Showing papers in "Journal of Membrane Science in 2009"

TL;DR: In this article, the properties of polyamide thin films formed via identical interfacial polymerization conditions over porous polysulfone supports with different physical and chemical properties were discussed, including dextran rejections, water contact angles, and surface roughness statistics.

TL;DR: In this paper, a pressure retarded osmosis (PRO) model was developed to predict water flux and power density under specific experimental conditions, relying on experimental determination of the membrane water permeability coefficient (A), the membrane salt permeability coefficients (B), and the solute resistivity (K).

TL;DR: In this article, a modified 3,4-dihydroxyphenylalanine (DOPA) and dopamine self-polymerized and adhered firm to the membrane surfaces in mild aqueous environments.

TL;DR: In this article, metal-organic framework 5 (MOF-5) nanocrystals with a high surface area (3000m 2 /g) and high thermal stability (up to 400°C) were synthesized and added to Matrimid ® to form mixed-matrix membranes for gas separations.

TL;DR: In this article, two reverse osmosis (RO) brine streams with total dissolved solids concentrations averaging 7500 and 17,500 mg/L were further desalinated by VEDCMD and FO.

TL;DR: In this paper, a tetraethoxysilane (TEOS) sol-gel process with a wet-spinning method was used to construct hollow fiber ultrafiltration (UF) membranes.

TL;DR: In this article, the authors compared different macromolecular additives, such as polyvinylpyrrolidone (PVP), poly(ethylene glycol) (PEG), polyethylene oxide (PE), polypropylene oxide (OPO), bovine serum albumin (Bovine albumin), and poly(polyethylene polyoxide) (Pluronic®, Plu), in order to determine the additive that should be preferred.

TL;DR: In this article, the metal adsorbability of the chitosan electrospun nanofiber (∼235mm in diameter) mats was examined in an aqueous solution.

TL;DR: In this article, the fundamental science of fabricating polyvinylidene fluoride (PVDF) hollow fiber membranes is explored and the correlation among membrane morphology, crystallinity and mechanical properties as functions of non-solvent additives and dope rheology in the phase inversion process is elucidated.

TL;DR: In this paper, the authors studied the power density and energy efficiency of a stack of 50 cells with a spacer thickness of 200 mu m and a cell resistance of 0.345 Omega.

TL;DR: In this article, pressure retarded osmosis (PRO) and reverse electrodialysis (RED) are used to extract energy from the mixing of freshwater and seawater.

TL;DR: In this article, the effects of the air gap, viscosity and non-solvent concentration on fiber morphology have been studied and it has been determined that visco-ity is the dominating factor for ceramic systems.

TL;DR: In this article, a polyvinylidene fluoride (PVDF) ultrafiltration membrane was modified by dispersing nano-sized titanium(IV) oxide (TiO 2 ) particles in a PVDF solution.

TL;DR: In this article, a synthesis method of polyamide nanocomposite film of about 400-800nm thickness coated over porous polysulfone support via interfacial polymerization to produce thin film polyamide membrane with enhanced properties is described.

TL;DR: In this paper, the current state-of-the-art for polymeric membranes applicable to hydrogen purification is considered, and the different approaches for enhancing intrinsic gas-separation performance are evaluated.

TL;DR: In this paper, multi-walled carbon nanotubes (MWNTs) functionalized by isocyanate and isophthaloyl chloride groups were synthesized via the reaction between carboxylated carbon Nanotubes and 5-isocyanato-isophthoric chloride (ICICIC).

TL;DR: In this paper, a defect-free ultra thin PVAm/PVA blend facilitated transport membrane cast on a porous polysulfone (PSf) support was developed and evaluated.

TL;DR: In this paper, the authors report that supported ionic liquid membranes (SILMs) outperform standard polymers for the separations of CO 2 /N 2 and CO 2/CH 4, even under continuous flow mixed gas conditions.

TL;DR: In this article, the authors compared six commercial available membrane pairs Qianqiu Heterogeneous Ion Exchange Membrane (AEM and CEM), Fumasep (FAD and FDK) and Selemion (AMV and CMV) pair.

TL;DR: In this article, a series of crosslinked PEG-based hydrogels were synthesized using poly(ethylene glycol) diacrylate as the crosslinker and poly(methylenesyl acrylate, 2-hydroxyethyl acrylated, or acrylic acid as comonomers.

TL;DR: In this paper, Al2O3 entrapped polyethersulfone (PES) ultrafiltration membranes were prepared and applied to activated sludge filtration in order to evaluate their fouling characteristics.

TL;DR: In this article, the authors used room temperature ionic liquids (RTILs) in place of traditional solvents in liquid membranes and showed that stabilized RTIL-membranes outperformed standard polymers for the separations of CO 2 /CH 4 and CO 2/N 2 (considering ideal gas permeabilities).

TL;DR: In this article, a novel TiO 2 nanoparticle self-assembly membrane was prepared based on ultrahigh molecular weight poly(styrene-alt-maleic anhydride)/poly(vinylidene fluoride) (SMA/PVDF) blend membrane.

TL;DR: In this paper, a sliver nanoparticle colloid solution of a porous ceramic modified by an aminosilane coupling agent, 3-aminopropyltriethoxysilane (APTES), was used for drinking water treatment.

TL;DR: PIM-1, a glassy, spirobisindane-based ladder polymer is a novel intrinsically microporous membrane material as discussed by the authors, which exhibits very high permanent gas permeabilities coupled with moderate selectivities.

TL;DR: In this paper, the authors used flatsheet polyvinylidenefluoride (PVDF) of 0.22μm pore size to modify a hydrophobic membrane by chitosan solution for reducing protein fouling.

TL;DR: In this paper, the effect of both Reynolds (Re) and Schmidt (Sc) numbers on the Sherwood (Sh) number for narrow channels with spacers, closely simulating conditions of feed-side channels in spiral-wound modules was studied.

TL;DR: In this paper, an electrospun polyacrylonitrile (PAN) nanofibrous scaffold was used as a mid-layer support in a new kind of high flux thin film composite (TFNC) membranes for nanofiltration (NF) applications.

TL;DR: In this article, four nanofiltration membranes, two negatively and two positively charged, were fabricated by interfacial polymerization, and three different amines, ethylenediamine (EDA), diethylenetriamine (DETA), and hyperbranched polyethyleneimine (PEI), were selected to react with two acyl chlorides, trimesoyl chloride (TMC) and terephthaloyl chloride (TPC).

TL;DR: In this paper, the effect of variation in polyamide structure of thin film composite nanofiltration membranes resulting from variation in monomers on flux and rejection properties was investigated, and the physicochemical characteristics of the membranes thus obtained were determined by infra-red spectroscopy, SEM, AFM, contact angle measurement and molecular model analysis.