi  2 , M M Abo Aly  3 , M M S Abo El-Fadl  2
Affiliations

Surface modification of thin film composite forward osmosis membrane using graphene nanosheets for water desalination

Fatma Mohamed El-Sayed et al. Sci Rep. .

Retraction in

Abstract

In this study, the main motivation of this work is desalination of water for irrigation arid area such as Sidri- Baba basins- south Sinai, Egypt. Also, the novelty of this work is modification of TFC surface membrane by mix of HA, DA and GO to get high performance of FO technique. Interfacial polymerization was employed to modify a thin-film composite (TFC) membrane for forward osmosis (FO) applications; moreover, graphene oxide (GO) nanosheets (GONs), a dopamine solution (DA), and naturally accessible humic acid (HA) were modified on a polyethersulfone (PES) substrate. The effects of the different quantities of GO, HA, and DA on the membrane surfaces, as well as their various cross-sectional morphologies and FO-desalination capabilities, were investigated. The integrated TFC membrane containing appropriate GO, HA, and DA blends outperformed the control membrane, obtaining high water flux, and high salt rejection. Furthermore,.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
FTIR spectra of the control, HA/TFC, GO/TFC, DA/TFC, and a mixture of the HA, GO, DA/TFC-modified membranes.
Figure 2
Figure 2
Water contact angles of the control, DA/TFC, GO/TFC, HA/TFC, and HA + DA + GO/TFC-modified membrane surfaces.
Figure 3
Figure 3
SEM images of the cross sections of (a) PES and the (b) TFC, (c) HA/TFC, (d) GO/TFC, (e) DA/TFC, and (f) mixture of the HA, DA, GO/TFC–modified membranes at different magnifications.
Figure 4
Figure 4
Water fluxes of the TFC membranes in the AL-FS mode: (a) different concentrations of MPD (0.5, 1, 2, and 3 g/100 mL), (b) different preparation times of MPD (1, 2, and 3 min), (c) different concentration of TMC (0.05, 0.1, 0.15, and 0.2 g/100 mL), (d) different preparation times of TMC (0.5, 1, and 2 min) and (e) different thicknesses of the membrane (30, 35, and 40 µ).
Figure 5
Figure 5
Pure water flux of TFC with different concentrations of HA from 0.1 to 1 wt%.
Figure 6
Figure 6
Pure water flux of TFC employing different concentrations of GO from 0.1 to 1.5 wt%.
Figure 7
Figure 7
Pure water flux of TFC employing different concentrations of DA from 0.01 to 0.8 wt%.
Figure 8
Figure 8
Pure water flux of TFC employing GO, HA, DA, and mixed membranes.
Figure 9
Figure 9
Antifouling performance of the TFC-FO membrane that was modified with HA, DA, GO, and a mix of HA, DA, and GO.
See this image and copyright information in PMC

References

    1. Ali MEA, Wang L, Wang X, Feng X. Thin film composite membranes embedded with graphene oxide for water desalination. Desalination. 2016;386:67–76. doi: 10.1016/j.desal.02.034. - DOI
    1. Amir S, Hafidi M, Merlina G, Hamdi H, Revel JC. Elemental analysis, FTIR and 13C-NMR of humic acids from sewage sludge composting. Agronomie. 2004;24:13–18. doi: 10.1051/agro:2003054. - DOI
    1. Ang WS, Tiraferri A, Chen KL, Elimelech M. Fouling and cleaning of RO membranes fouled by mixtures of organic foulants simulating wastewater effluent. J. Membr. Sci. 2011;376:196–206. doi: 10.1016/j.memsci.2011.04.020. - DOI
    1. Cath TY, Childress AE, Elimelech M. Forward osmosis: Principles, applications, and recent developments: Review. J. Membr. Sci. 2006;281:70–87. doi: 10.1016/j.memsci.2006.05.048. - DOI
    1. Chang X, Wang Z, Quan S, Xu Y, Jiang Z, Shao L. Exploring the synergetic effects of graphene oxide (GO) and polyvinylpyrrodione (PVP) on poly(vinylylidenefluoride) (PVDF) ultrafiltration membrane performance. Appl. Surf. Sci. 2014;316:537–548. doi: 10.1016/j.apsusc.2014.07.202. - DOI

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