A homogeneous polysulfone nanofiltration membrane with excellent chlorine resistance for removal of Na2SO4 from brine in chloralkali process

Yuan, Haoge; Liu, Tian-Yin; Liu, Yuan-Yuan; Wang, Xiaolin

doi:10.1016/j.desal.2015.10.006

Cited by 27 publications

(10 citation statements)

References 42 publications

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“…Another shortcoming of the coating method is that the solvent used to coat the polymer must wet the membranes and must not dissolve or swell the ultrafiltration support [12]. Although membranes prepared via IP and coating techniques have been well received by industry, the ability to make integrally skinned asymmetric membranes via a singlestep fabrication process [12][13][14] is of broad interest. Asymmetric membranes generated by phase inversion have been applied in the Abbreviations: AFM, atomic force microscopy; A, effective membrane area (m 2 ); C p , concentration of the permeation (mg mL À 1 ); C f , concentration of the feed (mg mL À 1 ); DMF, N,N-dimethylformamide; F, pure water flux (L m À 2 h À 1 ); h, hour; IP, interfacial polymerization; L, liter; MW, molecular weight; MV, methyl violet; MWCO, molecular weight cut off; NF, nanofiltration; PEGDGE, poly (ethylene glycol) diglycidyl ether; PEI, polyethyleneimine; PEG, polyethylene glycol; RO, reverse osmosis; r s , stokes radius; s, second; t, testing time (h); PES-TA, cardo poly (arylene ether sulfone) with pendant tertiary amine groups; THF, tetrahydrofuran; V, volume of permeate water (L); XPS, X-ray photoelectron spectroscopy n Corresponding author at: Key Laboratory of Ecomaterials, Changchun Institute desalination process [6] and organic solvent nanofiltration (OSN) [9,15].…”

Section: Introductionmentioning

confidence: 99%

Green fabrication of a positively charged nanofiltration membrane by grafting poly(ethylene imine) onto a poly (arylene ether sulfone) membrane containing tertiary amine groups

Zhu

Zhang

Zheng

et al. 2016

Journal of Membrane Science

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a b s t r a c tA green method to prepare asymmetric positively charged poly(arylene ether sulfone) nanofiltration (NF) membranes was explored by grafting water-soluble poly (ethylene imine) (PEI) onto a poly (arylene ether sulfone) membrane containing tertiary amine groups (PES-TA) and cross-linking with poly(ethylene glycol) diglycidyl ether (PEGDGE). The modifications were shown to increase the positive charge and decrease the pore size of the PES-TA substrate. The optimized NF membrane displayed a pure water flux of 15.5 L m À 2 h À 1 . Membrane rejection NaCl, MgCl 2 , and methyl violet (MV) (at a constant pressure of 4 bar) were measured to be 46.2%, 94.9%, and 99.8%, respectively. Moreover, the membrane maintained excellent chlorine resistance during 100 h of exposure to chlorine. Thus, the membrane shows potential for water desalination and purification applications.

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Section: Introductionmentioning

confidence: 99%

Green fabrication of a positively charged nanofiltration membrane by grafting poly(ethylene imine) onto a poly (arylene ether sulfone) membrane containing tertiary amine groups

Zhu

Zhang

Zheng

et al. 2016

Journal of Membrane Science

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“…The initial decomposition temperatures of BC, BCM, and IP-NF-BCM were 285.67, 270.73, and 298.12 °C, respectively, and the corresponding maximum decomposition temperatures were 370.42, 342.99, and 350.48 °C, respectively. The results show that compared with the original bamboo cellulose (BC), the thermal stability of the regenerated cellulose (BCM) was slightly lower, which might be caused by cellulose degradation in the dissolution and regeneration processes. ,, However, it is interesting to note that the IP-NF-BCM had improved thermal stability compared to BCM, probably due to the strong interaction between the BCM support layer and the polyamide layer.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Cellulose-Based Nanofiltration Membranes by Interfacial Polymerization with Piperazine and Trimesoyl Chloride

Shi

Liu

Huang

et al. 2018

ACS Sustainable Chem. Eng.

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A hydrophilic bamboo cellulose nanofiltration membrane (IP-NF-BCM) was prepared through interfacial polymerization (IP) of amino-functional piperazine (PIP) and 1,3,5-trimesoyl chloride (TMC) on a cellulose surface. The in situ formation of polyamide into the mesoporous structure of the regenerated cellulose film created a uniform microporous membrane, which can be used for water softening by nanofiltration. The interfacial polymerization reaction conditions were optimized in terms of the performance of resultant nanofiltration membranes. The chemical structure, morphology, and surface charge of the composite membranes were characterized based on thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), atomic force microscopy (AFM), nuclear magnetic resonance (NMR), and Brunauer–Emmett–Teller (BET) nitrogen absorption. The water permeation and salt rejection capability of the bamboo cellulose thin-film-composite nanofiltration membranes were evaluated using 500 ppm salt solutions at 0.5 MPa pressure. Results show that the rejection rate for NaCl reached 40% and water flux reached 15.64 L/(m2·h). The average pore size of the bamboo cellulose thin-film-composite membranes was 1.0 nm.

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“…The NF membranes were prepared using phase inversion technique as reported in literature [34,35]. The f-GO was dispersed in DMF under vigorous stirring and sonication.…”

Section: Preparation Of Composite Nf Membranementioning

confidence: 99%

“…Some pores are obvious inside the matrix. Permeation may not take place easily when the PSU membrane is tested in an aqueous medium containing some solutes [12]. It may be referred to repulsive forces between PSU and water.…”

Section: Characterization Of Nanocomposite Nf Membranesmentioning

confidence: 99%

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Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

Abdelhamid

El‐Sayed

Khalil

2020

Journal of Polymer Engineering

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Composite-nanofiltration membranes based on polysulfone (PSU) and functionalized graphene oxide (f-GO) were prepared for dye removal from aqueous media. Graphene oxide (GO) was introduced to enhance the performance of these membranes. GO was functionalized using an aminated heterocyclic compound, namely 6-amino-4-(4-nitrophenyl)-3-methyl-4-phenyl-4,7-dihydro-1H-pyrazolo-[3,4-b]pyridine-5carbonitrile. The f-GO was incorporated into the PSU membrane matrix in different weight ratios (0.25, 0.5, 1, 2 and 4 wt %). Characterizing the produced membranes with scanning electron microscope, Fourier Transform Infrared - Attenuated Total Reflectance (FTIR-ATR) and X-ray diffraction indicated the well dispersion of f-GO in the membrane matrix. The obtained membranes were applied to remove Congo red and methylene blue, as typical anionic and cationic dyes respectively from water. The modified membranes showed superior efficiency in terms of water flux and dye rejection upon being compared with the control membrane. The composite membranes loaded with f-GO exhibited promising dye removal efficiency for both dyes.

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A homogeneous polysulfone nanofiltration membrane with excellent chlorine resistance for removal of Na2SO4 from brine in chloralkali process

Cited by 27 publications

References 42 publications

Green fabrication of a positively charged nanofiltration membrane by grafting poly(ethylene imine) onto a poly (arylene ether sulfone) membrane containing tertiary amine groups

Green fabrication of a positively charged nanofiltration membrane by grafting poly(ethylene imine) onto a poly (arylene ether sulfone) membrane containing tertiary amine groups

Preparation and Characterization of Cellulose-Based Nanofiltration Membranes by Interfacial Polymerization with Piperazine and Trimesoyl Chloride

Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

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