Improvement in flux and antifouling properties of PVC ultrafiltration membranes by incorporation of zinc oxide (ZnO) nanoparticles

Rabiee, Hesamoddin; Vatanpour, Vahid; Farahani, Mohammad Hossein Davood Abadi; Zarrabi, Hamed

doi:10.1016/j.seppur.2015.10.015

Cited by 231 publications

(95 citation statements)

References 58 publications

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“…In fact, the contact angles for these membranes reduced as the concentration of ZnO nanoparticles increased from 2% (M‐2 and M‐6) to 5% (M‐5 and M‐9). Our results came in agreement with a previous study done by Rabiee et al in which it was seen that incorporating of ZnO nanoparticles in polyvinyl chloride (PVC) membrane caused a reduction in the contact angle for the PVC‐ZnO ultrafiltration membranes in comparison with pure PVC …”

Section: Resultssupporting

confidence: 93%

Enhanced antifouling and anticoagulant properties of grafted biomolecule polyethersulfone membranes

Alenazi

Alamry

Hussein

et al. 2019

Polymers for Advanced Techs

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Polyethersulfone (PES) has been widely used in membrane technology and used to purify water in water treatments application or as a dialyzer to purify blood in hemodialysis. In this work, PES was chemically modified by separately grafting two biomolecules, 4‐aminobenzenesulfonamide (ABS), and 4‐amino‐N‐(5‐methylisoxazol‐3‐yl)benzenesulfonamide (AMBS), on PES backbone, and these modified membranes were blended to unmodified PES, in 1:1 ratio, in order to obtain PES‐b‐PES‐ABS and PES‐b‐PES‐AMBS membranes. The first aim of this study is to measure the anticoagulant properties of the modified membrane by measuring the activated partial thromboplastin time (APTT) and prothrombin time (PT). The second aim of the study is to evaluate the antifouling properties of the modified PES membranes by examining its antimicrobial activity against two Gram‐negative bacteria, which are Pseudomonas aeruginosa (P. aeruginosa) and Escherichia coli (E. coli); two Gram‐positive bacteria, which are Bacillus subtilis (B. subtilis) and Staphylococcus aureus (S. aureus); and a fungus, which is Candida albicans (C. albicans). The results showed that grafting of ABS and AMBS improved overall the hydrophilicity properties of the modified PES membranes. PES‐b‐PES‐ABS membranes showed better anticoagulant properties with 13 seconds for PT and 38 seconds for APPT, in comparison with the control sample (pure plasma), which showed 12 seconds for PT and 30 seconds for APPT. For antimicrobial tests, both PES‐b‐PES‐ABS and PES‐b‐PES‐AMBS membranes did not show any antibacterial activity, but when zinc oxide (ZnO) nanoparticles were added to the modified PES membranes in concentrations between 3% to 5% w/w, PES‐b‐PES‐ABS‐ZnO (M‐4 and M‐5), and PES‐b‐PES‐AMBS‐ZnO (M‐8 and M‐9) nanocomposite membranes showed antibacterial activity against P. aeruginosa and S. aureus.

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Section: Resultssupporting

confidence: 93%

Enhanced antifouling and anticoagulant properties of grafted biomolecule polyethersulfone membranes

Alenazi

Alamry

Hussein

et al. 2019

Polymers for Advanced Techs

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“…Due to variable conditions such as fouling, chemical exposure, disintegration, cleaning etc. membrane performance decrease with the passage of time so characterization in this case using specific techniques gives valuable information about membrane structure and its topography in order to get insight about performance loss or affected membrane structure [206][207][208][209][210][211]. Similarly, modified membranes (modification with nano-materials) are also characterized in order to get information about modified surface layer for membrane performance.…”

Section: Characterization Techniquesmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

188

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During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

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“…The porosity (ɛ) of the membranes was measured using following eq.

normalP normalo normalr normalo normals normali normalt normaly true(% true) = \frac{W_{w} - W_{d}}{d \times A \times δ}

where W w and W d are defined as membrane wet and dry weight, respectively; d is the membrane thickness (m), A is the membrane effective area (m 2 ), and δ is the water density (1 g/cm³).…”

Section: Methodsmentioning

confidence: 99%

“…The Guerout–Elford–Ferry equation was used to measure mean pore radius ( r m ) of the membranes [eq. ]

r_{m} = \sqrt{\frac{(2.9 - 1.75 ɛ) \times 8 η δ Q}{ɛ \times A \times Δ P}}

where Q is pure water flux (PWF) (m 3 /s), η is water viscosity (8.9 × 10 −4 Pa s), and Δ P is the filtration pressure (0.3 MPa).…”

Section: Methodsmentioning

confidence: 99%

Synthesis of a novel sulfonated poly(amide‐imide) and its application in preparation of ultrafiltration PES membranes as a modifier

Rezania

Vatanpour

Hayatipour

et al. 2018

J of Applied Polymer Sci

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Sulfonated poly(amide‐imide) (SPAI) copolymer was synthesized, characterized, and blended into poly(ether sulfone) (PES)/dimethylacetamide casting solutions to prepare ultrafiltration membranes. Different weight ratios of the copolymer (0–10 wt %) were mixed in the PES casting solution. The analyses of contact angle and attenuated total reflection‐Fourier transform infrared spectra were used to study hydrophilicity and physicochemical properties of the membrane surface, respectively. The membranes were further characterized by scanning electron microscopy images, ultrafiltration performance, and fouling analyses. The outcomes showed that addition of the SPAI in the PES matrix improved considerably the membranes hydrophilicity. Moreover, with increasing SPAI concentration, the porosity, flux recovery ratio, and pure water permeability of the modified membranes were improved. The pure water flux was increased from 3.6 to 12.4 kg/m2 h by increasing 2 wt % SPAI. The antifouling property of the modified PES membranes against bovine serum albumin, tested by a dead‐end filtration setup revealed that bovine serum albumin rejection of the obtained membrane was also enhanced and the antifouling properties of the blending membranes were improved. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46477.

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Improvement in flux and antifouling properties of PVC ultrafiltration membranes by incorporation of zinc oxide (ZnO) nanoparticles

Cited by 231 publications

References 58 publications

Enhanced antifouling and anticoagulant properties of grafted biomolecule polyethersulfone membranes

Enhanced antifouling and anticoagulant properties of grafted biomolecule polyethersulfone membranes

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Synthesis of a novel sulfonated poly(amide‐imide) and its application in preparation of ultrafiltration PES membranes as a modifier

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