Tailor-made thin film nanocomposite membrane incorporated with graphene oxide using novel interfacial polymerization technique for enhanced water separation

Lai, Gwo Sung; Lau, Woei Jye; Goh, Pei Sean; Ismail, Ahmad Fauzi; Tan, Yi; Chong, Chun Yew; Krause‐Rehberg, R.; Awad, Somia

doi:10.1016/j.cej.2018.03.116

Cited by 262 publications

(99 citation statements)

References 37 publications

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“…Compared to the results obtained in the present work, Lee et al and Lai et al obtained higher values of water permeance (3 and 4.68 L m −2 hr −1 bar −1 respectively, compared to 2.2 L m −2 hr −1 bar −1 , see Figure a and Table S1). However, they used flat noncommercial supports.…”

Section: Resultscontrasting

confidence: 86%

“…Water permeance in reverse osmosis (RO) and nanofiltration (NF) for different thin‐film composite (TFC) membranes compared with the membrane fabricated in this work, highlighted with the orange circle (a). See further information about these membranes in Table S1 . Comparison of m 2 /m 3 ratio and permeate flow per bar and per m 3 of equipment between TFC membranes with the PA thin film formed on the lumen side from other works and the results of the present work, highlighted in orange circles (b).…”

Section: Resultsmentioning

confidence: 72%

“…Lee et al and Lai et al have recently studied the optimization of TFC membranes for reverse osmosis applications. Both of them found ways to maximize the permeance of water without decreasing the rejection values.…”

Section: Resultsmentioning

confidence: 99%

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Nanofiltration thin‐film composite membrane on either the internal or the external surface of a polysulfone hollow fiber

et al. 2020

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The inner and outer surfaces of a porous hollow fiber polysulfone support are compared as substrates for the synthesis of polyamide thin-film composite (TFC) membranes by interfacial polymerization. While both surfaces have pores common of microfiltration membranes, the inner surface has a larger pore diameter than the outer surface (2,700 nm compared to 950 nm). The inner TFC membrane showed higher water nanofiltration permeance than the outer (2.20 ± 0.17 compared to 0.13 ± 0.03 L m −2 hr −1 bar −1 ). This was due to the influence of the porosity and roughness, which were different on both support surfaces. These membranes are interesting because they were synthesized in a hollow fiber support with a high membrane area per volume unit (~6,900 m 2 /m 3 ) and the substrate used was commercial, which means that the TFC membrane obtained is suitable for industrial application. A mathematical simulation of the nanofiltration run with COMSOL Multiphysics 5.3 software confirmed the experimental trends observed. K E Y W O R D S hollow fiber, interfacial polymerization, microfluidics, nanofiltration, thin-film composite

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Section: Resultscontrasting

confidence: 86%

Section: Resultsmentioning

confidence: 72%

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Nanofiltration thin‐film composite membrane on either the internal or the external surface of a polysulfone hollow fiber

et al. 2020

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“…Many studies aimed at improving TFC RO membrane properties by modifying either the PA layer or microporous support have been previously conducted . Because the separation characteristics of TFC membrane are governed mainly by the PA active layer, research focusing on PA layer synthesis and modification has received greater attention.…”

Section: Introductionmentioning

confidence: 99%

“…1,13 Many studies aimed at improving TFC RO membrane properties by modifying either the PA layer or microporous support have been previously conducted. [14][15][16][17] Because the separation characteristics of TFC membrane are governed mainly by the PA active layer, research focusing on PA layer synthesis and modification has received greater attention. There are many synthesis parameters that can be considered for modifying PA layer characteristics, including monomer type and concentration, incorporation of organic or inorganic additives, solvent type, polymerization time, and both curing conditions and method.…”

Section: Introductionmentioning

confidence: 99%

Boron removal and antifouling properties of thin‐film nanocomposite membrane incorporating PECVD‐modified titanate nanotubes

Chong

Lau

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Incorporation of nanofillers into the polyamide (PA) layer of thin‐film composite (TFC) membrane could improve membrane surface properties for enhanced water separation efficiency. However, most nanofillers do not disperse well in organic medium. In this work, the surface of titanate nanotubes (TNTs) was modified via the plasma‐enhanced chemical vapour deposition (PECVD) method in order to promote its dispersion rate (in organic medium) during thin‐film nanocomposite (TFN) membrane fabrication. RESULTS Fourier transform infrared (FTIR) analysis confirmed the surface chemistry of TNTs coated by hexafluorobutyl acrylate (HFBA) or hydroxyethyl methacrylate (HEMA) via PECVD method. The effects of embedding modified TNTs into the PA layer on membrane surface morphology, hydrophilicity and performance were also investigated and the results were further compared with commercial reverse osmosis (RO) membranes. It was found that the incorporation of HFBA‐ and HEMA‐modified TNTs could enhance the membrane water permeability by >25% and >40%, respectively, without compromising their salt rejection. The boron rejections of TFN membranes incorporated with HFBA‐ and HEMA‐modified TNTs meanwhile were recorded at 75.56% and 70.73%, respectively; these values were relatively higher than those for the self‐synthesized TFC (68.57%) and commercial RO membranes (37–39%). The developed TFN membranes also exhibited higher fouling tolerance than the commercial RO membranes, achieving >94% of water flux regeneration as a result of enhanced membrane surface hydrophilicity. CONCLUSION Compared to hydrophilic modification using HEMA, nanofillers modified by hydrophobic HFBA proved more effective at producing a PA layer with better nanofiller distribution, making the resultant TFN membrane more suitable for desalination processes. © 2019 Society of Chemical Industry

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Self‐Sealed Polyamide (PA)/Zinc Imidazole Framework (ZIF) Thin Film Nanocomposite (TFN) Nanofiltration Membranes with Nanoscale Turing Type Structures

Yang

Zhu

Sun

et al. 2019

Adv Materials Inter

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Polyamide (PA) thin‐film composite (TFC) nanofiltration (NF) membranes with superior water permeating nanoscale Turing type networks are formed using preloaded zinc(II) cations as diffusion slower during the interfacial polymerization on polysulfone support. Large nanopores in the size of about 4.3–8.0 Å formed during the interfacial polymerization process are self‐sealed by in situ grown zinc imidazole framework (ZIF) nanocrystals in a counterdiffusion polymerization reaction of Zn(II) cations with imidazole ligands. PA/ZIF mixed matrix NF membranes with superior water permeating networks are formed. Such novel membranes show not only 3–4 fold higher water flux than TFC membranes, but also retain comparably high salt rejection and antifouling resistance capability. The impact of Zn(II) loading levels, counterdiffusion reaction times, and structures of imidazole ligands on the structures and properties of formed TFN‐ZIF membranes are studied.

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Tailor-made thin film nanocomposite membrane incorporated with graphene oxide using novel interfacial polymerization technique for enhanced water separation

Cited by 262 publications

References 37 publications

Nanofiltration thin‐film composite membrane on either the internal or the external surface of a polysulfone hollow fiber

Nanofiltration thin‐film composite membrane on either the internal or the external surface of a polysulfone hollow fiber

Boron removal and antifouling properties of thin‐film nanocomposite membrane incorporating PECVD‐modified titanate nanotubes

Self‐Sealed Polyamide (PA)/Zinc Imidazole Framework (ZIF) Thin Film Nanocomposite (TFN) Nanofiltration Membranes with Nanoscale Turing Type Structures

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