Showing papers in "Journal of Membrane Science in 2013"

TL;DR: In this paper, the nanoplatelets of graphene oxide included in the preparation of membrane suppress the membrane fouling to such an extent that a fivefold lengthening is achieved of the time between chemical cleanings.

TL;DR: In this paper, the effects of pH and salt on nanofiltration performance have been investigated, and the changes of membrane properties are evaluated by physical, chemical and mathematical characterization methods.

TL;DR: In this article, a comprehensive review on the progress of draw solution for forward osmosis (FO) processes is presented, where an assessment on the advantages and limitations of the existing draw solutes are made.

TL;DR: In this paper, as-prepared graphene oxide (GO) was modified by hyperbranched polyethylenimine (HPEI) and then blended into polyethersulfone (PES) casting solution to prepare PES ultrafiltration membrane via phase inversion method.

TL;DR: In this paper, the first mixed matrix composite membrane made of commercially available poly (amide-b-ethylene oxide) (Pebax®1657, Arkema) mixed with the nano-sized zeolitic imidazole framework ZIF-7 was successfully deposited as a thin layer on a porous polyacrylonitrile (PAN) support.

TL;DR: In this paper, a simple and rapid methodology to characterize the water and solute permeability coefficients (A and B, respectively) and structural parameter (S) of forward osmosis (FO) membranes is presented.

TL;DR: In this article, the polyvinylidene fluoride (PVDF) nanofiber membranes for membrane distillation were optimized to examine their effects on pore size distribution and inorganic additives were added into the dope to improve the electro-spinability of diluted polymer dopes.

TL;DR: In this article, the remarkable synergetic effect between two-dimensional graphene oxide (GO) and one-dimensional oxidized carbon nanotubes (OMWCNTs) on permeation and anti-fouling performance of polyvinylidene fluoride composite membranes was investigated.

TL;DR: In this paper, AgNPs with approximately 15nm in diameter were attached to the surface of polyamide thin-film composite (TFC) membrane via covalent bonding, with cysteamine as a bridging agent.

TL;DR: In this paper, mixed matrix membranes (MMMs) based on the polymer of intrinsic microporosity PIM-1 and the zeolitic imidazolate framework ZIF-8 were prepared and their permeation and sorption properties investigated.

TL;DR: In this article, two types of super-hydrophobic PVDF nanofiber membranes, integrally modified and surface-modified PVDF membranes, have been successfully fabricated by electro-spinning followed by surface modification, which includes dopamine surface activation, silver nanoparticle deposition and hydrophobic treatment.

TL;DR: In this article, the effects of hot pressing and variation of fiber diameter on pore size distribution, porosity, contact angle, gas permeation, and liquid water entry pressure (LEP) were all studied.

TL;DR: In this paper, a composite membrane of sulfonated graphene oxide (s-GO) and SPEEK with various SGO contents was investigated, which significantly increased the proton conductivity of SGO membrane.

TL;DR: In this paper, Amine functionalized multi-walled carbon nanotubes (F-MWCNTs) were used as additive in aqueous solution of 1,3-phenylendiamine (MPD) to enhance the forward osmosis (FO) performance.

TL;DR: Zwitterionic polymer of poly(sulfobetaine methacrylate) (PSBMA) was grafted from polysulfone (PSf) membrane via surface-initiated atom transfer radical polymerization (SI-ATRP) as discussed by the authors.

TL;DR: In this paper, a commercial polyamide reverse osmosis (RO) membrane was surface modified with polydopamine deposited from buffered, aqueous dopamine solution at ambient conditions.

TL;DR: In this paper, a thin-film selective layer of the composite hollow fiber was formed through interfacial polymerization on the inner surface of a polyethersulfone (PES) ultrafiltration (UF) membrane substrate with branched polyethyleneimine (PEI) and trymesoyl chloride (TMC) employed as the monomers in aqueous and organic phases, respectively.

TL;DR: In this article, variations in the thermodynamic and kinetic properties of polyethersulfone casting solution caused by polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) additives were investigated.

TL;DR: In this article, new mixed matrix membranes (MMMs) incorporating zeolitic imidazolate frameworks (ZIF-71) into polyether-block-amide (PEBA) were prepared for biobutanol recovery from acetone-butanol-ethanol (ABE) fermentation broth by pervaporation (PV).

TL;DR: In this article, mixed matrix membranes (MMMs) with uniform morphology comprising ZIF-8 nanoparticles were fabricated for industrial nature gas purification and C 3 H 6 /C 3 H 8 separation.

TL;DR: In this paper, a thin film composite (TFC) polyamide active layer was prepared by interfacial polymerization on the polysulfone-nanocomposite (PSfN0.5) substrate, and the resulting TFC-PFSN 0.5-TFC had an FO water flux as high as ∼80 LMH in the active layer facing DS (AL-DS) orientation and ∼40LMH in AL-FS orientation.

TL;DR: In this article, the authors investigated the membrane fouling behavior in forward osmosis under conditions simulating the osmotic dilution process and the use of hydrodynamic methods without using any cleaning chemicals.

TL;DR: In this article, modified mesoporous silica nanoparticles (mMSN)/polyamide (PA) thin film nanocomposite (TFN) membranes were prepared via interfacial polymerization of trimesoyl chloride (TMC) and piperazine (PIP).

TL;DR: In this paper, a chemical cross-linking reaction took place between the phenol groups of tannic acid and acyl chloride groups of trimesoyl chloride (TMC) in the water/oil interfacial zone.

TL;DR: In this article, a thin film composite (TFC) osmotic membranes based on polyacrylonitrile (PAN) and polyamide were prepared for FO applications.

TL;DR: In this paper, the effect of temperature on CO 2 permeability and CO 2 selectivity over PEBAX ® was studied between 30°C to 70°C, while the selectivity was not significantly affected at 30ÂC.

TL;DR: In this paper, a novel approach was explored to obtain a highly hydrophilic membrane surface via plasma induced grafting of polyethylene glycol (PEG) and subsequent TiO2 particles deposition onto the membrane surface The mechanism of oil affinity onto a membrane surface was quantitatively investigated by the extended Derjaguin-Landau-Verwey-Overbeek theory.

TL;DR: In this paper, a polyethersulfone (PES) flat-sheet membrane was manufactured by the phase inversion method for wastewater treatment application, and the nanoparticles size distribution was characterized by scanning electron microscope (SEM) and dynamic light scattering (DLS) method to explore the effect of nanoparticle aggregation.

TL;DR: In this paper, the authors studied the relationship between physicochemical membrane bulk properties and power density (power output per unit membrane area) and developed a model based on multiple linear regression for gross power density which provides a better understanding on the dominant performance-determining membrane properties in RED to generate power from salinity gradients.

TL;DR: In this article, the role of membrane separations within current and future biofuel and biorefinery scenarios is highlighted and a reflection of membrane-based downstream processes required in a biore-finery transforming cellulose into an itaconic acid.