Characterization and performance of nanofiltration membranes

Agboola, Oluranti; Maree, J. P.; Mbaya, Richard

doi:10.1007/s10311-014-0457-3

Cited by 54 publications

(25 citation statements)

References 99 publications

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“…Unlike MF and UF membranes, which relies solely on sizerejection for separation, the separation of electrolytes by NF membranes is achieved by the combination of at least three mechanisms, i.e., size-exclusion, Donnan potential and dielectric exclusions [114]. As a result, NF membranes are capable of rejecting ions much smaller than its pore size.…”

Section: Membranes In Nanofiltrationmentioning

confidence: 99%

Effects of Inorganic Nano-Additives on Properties and Performance of Polymeric Membranes in Water Treatment

Baghbanzadeh

Rana

Lan

et al. 2015

Separation & Purification Reviews

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Separation using selective polymeric membranes has been well-established as an energy-efficient and cost-effective technology in water treatment and many other applications involving aqueous solutions. However, limited chemical, thermal, and mechanical resistances besides their tendency to fouling and inadequate pure water flux may often restrict their applications. To this end, inorganic materials as additives have been demonstrated to be able to enhance chemical, thermal, and fouling membrane resistances, which demonstrate their great potential for developing novel membranes by using them as additives in polymer matrices. Considering the excellent characteristics of the nano-sized particles, this study reviews the effects of inorganic nanoadditives on properties and performance of polymer/nanoparticle composite membranes. It has been demonstrated that using nanomaterials in a polymer matrix could enhance the mechanical strength and stiffness, wettability, selectivity, water permeability, and antifouling characteristics of the host polymer. Abbreviation ALDAtomic Layer Deposition PAN Polyacrylonitrile AOP Advanced Oxidation Process PAS Polyarylsulfone APTS 3-Aminopropyltriethoxysilane PCTE Polycarbonate BET Brunauer Emmett Teller PDMS Polydimethylsiloxane BP Bucky-Paper PEI Polyethyleneimine BPPO Brominated Poly(phenylene oxide) PES Polyethersulfone BSA Bovine serum albumin PI Polyimide CA Cellulose acetate PMMA Poly(methyl methacrylate) Downloaded by [Deakin University Library] at 01:21 12 August 2015 A c c e p t e d M a n u s c r i p t CNIM Carbon Nanotube Immobilized Membrane PP Polypropylene CNT Carbon Nanotube PSf Polysulfone CTA Cellulose triacetate PTFE Polytetrafluoroethylene DCMD Direct Contact Membrane Distillation PV Pervaporation DLS Dynamic Light Scattering PVA Poly(vinyl alcohol) FO Forward Osmosis PVC Polyvinyl chloride GO Graphene Oxide PVDF Polyvinylidene fluoride ICP Internal Concentration Polarization RO Reverse Osmosis LEP Liquid Entry Pressure SDS Sodium dodecyl sulfate MD Membrane Distillation SEM Scanning Electron Microscopy Downloaded by [Deakin University Library] at 01:21 12 August 2015 A c c e p t e d M a n u s c r i p t MF Microfiltration SGMD Sweep Gas Membrane Distillation MWCNT Multi-Walled Carbon Nanotube SPES SulfonatedPolyethersulfone NF Nanofiltration TMOS Tetramethylorthosilicate NP Nanoparticle TMP Transmembrane Pressure PA Polyamide UF Ultrafiltration PAI Poly(amide-imide) VMD Vacuum Membrane Distillation 1-IntroductionThe increase in water demand for domestic, agricultural and industrial uses resulted in much attention toward water and waste water treatment technologies during the last few decades. The water demand is predicted to increase by 50% over the next few decades [1]. Membrane filtration, advanced oxidation processes (AOPs), and UV irradiation are among the processes that Downloaded by [Deakin University Library] at 01:21 12 August 2015A c c e p t e d M a n u s c r i p t have been used for this purpose [2] and membrane filtration is considered to be one of the most...

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Section: Membranes In Nanofiltrationmentioning

confidence: 99%

Effects of Inorganic Nano-Additives on Properties and Performance of Polymeric Membranes in Water Treatment

Baghbanzadeh

Rana

Lan

et al. 2015

Separation & Purification Reviews

View full text Add to dashboard Cite

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“…The pore size of the top surface of the membranes was measured by SEM image analysis using ImageJ software [32][33][34][35][36]. The surface pores were assumed to be perfectly circular.…”

Section: Pore Sizementioning

confidence: 99%

“…The software has been already successfully used by other researchers [29, 32,35]. The program used in this work is called SurfCharJ [37] and the input to the software is a 32 bit SEM image.…”

Section: Roughnessmentioning

confidence: 99%

Effects of hydrophilic CuO nanoparticles on properties and performance of PVDF VMD membranes

et al. 2015

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“…The pore size/nanosheet spacing is adjustable, by tuning the properties of the GO nanosheets including by inclusion of filler molecules such as TiO 2 or other nanoparticles [5,10,11,12]. Transport of molecules larger than the void spacing of the stacked GO sheets is blocked, whereas permeation of water is extremely fast (Figure 3) [5,13]. …”

Section: Strategies For Membrane Fabricationmentioning

confidence: 99%

Incorporation of Graphene-Related Carbon Nanosheets in Membrane Fabrication for Water Treatment: A Review

Lawler

2016

Membranes

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The minimization of the trade-off between the flux and the selectivity of membranes is a key area that researchers are continually working to optimise, particularly in the area of fabrication of novel membranes. Flux versus selectivity issues apply in many industrial applications of membranes, for example the unwanted diffusion of methanol in fuel cells, retention of valuable proteins in downstream processing of biopharmaceuticals, rejection of organic matter and micro-organisms in water treatment, or salt permeation in desalination. The incorporation of nanosheets within membrane structures can potentially lead to enhancements in such properties as the antifouling ability, hydrophilicy and permeability of membranes, with concomitant improvements in the flux/selectivity balance. Graphene nanosheets and derivatives such as graphene oxide and reduced graphene oxide have been investigated for this purpose, for example inclusion of nanosheets within the active layer of Reverse Osmosis or Nanofiltration membranes or the blending of nanosheets as fillers within Ultrafiltration membranes. This review summarizes the incorporation of graphene derivatives into polymeric membranes for water treatment with a focus on a number of industrial applications, including desalination and pharmaceutical removal, where enhancement of productivity and reduction in fouling characteristics have been afforded by appropriate incorporation of graphene derived nanosheets during membrane fabrication.

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Characterization and performance of nanofiltration membranes

Cited by 54 publications

References 99 publications

Effects of Inorganic Nano-Additives on Properties and Performance of Polymeric Membranes in Water Treatment

Effects of Inorganic Nano-Additives on Properties and Performance of Polymeric Membranes in Water Treatment

Effects of hydrophilic CuO nanoparticles on properties and performance of PVDF VMD membranes

Incorporation of Graphene-Related Carbon Nanosheets in Membrane Fabrication for Water Treatment: A Review

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