Novel thin film composite membranes supported by cellulose triacetate porous substrates for high-performance forward osmosis

Wu, Qingyun; Xing, Xiaoyan; Yu, Yuan; Gu, Lin; Xu, Zhi‐Kang

doi:10.1016/j.polymer.2018.08.017

Cited by 33 publications

(22 citation statements)

References 32 publications

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“…This is likely due to the bigger surface pore sizes as well as higher surface porosity of PC substrate. 21 The substrates examined here showing different chemical properties, different top surface pore size and surface porosity can effectively affect the interfacial polymerization step as well as the properties of the resultant PA active layer . 45 The results indicate that a rough PA film may form when porous substrate possesses large surface pores.…”

Section: Characterization Of Tfc Membranesmentioning

confidence: 98%

“…The ideal substrate for a TFC FO membrane should have a hydrophilic substrate preferably thin, with highly porous surface and bulk exhibiting low structural parameter 14,15 . For fabricating an ideal substrate for TFC FO membrane, different polymers and different methods have been already employed 16–22 . Polyacrylonitrile (PAN) 17,23,24 , Polyethersulfone (PES) 4,25 and Polysulfone (PSF) 20,26 are the most polymers that used for forward osmosis process.…”

Section: Introductionmentioning

confidence: 99%

“…14,15 For fabricating an ideal substrate for TFC FO membrane, different polymers and different methods have been already employed. [16][17][18][19][20][21][22] Polyacrylonitrile (PAN) 17,23,24 , Polyethersulfone (PES) 4,25 and Polysulfone (PSF) 20,26 are the most polymers that used for forward osmosis process.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of using polycarbonate as a substrate of thin film composite membrane in forward osmosis

Alihemati

Hashemifard

Matsuura

et al. 2021

J of Applied Polymer Sci

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In the present study, thin film composite (TFC) forward osmosis (FO) membranes with polycarbonate (PC (and polyether sulfone (PES) as substrates were fabricated to investigate the impact of the structural parameters of substrate on the performance of the membranes. Firstly, the substrates were prepared by Loeb‐Sourirajan method. Characterization techniques including FESEM, contact angle measurement, pure water flux, gas permeability test, and tensile test were applied to investigate the properties of the substrates. After preparing suitable substrates, active layers were fabricated via interfacial polymerization (IP) technique. The performance and characterization test showed that PC is a relatively hydrophilic polymer with a good property for using as a substrate of FO TFC membrane but as the result of gas permeability test show, this membrane has large surface pore size in comparison with PES membrane. Mean pore size of PC and PES membrane is 378 and 139 nm, respectively. Also, the results show that the effective surface porosity of PC (285, 1/m) is more than PES (213, 1/m) substrate.

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Section: Characterization Of Tfc Membranesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility of using polycarbonate as a substrate of thin film composite membrane in forward osmosis

Alihemati

Hashemifard

Matsuura

et al. 2021

J of Applied Polymer Sci

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“…The membranes based on natural biopolymers such as chitosan, cellulose, and its derivate were used in many applications (microfiltration, ultrafiltration, reverse osmosis, and nanofiltration membrane processes) due to the their advantages, such as low cost, availability, biodegradability, natural sources, being environmentally friendly, high flux and high rejection, good adsorption of liquids [ 12 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. Chitosan (CS), due to its advantages such as nontoxicity, being cheap, biocompatibility, and biodegradability [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ] has been widely reported as an effective sorbent of heavy metals (e.g., Fe 2+ , Cu 2+ , Pb 2+ , Cr 3+ , Ni 2+ , Cd 2+ , Zn 2+ , Co 2+ , Mn 2+ , and Pd 2+ ) from aqueous systems.…”

Section: Introductionmentioning

confidence: 99%

Biopolymeric Membrane Enriched with Chitosan and Silver for Metallic Ions Removal

et al. 2020

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The present paper synthesized, characterized, and evaluated the performance of the novel biopolymeric membrane enriched with cellulose acetate and chitosan (CHI)-silver (Ag) ions in order to remove iron ion from the synthetic wastewater using a new electrodialysis system. The prepared membranes were characterized by Fourier Transforms Infrared Spectroscopy-Attenuated Total Reflection (FTIR-ATR), Thermal Gravimetric Analysis (TGA) and Differential Thermal Analysis (DSC), contact angle measurements, microscopy studies, and electrochemical impedance spectroscopy (EIS). The electrodialysis experiments were performed at the different applied voltages (5, 10, and 15 V) for one hour, at room temperature. The treatment rate (TE) of iron ions, current efficiency (IE), and energy consumption (Wc) were calculated. FTIR-ATR spectra evidenced that incorporation of CHI-Ag ions into the polymer mixture led to a polymer-metal ion complex formation within the membrane. The TGA-DSC analysis for the obtained biopolymeric membranes showed excellent thermal stability (>350 °C). The contact angle measurements demonstrated the hydrophobic character of the polymeric membrane and a decrease of it by CHI-Ag adding. The EIS results indicated that the silver ions induced a higher ionic electrical conductivity. The highest value of the iron ions treatment rate (>60%) was obtained for the biopolymeric membrane with CHI-Ag ions at applied voltage of 15 V.

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“…It is of great demand to develop alternative water sources, such as seawater desalination and wastewater reclamation [2]. Recently, forward osmosis (FO) has drawn much attention as an emerging membrane separation technology for available desalination, because of its zero external pressure, low energy input, acceptable fouling resistance and high water recovery [3,4,5,6,7,8]. In a typical FO process, FO membranes play an important role on transporting water molecules and selectively rejecting the salt solute.…”

Section: Introductionmentioning

confidence: 99%

Aluminosilicate Nanotubes Embedded Polyamide Thin Film Nanocomposite Forward Osmosis Membranes with Simultaneous Enhancement of Water Permeability and Selectivity

et al. 2019

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Nanocomposite membranes are strongly desired to break a trade-off between permeability and selectivity. This work reports new thin film nanocomposite (TFN) forward osmosis (FO) membranes by embedding aluminosilicate nanotubes (ANTs) into a polyamide (PA) rejection layer. The surface morphology and structure of the TFN FO membranes were carefully characterized by FTIR, XPS, FESEM and AFM. The ANTs incorporated PA rejection layers exhibited many open and broad “leaf-like” folds with “ridge-and-valley” structures, high surface roughness and relatively low cross-linking degree. Compared with thin film composite (TFC) membrane without ANTs, the TFN membrane with only 0.2 w/v% ANTs loading presented significantly improved FO water permeability, selectivity and reduced structural parameters. This promising performance can be mainly contributed to the special ANTs embedded PA rejection layer, where water molecules preferentially transport through the nanochannels of ANTs. Molecular dynamic simulation further proved that water molecules have much larger flux through the nanotubes of ANTs than sodium and chloride ions, which are attributed to the intrinsic hydrophilicity of ANTs and low external force for water transport. This work shows that these TFN FO membranes with ANTs decorated PA layer are promising in desalination applications due to their simultaneously enhanced permeability and selectivity.

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Novel thin film composite membranes supported by cellulose triacetate porous substrates for high-performance forward osmosis

Cited by 33 publications

References 32 publications

Feasibility of using polycarbonate as a substrate of thin film composite membrane in forward osmosis

Feasibility of using polycarbonate as a substrate of thin film composite membrane in forward osmosis

Biopolymeric Membrane Enriched with Chitosan and Silver for Metallic Ions Removal

Aluminosilicate Nanotubes Embedded Polyamide Thin Film Nanocomposite Forward Osmosis Membranes with Simultaneous Enhancement of Water Permeability and Selectivity

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