Fabrication of polyamide thin-film nano-composite (PA-TFN) membrane with hydrophilized ordered mesoporous carbon (H-OMC) for water purifications

Kim, Eun-Sik; Deng, Baolin

doi:10.1016/j.memsci.2011.01.041

Cited by 140 publications

(39 citation statements)

References 36 publications

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“…The possible reason was that some defects or cracks may exist due to strong filler interactions and agglomerations. Similar results were also observed with a composite membrane containing silica nanoparticles and ordered mesoporous carbon (OMC), less water uptake and permeable flux were detected with higher loading of nanoparticles in the thin-film layer, and the overdose of nanofillers can also lead to the loss of membrane selectivity [51][52][53].…”

Section: Pervaporation Performance Using Single Salt Brinesupporting

confidence: 67%

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

Lei

Hou

et al. 2017

Applied Sciences

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Featured Application: The pervaporation membranes fabricated in this study can be potentially used for brine treatment.Abstract: Pervaporation membranes have gained renewed interest in challenging feedwaters desalination, such as reverse osmosis (RO) concentrated brine wastewater. In this study, composite polyvinyl alcohol (PVA)/polyvinylidene fluoride (PVDF) pervaporation membranes were prepared for brine treatment. The composite membrane was firstly studied by adjusting the cross-linking density of PVA by glutaraldehyde: the membrane with higher cross-linking density exhibited much higher salt rejection efficiency for long-term operation. A trace of salt on the permeate side was found to diffuse through the membrane in the form of hydrated ions, following solution-diffusion mechanism. To further suppress the salt transport and achieve long-term stable operation, graphene oxide (GO) was incorporated into the PVA layer: the addition of GO had minor effects on water permeation but significantly suppressed the salt passage, compared to the pure PVA/PVDF membranes. In terms of brine wastewater containing organic/inorganic foulant, improved anti-fouling performance was also observed with GO-containing membranes. Furthermore, the highest flux of 28 L/m 2 h was obtained for the membrane with 0.1 wt. % of GO using 100 g/L NaCl as the feed at 65 • C by optimising the pervaporation rig, with permeate conductivity below 1.2 µS/cm over 24 h (equivalent to a salt rejection of >99.99%).

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Section: Pervaporation Performance Using Single Salt Brinesupporting

confidence: 67%

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

Lei

Hou

et al. 2017

Applied Sciences

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“…Instead of differences in particles' size, controllable design in interfacial chemistry of membrane is also possible using other type of molecular sieves, owing to their tunable functionality with respect to hydrophilicity, charge density and antimicrobial capability. It was recently reported by Kim and Deng [51] that hydrophilized ordered mesoporous carbons (H-OMCs) modified from pristine OMCs were possible to be used as nano-filler in making thin-film polymer matrix of improved properties. According to them, the plasma treated H-OCMs could be well dispersed in the aqueous solution which were likely to minimize large aggregate particles which appeared on the substrate surface during IP process, leading to high quality of thin film layer formed and considerably improved membrane performances with respect to water permeability and bovine serum albumin adsorption.…”

Section: Additivementioning

confidence: 99%

A recent progress in thin film composite membrane: A review

et al. 2012

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“…The substrate prepared via phase inversion method possessed molecular weight cut-off (MWCO) of 47.5 kDa (see Figure S1) with pure water flux and surface contact angle recorded at ~150 L/m 2 .h.bar and 78.2 o , respectively. The MWCO of the substrate prepared was in the range of 30-50 kDa as reported in literature [15][16]. The synthesis of PA layer was performed via interfacial polymerization technique that used PIP and TMC as monomers.…”

Section: Preparation Of Tfc and Tfn Membranesmentioning

confidence: 99%

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

et al. 2016

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Thin film nanocomposite (TFN) membranes containing 0.05 or 0.10 w/v% functionalized titanate nanotubes (TNTs) in polyamide selective layer were prepared via interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC) monomers. Nanomaterials were dispersed into the monomer solution using two different approaches. In the first one, the functionalized TNTs were dispersed into the amine aqueous solution, while in the second approach the same nanomaterials were dispersed in TMC organic solution. The TFN membranes were characterized and compared with a control thin film composite (TFC) membrane to investigate the effect of nanofiller loadings and the fabrication approach on membrane properties. Results showed that introducing nanofillers into the organic phase was more effective to synthesize a TFN membrane of greater separation performance as the use of rubber roller to remove aqueous solution from the substrate surface could cause the loss of a significant amount of nanofillers, which further affected the polyamide layer integrity. It was also found that incorporation of high nanofiller loading tended to interfere with interfacial polymerization and weaken the bonds between monomers blocks, resulting in poor polyamide-nanotubes integrity. Compared to the TFC membrane, the TFN membrane made of 2% PIP and 0.15% TMC with 0.5% nanofiller incorporation could achieve greater water flux (7.5 vs 5.4 L/m 2 .h.bar) and Na2SO4 rejection (96.4% vs 86%) while exhibiting higher resistance against the fouling by protein and dye.

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Fabrication of polyamide thin-film nano-composite (PA-TFN) membrane with hydrophilized ordered mesoporous carbon (H-OMC) for water purifications

Cited by 140 publications

References 36 publications

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

A recent progress in thin film composite membrane: A review

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

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