High flux polyamide thin film composite forward osmosis membranes prepared from porous substrates made of polysulfone and polyethersulfone blends

Yu-rong, Sun; Xue, Lixin; Zhang, Yaojian; Zhao, Xue; Huang, Yan; Du, Xudong

doi:10.1016/j.desal.2013.12.036

Cited by 41 publications

(22 citation statements)

References 28 publications

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“…Their study showed that a ratio of 2:3 in the blend introduced a large open bottom section in the support layer and increased surface roughness which minimized ICP. However, the support layer enhanced water flux but came at the cost of also increasing solute reverse flux [162].…”

Section: Assessment Of Membrane Performancementioning

confidence: 99%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

405

203

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Section: Assessment Of Membrane Performancementioning

confidence: 99%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

405

203

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“…For this purpose, Pebax polymer was coated on the PES‐PSf blend membrane as support layer. Indeed, PES‐PSf blend membrane depicts smaller surface pores, higher porosity, and flux when compared with porous PSf membrane . Surface modification was performed using hydrophilic TiO 2 nanoparticles to improve hydrophilicity and antifouling properties of the prepared membrane.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of TiO₂/Pebax/(PSf‐PES) thin film nanocomposite membrane for humic acid removal from water

Cheshomi

Pakizeh

Namvar–Mahboub

2018

Polymers for Advanced Techs

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New thin film composite (TFC) membrane was prepared via coating of Pebax on PSf‐PES blend membrane as support, and its application in wastewater treatment was investigated. To modify this membrane, hydrophilic TiO2 nanoparticles were coated on its surface at different loadings via dip coating technique. The as‐prepared membrane was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), field emission SEM, and contact angle analysis. The Fourier transform infrared spectroscopy analysis and surface SEM images indicated that TiO2 was successfully coated on the membrane surface. In addition, the results stated that the hydrophilicity and roughness of membrane surface increased by addition of TiO2 nanoparticles. Performance of TFC and modified TFC membranes was evaluated through humic acid removal from aqueous solution. Maximum permeate flux and humic acid rejection were obtained at 0.03 and 0.01 wt% TiO2 loadings, respectively. Rejection was enhanced from 96.38% to 98.92% by the increase of feed concentration from 10 to 30 ppm. Additionally, membrane antifouling parameters at different pressures and feed concentration were determined. The results indicated that surface modification of membranes could be an effective method for improvement of membrane antifouling property.

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“…And the reverse solute flux was calculated by the change of NaCl concentration in the feed solution. The reverse solute flux J s (mol/ m 2 h) is determined from the increase of the feed conductivity [26]:…”

Section: Testing Of Membrane Filtration Performance In Forward Osmosimentioning

confidence: 99%

“…The filtration performance of the membrane was measured by a cross flow filtration system [26][27][28] with an effective membrane area of 64.26 cm 2 . The volume of both feed and draw solutions was 4.0 L at the start of each experimental run, a 2.0 M NaCl solution was used as draw solution and the de-ionized water was used as feed solution.…”

Section: Testing Of Membrane Filtration Performance In Forward Osmosimentioning

confidence: 99%

“…A balance (SE6001F, USA) connected to the computer recorded down the mass of water permeating into draw solution while a conductivity meter was used to record down the concentration of NaCl in feed solution. The water flux (Jw, L/m 2 h) was calculated from the weight changes draw solution [26].…”

Section: Testing Of Membrane Filtration Performance In Forward Osmosimentioning

confidence: 99%

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Influence of Functionalized Multiwall Carbon Nano-Tube on the Structure and Performance of Cellulose Di-Acetate Based Forward Osmotic Membrane for Desalination Process

Zhao¹,

Sheng²

2015

J Membra Sci Technol

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rejections of the membranes were both improved at the same time [22,24]. Shawky's results suggested that the addition of MWCNTs improved the rejection of both salt and organic matter for PA base FO membrane [25]. Zhang et al. introduced MWCNTs functionalized with isocyanate and 5-isocyanato-isophthaloyl chloride into PSF ultrafiltration membranes, and found that MWCNTs influenced surface mean pore size and porosity of membrane. As a result, with an appropriate amount of modified MWCNTs, the water flux of the membrane was enhanced [20].In this paper, to investigate the effect of MWCNTs on the structure and properties of FO membranes, MWCNTs were incorporated into the CDA matrix during the phase inversion process. The concentration of nano-tubes in the polymer matrix was controlled from 0 to 5wt% AbstractTo improve the performance of Cellulose di-acetate (CDA) based forward osmotic (FO) membrane in sea water desalination process, functionalized multi-walled carbon nano-tubes (MWCNTs) were blended as additives at varied compositions, from 0 to 5 wt%, into the solutions to prepare FO membranes using a classical phase-inversion method. The structure and property of the formed membranes were characterized by Fourier transfer infrared (FT-IR) spectroscopy, Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), Transitional Electron Microscopy (TEM), Water Flux and Reverse Solute Flux Tests. It was found that the content of functionalized MWCNTs was an important factor influencing the morphology, porous structures and properties of the blend membranes. SEM, AFM and TEM images of the blend membranes showed that the surface morphology and the cross-sectional morphology changed with the content of functionalized MWCNTs. It is interesting to see that at the presence of functionalized MWCNTs, the surface contact angle and the reverse solute flux of the FO membranes could be greatly improved without significantly affecting the pure water flux. With the addition of only about 1 wt% MWCNTs, the water flux of CDA based FO membrane was increased from 10.5 to 12.5 L/m 2 h while its reverse solute flux was reduced from 1.8 to below 0.3 mol/m 2 h. Desalination tests with 3.5 wt% simulated seawater feed solution had shown that the blend membrane with 1 wt% MWCNTs, was 366% higher in water flux and 53% lower in reverse solute flux than those of pure CDA FO membrane. These results suggest that CDA bases FO membranes modified with functionalized MWCNTs could possess good potential to be further developed for practical applications in the sea water desalination processes.

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High flux polyamide thin film composite forward osmosis membranes prepared from porous substrates made of polysulfone and polyethersulfone blends

Cited by 41 publications

References 28 publications

Recent advancements in forward osmosis desalination: A review

Recent advancements in forward osmosis desalination: A review

Preparation and characterization of TiO₂/Pebax/(PSf‐PES) thin film nanocomposite membrane for humic acid removal from water

Influence of Functionalized Multiwall Carbon Nano-Tube on the Structure and Performance of Cellulose Di-Acetate Based Forward Osmotic Membrane for Desalination Process

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High flux polyamide thin film composite forward osmosis membranes prepared from porous substrates made of polysulfone and polyethersulfone blends

Cited by 41 publications

References 28 publications

Recent advancements in forward osmosis desalination: A review

Recent advancements in forward osmosis desalination: A review

Preparation and characterization of TiO2/Pebax/(PSf‐PES) thin film nanocomposite membrane for humic acid removal from water

Influence of Functionalized Multiwall Carbon Nano-Tube on the Structure and Performance of Cellulose Di-Acetate Based Forward Osmotic Membrane for Desalination Process

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Preparation and characterization of TiO₂/Pebax/(PSf‐PES) thin film nanocomposite membrane for humic acid removal from water