Enhanced ultrafiltration PES membranes doped with mesostructured functionalized silica particles

Martín, Adrián; Arsuaga, Jesús M.; Roldán, Nuria; Abajo, Javier de; Martı́nez, Ana; Sotto, Arcadio

doi:10.1016/j.desal.2014.10.046

Cited by 47 publications

(22 citation statements)

References 36 publications

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“…To improve the surface attachment of inorganic nanoparticles onto the polymer chains and improve the dispersion stability of the particles inside the polymer phase, the surface of the nanoparticles is typically modified by using various agents [17][18][19][20][21][22]. It has been reported that silica (SiO 2 ) nanoparticles modification by oleic acid (OA), have improved their dispersive capacity in the organic phase significantly [23].…”

Section: Introductionmentioning

confidence: 99%

The effect of functionalized SiO2 nanoparticles on the morphology and triazines separation properties of cellulose acetate membranes

Rakhshan

Pakizeh

2016

Journal of Industrial and Engineering Chemistry

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This study investigates the removal of triazines from an aqueous solution using a novel SiO 2 /CA nanocomposite membrane. The membranes were fabricated with phase inversion by dispersing SiO 2 nanoparticles in the CA casting solutions in the range of 0.01-0.1wt %. ATR-IR, FESEM, AFM, and contact angle analyses were employed to characterize the prepared membranes. The effect of silica nanoparticles on the performance of membranes was studied through the pure water flux and MgSO 4 rejection obtained at an applied pressure of 10 bars. Nanocomposite CA membranes generally showed higher salt rejection and experienced less flux than neat CA membranes, due to morphology changes. In addition, the observed salt rejection tended to enhance as silica loading increased up to a critical concentration. Three triazines (atrazine, propazine, and prometryn) were removed from water by the prepared membranes, and their rejections were compared. The results showed that the triazines rejection was increased by pressure and feed concentration. The effects of the molecules' properties, including molecular size, hydrophobicity and dipole moment, were studied. The results revealed that the rejection of prometryn with a larger molecular size was always higher than the other two triazines. It was observed that there was a direct relation between dipole moment and triazine rejection, while this relation was not observed in the case of hydrophobicity.

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Section: Introductionmentioning

confidence: 99%

The effect of functionalized SiO2 nanoparticles on the morphology and triazines separation properties of cellulose acetate membranes

Rakhshan

Pakizeh

2016

Journal of Industrial and Engineering Chemistry

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“…The porosities of all of the hybrid membranes were significantly enhanced compared with that of M0, which was in agreement with the results of the cross‐sectional morphologies of the hybrid membranes (Figure ). The blended hydrophilic porous fillers can act as pore‐forming agents in the process of membrane formation . In particular, all of the SBA‐g‐P(PEGMA)‐mixed hybrid membranes showed higher porosities.…”

Section: Resultsmentioning

confidence: 99%

“…The blended hydrophilic porous fillers can act as pore-forming agents in the process of membrane formation. 38,60 In particular, all of the SBA-g-P(PEGMA)-mixed hybrid membranes showed higher porosities. This could be explained as the incorporation of the hydrophilic SBA-g-P (PEGMA) fillers facilitating water diffusion into the membrane solution during the membrane formation process.…”

Section: Membrane Porosity and Filler Pore Validity Of The Hybrid Memmentioning

confidence: 97%

“…Non-solvent-induced phase separation (NIPS) 14 was used to prepare all of the PSF/SBA-g-P(PEGMA) hybrid membranes, using PSF as the polymer matrix, N-methyl-2-pyrrolidone (NMP) as solvent, and SBA-g-P(PEGMA) as filler. In brief, a certain amount (0.6 wt % 25,38 ) of SBA-g-P(PEGMA) was dispersed in NMP to obtain a homogeneous suspension via ultrasonic treatment for 30 min. Subsequently, a given weight of PSF powder was added into the resultant suspension, and the mixture was stirred for 12 h in a water bath at 60 C. The control membranes (PSF/PEGMA and PSF/SBA-15) were also prepared under similar conditions.…”

Section: Preparation Of the Hybrid Ultrafiltration Membranesmentioning

confidence: 99%

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Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Wang

et al. 2019

J of Applied Polymer Sci

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A novel polysulfone hybrid ultrafiltration membrane was developed by blending hydrophilic poly[poly(ethylene glycol) methyl ether methacrylate] [P(PEGMA)] grafted mesoporous SBA‐15 [SBA‐g‐P(PEGMA)] as filler. The hydrophilic SBA‐g‐P(PEGMA) fillers were synthesized via surface‐initiated atom transfer radical polymerization. The effects of the SBA‐g‐P(PEGMA) fillers on the prepared hybrid membranes were systematically investigated. Compared with pristine SBA‐15 fillers, SBA‐g‐P(PEGMA) fillers contributed to higher hydrophilicity and a more developed pore structure in the hybrid membranes. Specifically, SBA‐15 grafted with a moderate P(PEGMA) molecular weight could better preserve the valid open‐ended filler pore structure in the membrane matrix, thus facilitating membrane permeability. The pure water flux of the as‐prepared polysulfone (PSF)/SBA‐g‐P(PEGMA) membrane was three times that of the PSF/SBA‐15 membrane (271.7 L m−2 h−1 vs. 88.2 L m−2 h−1) with similar membrane selectivity. Moreover, the PSF/SBA‐g‐P(PEGMA) membranes showed improved antifouling property. This work paves the way for developing high‐performance hybrid membranes by blending of hydrophilic polymer‐functionalized mesoporous fillers in the future. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47353.

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“…One of the most widely applicable membrane separation technologies in industry is the use of a group of ultrafiltration (UF) membranes, particularly for the process of water purification 1, 2 . In view of the requirements for application in the water treatment industry, the modification of UF membrane to generate high flux, improve the resistance to fouling and chemical substances, and provide good mechanical properties is being continuously improved 3, 4 .…”

Section: Introductionmentioning

confidence: 99%

Morphology and performance of polyvinyl chloride membrane modified with Pluronic F127

et al. 2018

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Attempts to modify the morphology of membrane for application in industrial separation are being undertaken by many researchers. The present study discusses the morphological modification of polyvinyl chloride (PVC) membrane by combining the hydrophilic surfactant Pluronic F127 (PF127) in a polymer solution to improve the performance of the membrane. The membrane is formed using the non-solvent induced-phase separation (NIPS) method. PF127 is added to the membrane solution as a membrane modifying agent. The effects of the surfactant concentration in the dope solution on the permeability of pure water, solute rejection, hydrophilic characteristics, and membrane morphology are investigated. Higher concentrations of PF127 had a significant effect on the permeability of pure water. The highest membrane permeation was 45.65 l/m .hr.atm with the addition of 7% PF127 additive. PF127 is successfully proposed as a membrane pore-forming agent in this work; the blending of this additive in appropriate amounts in the polymer solution is adequate to improve the performance of the PVC membrane.

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Enhanced ultrafiltration PES membranes doped with mesostructured functionalized silica particles

Cited by 47 publications

References 36 publications

The effect of functionalized SiO2 nanoparticles on the morphology and triazines separation properties of cellulose acetate membranes

The effect of functionalized SiO2 nanoparticles on the morphology and triazines separation properties of cellulose acetate membranes

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Morphology and performance of polyvinyl chloride membrane modified with Pluronic F127

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