Facile fabrication of superior nanofiltration membranes from interfacially polymerized CNT-polymer composites

Roy, Sagar; Ntim, Susana Addo; Mitra, Somenath; Sirkar, Kamalesh K.

doi:10.1016/j.memsci.2011.03.012

Cited by 163 publications

(65 citation statements)

References 17 publications

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“…The flux (J) is measured as amount of permeant (ΔV) per unit area of membrane surface (A) and time (Δt). The flux is calculated as follows [18,19]:…”

Section: Membrane Flux (J)mentioning

confidence: 99%

Physico-chemical characterization, morphology and performance of polyethersulfone based membrane for glycerol removal from biodiesel produced through trans-esterification of waste cooking oils

Farahani

Halek

Hosseini

2015

Korean J. Chem. Eng.

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In the current research, the biodiesel purification was by use of poly ether sulfone based membrane. The biodiesel was produced from waste cooking oils by trans-esterification. Membranes were fabricated by solution casting through phase inversion method. The effect of PES concentration in the casting solution on physico-chemical characteristics, morphology and performance of membranes in glycerol removal from produced biodiesel was studied. SEM and AFM analysis have been utilized for the membrane morphological characterization. SEM images showed uniform surface for the membranes. AFM analysis revealed that the membrane surface roughness was decreased by increase of polymer concentration. The membrane flux, water content and porosity were also decreased by increase of PES concentration. Moreover, obtained results showed that membrane glycerol rejection and mechanical strength were improved by increase of polymer binder concentration. The prepared membrane with 16%wt PES showed more appropriate performance compared to others.

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“…The flux (J) is measured as amount of permeant (ΔV) per unit area of membrane surface (A) and time (Δt). The flux is calculated as follows [18,19]:…”

Section: Membrane Flux (J)mentioning

confidence: 99%

Physico-chemical characterization, morphology and performance of polyethersulfone based membrane for glycerol removal from biodiesel produced through trans-esterification of waste cooking oils

Farahani

Halek

Hosseini

2015

Korean J. Chem. Eng.

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“…For PA with the well cross-linked structure, the affinity between PA and the used solvents and the stability of the support should be further improved. [28][29][30][31] For PEs as usually water-soluble polymers, introducing crosslinkable chemical groups or enhancing the intertwined and electrostatic attraction among PEs is feasible ways.…”

Section: The Polymeric Materials For Srnf Membranesmentioning

confidence: 99%

“…CNTs/PA/PES composite SRNF membranes showed outstanding stability against methanol and a 91% rejection of brilliant blue R. However, the reason underlying this enhanced solvent permeability is not clear and requires further investigation. 29 Solomon et al 30,31 have also published interesting works on the fabrication of SRNF membranes by IP. They found that the nonpolar solvent flux of composites membranes polymerized from m-phenylenediamine (MPD) and trimesoyl chloride (TMC) increased after treatment with an active solvent (DMF or DMSO).…”

Section: Pa For Srnf Membranesmentioning

confidence: 99%

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

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When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation, which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by SRNF processes are proposed. C

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“…Many kinds of nanomaterials (nanoparticles, nanotubes, nanofibers and nanosheets) have been introduced into the active layer in membrane preparation [34][35][36]. As 2D materials with high specific surface areas, multi-walled carbon nanotubes (MWCNTs) have shown to be capable of improving water permeability of NF membranes [37][38][39]. Shen et al [23] prepared thin-film nanocomposite membranes by incorporating poly (methyl methacrylate) (PMMA) grafted MWNTs into the active layers; at the optimum conditions, the water flux enhanced about 62%.…”

Section: Introductionmentioning

confidence: 99%

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

Zhao

et al. 2015

Journal of Membrane Science

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Facile fabrication of superior nanofiltration membranes from interfacially polymerized CNT-polymer composites

Cited by 163 publications

References 17 publications

Physico-chemical characterization, morphology and performance of polyethersulfone based membrane for glycerol removal from biodiesel produced through trans-esterification of waste cooking oils

Physico-chemical characterization, morphology and performance of polyethersulfone based membrane for glycerol removal from biodiesel produced through trans-esterification of waste cooking oils

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

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