Sustainable Fabrication of Organic Solvent Nanofiltration Membranes

Thi, Hai Yen Nguyen; Nguyen, Bao Tran Duy; Kim, Jeong F.

doi:10.3390/membranes11010019

Cited by 33 publications

(14 citation statements)

References 55 publications

(124 reference statements)

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“…Phase inversion-generated nanocomposite membranes have been used for nanofiltration, microfiltration, or ultrafiltration processes. The choice of solvent used in the phase inversion technique may cause a better dispersion of the graphene and GO nanoparticles in the polymer matrices [110,111].…”

Section: Polymer/graphene Nanocomposite Membranes For Water Permeationmentioning

confidence: 99%

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Kausar

Bocchetta

2022

J. Compos. Sci.

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Graphene is a unique nanocarbon nanomaterial, frequently explored with polymeric matrices for technical purposes. An indispensable application of polymer/graphene nanocomposites has been observed for membrane technology. This review highlights the design, properties, and promising features of the polymer/graphene nanomaterials and nanocomposite membranes for the pervasion and purification of toxins, pollutants, microbials, and other desired contents. The morphology, pore size, pore structure, water flux, permeation, salt rejection, and other membrane properties are examined. Graphene oxide, an important modified form of graphene, is also utilized in nanocomposite membranes. Moreover, polymer/graphene nanofibers are employed to develop high-performance membranes for methodological purposes. The adaptability of polymer/graphene nanocomposites is observed for water management and purification technologies.

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Section: Polymer/graphene Nanocomposite Membranes For Water Permeationmentioning

confidence: 99%

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Kausar

Bocchetta

2022

J. Compos. Sci.

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“…where is the effective pore radius (membrane) and is the Stokes radius of ion i. Finally, by substituting Equations ( 9), ( 13)-( 16) into Equations ( 3) and ( 7), we obtained the following equations (Equation (18) and Equation ( 19)):…”

Section: Model Equationsmentioning

confidence: 99%

“…Thus, W. Shao et al recently synthesized an NFM using polyethyleneimine as the aqueous reactive monomers, and a positively charged thin-film nanocomposite NFM with enhanced performance was developed by successfully incorporating graphene oxide (GO) into the substrate active layer [17]. Other remarkable works are also reported, including that performed on organic solvent NFMs and remineralization of desalinated water [11,18,19].…”

Section: Introductionmentioning

confidence: 99%

Euler’s Numerical Method for Ions Rejection Reassessment of a Defect-Free Synthesized Nanofiltration Membrane with Ultrathin Titania Film as the Selective Layer

et al. 2021

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Titanium (Ti) nanoparticles (NPs) were successfully seeded on the platform of a polyacrylonitrile (PAN) ultrafiltration (UF) membrane previously coated with bio-glue (a co-deposition of dopamine hydrochloric bicarbonate buffer having undergone pyrocatechol deprotonation). The tools in vogue, especially field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), and atomic force microscopy (AFM), have made it possible to fully characterize the structure of the new organic-inorganic nanofiltration (NF) membrane, namely NF_PAN_Ti. A soft computing model has been applied to make commonplace the complex and implicit extended Nernst–Planck equations that govern the transport of ions through NF membranes. Euler’s numerical method was applied with a small step-size and the results obtained were very interesting. The filtration velocity approach of GUEROUT-ELFORD-FERRY helped to estimate the average pore size of NF_PAN_Ti to rp = 0.538 nm. A six-day test carried out on NF_PAN_Ti demonstrated its long-term stability and showed a steady-rejection rate of 89.3% of MgCl2 salt and permeate flux of 56 L·m−2·h−1. The Euler’ numerical method corroborated perfectly the experimental findings since the relative error was found to be very low at 0.33% for Cl−and 0.09% for Mg2+ (RE << 0.1). These practical prediction tools may henceforth help in the choice and calibration of next-generation NF membranes’ synthesis.

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“…Moreover, one-step membrane surface modifications by Fu et al (2021) was found to improve the permeation of nonpolar solvent while maintaining high rejections of solutes. Therefore, the encouraging performance and process development of OSN membranes have provided researchers with confidence to explore OSN implementation in various industries (Marchetti et al, 2014;Nguyen Thi et al, 2021;Szekely et al, 2014). As of current, OSN has found numerous uses for molecular-scale separation including the recovery of homogeneous catalyst (Peddie et al, 2017), solvent recovery (Rundquist et al, 2012), chiral separation (Ghazali et al, 2006), concentration of natural extracts (Peev et al, 2011;Peshev et al, 2011), purification of pharmaceuticals (Székely et al, 2011) and peptide synthesis (So et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Enrichment of carotene from palm oil by organic solvent nanofiltration

Ghazali

Hanim

Pahlawi

et al. 2021

J Americ Oil Chem Soc

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Palm oil is one of the richest sources of natural plant carotene with typical concentration of about 0.5-0.7 g/L. Unfortunately, during physical refining of palm oil, most of the carotenes were destroyed by high temperatures and this represents a loss of potential source of natural carotene. Various techniques have been developed to extract and recover carotenes from palm oil, however these processes often require high energy usage, and usually renders the oil useless for further consumption. Recently, organic solvent nanofiltration (OSN) has become an important method for molecular separation particularly for the separation of low molecular weight bioactive compounds. This work presents the application of OSN membranes for the separation of carotene from a crude palm oil/solvent system. Several commercial OSN membranes (DuraMem and PuraMem series) fabricated from polyimide were evaluated for their separation abilities. PuraMem 280 showed the best selectivity performance, with the concentration of carotene in permeate oil increased from 0.60 to 0.79 g/L when hexane was used as the solvent. Runs by using DuraMem 150, DuraMem 300 and DuraMem 500 showed low or no selectivity between carotene and triglyceride in all solvents. It was found that the rejection of carotene depends strongly on the type of solvents. A coupled solution diffusion and film theory was also utilized to model carotene transport through OSN membrane. It was demonstrated that OSN can serve as an alternative for the direct carotene recovery from palm oil and can be potentially applied for other minor compounds recovery from vegetable oils.

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Sustainable Fabrication of Organic Solvent Nanofiltration Membranes

Cited by 33 publications

References 55 publications

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Euler’s Numerical Method for Ions Rejection Reassessment of a Defect-Free Synthesized Nanofiltration Membrane with Ultrathin Titania Film as the Selective Layer

Enrichment of carotene from palm oil by organic solvent nanofiltration

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