Showing papers in "Journal of Membrane Science in 2011"

TL;DR: A comprehensive overview of recent progress on the production and modification of polyvinylidene fluoride (PVDF) membranes for liquid-liquid or liquid-solid separation can be found in this article.

TL;DR: A review of the development of reverse osmosis (RO) membrane materials can be found in this paper, where an overview of RO performance in relation to membrane materials and methods of synthesis is provided.

TL;DR: In this paper, the authors present a classification of anion exchange membranes for alkaline fuel cells, based on the nature and the properties of these membranes for both commercial and non-commercial applications.

TL;DR: In this paper, the authors describe the preparation, characterization and evaluation of performance and antifouling properties of mixed matrix nanofiltration membranes, which are prepared by acid oxidized multiwalled carbon nanotubes (MWCNTs) embedded in polyethersulfone as matrix polymer.

TL;DR: In this paper, a tradeoff relation and upper bound between water permeability and water/salt selectivity are observed. But, the authors do not consider the effect of sample size and measurement variables (e.g., pressure and salt concentration in the case of salt rejection).

TL;DR: The WaterCAMPWS, a Science and======Technology Center of Advanced Materials for the Purification of Water with Systems under the National Science Foundation Grant No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST); and Oasys Water Inc..

TL;DR: In this article, a review describes palladium and palladium alloy membranes for hydrogen separation prepared by different fabrication methods and using different membrane supports, and several correlations of structure and function for those membranes are provided based on mechanistic considerations of permeance along with structural properties and membrane morphologies.

TL;DR: In this article, a combination of chemical and mechanical modifications was found to have significant effects on surface free energy, roughness, surface pore size and protein absorption resistance as well as hydrophilicity.

TL;DR: In this article, a thin film composite (TFC) polyamide forward osmosis (FO) membranes with tailored support structure were prepared via phase inversion, and the polyamide rejection layers were synthesized by interfacial polymerization.

TL;DR: In this paper, the authors consider the mechanism of scale formation and the properties of alkaline, non-alkaline and silica based scales that are encountered when reverse osmosis is used in desalination, brackish water and wastewater recycling applications.

TL;DR: In this paper, the results on the commonly used chemical fertilizers as FO draw solution were reported based on the currently available FO tech- nology, about nine commonly used fertilizers were finally screened from a comprehensive list of fertilizers and their performances were assessed in terms of pure water flux and reverse draw solute flux.

TL;DR: The newly developed MOF membrane ZIF-8 separates an equimolar ethene/ethane mixture at room temperature for 1 and 6 bar feed pressure, respectively, with a selectivity of 2.8 and 2.4 as discussed by the authors.

TL;DR: In this paper, an overview is given of recent advances in supported membranes based on ionic liquids, including issues such as methods of preparation, transport mechanisms, configurations, stability, fields of application and process intensification using supported ionic liquid membranes.

TL;DR: In this article, the support layers of two commercially available thin film composite reverse osmosis membranes were modified to enhance their hydrophilicity, which resulted in an increase in the porosity and reduced internal concentration polarization.

TL;DR: In this paper, the authors discuss how membrane engineering contributes to realization of the principles of process intensification, and present an overview of current developments in the field of membrane operations and their place in the intensification of chemical manufacturing and processing.

TL;DR: In this article, a parametric analysis of BSCF-Oxygen Transport Membrane was performed at 1000°C with pure oxygen as the feed and argon as the sweep.

TL;DR: In this article, the authors proposed a novel thin film composite membrane for engineered osmosis (EO), which comprises an electrospun polymeric nanofiber support layer and a polyamide skin layer formed by in situ polymerization.

TL;DR: In this paper, the authors investigated the physical and chemical parameters affecting forward osmosis flux performance during microalgae separation and reported that the presence of Mg 2+ in the feed water had detrimental effect on algal fouling.

TL;DR: In this article, thin film nanocomposite of polyamide and nano-NaX zeolite (40-150nm) membranes was coated via interfacial polymerization of trimesoyl chloride (TMC) and m-phenylenediamine (MPD) monomers over porous polyethersulfone ultrafiltartion support.

TL;DR: A new approach to fabricate thin film composite (TFC) membranes via interfacial polymerization for forward osmosis (FO) applications has revealed that it is possible to design TFC-FO membranes with fully sponge-like structure and likely anti-fouling characteristics while maintaining a high water flux.

TL;DR: In this article, green tea extract was used for nanoparticle (NP) synthesis, instead of the well-known sodium borohydride, which can act as both chelating/reducing and capping agents for the nanoparticles.

TL;DR: Diffusion dialysis (DD) is an ion exchange membrane (IEM) separation process driven by concentration gradient and has been applied for separation and recovery of acid/alkali waste solutions in a cost-effective and environmentally friendly manner as discussed by the authors.

TL;DR: In this paper, polyvinylidene fluoride (PVDF) based ultrafiltration membranes were prepared from a PVDF/nano γ-Al2O3 complex suspension where the γAl 2O3 is well dispersed, and surface chemical compositions, surface and cross-section morphologies and hydrophilicity of the membranes were characterized by Fourier transform infrared spectroscopy (FTIR), Differential Scanning Calorimeter (DSC), Scanning Electron Microscopy (SEM) and contact angle measurement.

TL;DR: In this article, polyacrylic acid (PAA) and titanium dioxide nanoparticles were used for increasing antifouling characteristic of polyvinylidene fluoride (PVDF) membrane.

TL;DR: In this paper, the performance of a RED-stack with profiled ion exchange membranes was compared with a stack with traditional, nonconductive spacers, and it was shown that the hydraulic friction is much lower for the stack with profiles and hence higher Reynolds numbers are possible than in a stack without profiles.

TL;DR: In this paper, the authors used asymmetric microporous hollow fibers made of Torlon® polyamide-imide (PAI) material as the porous substrate followed by polyelectrolyte post-treatment using polyethyleneimine (PEI), which has not been reported previously.

TL;DR: In this article, the authors investigated the fouling and subsequent cleaning of RO membranes fouled by a mixture of organic foulants simulating wastewater effluent, and found that an optimal cleaning agent concentration can be derived from a plot presenting the percent reduction in the foulant-foulant adhesion force versus cleaning agent concentrations.

TL;DR: Trimethylene glycol dimethyl ether (triglyme) was used to reduce the organic fouling tendency of RO membrane by triglymation.

TL;DR: In this article, the authors focused on experimental studies on full-scale spiral wound MD-modules with a membrane surface area of 5-14m 2, and provided a comparison of a four module production charge.

TL;DR: In this article, a solar desalination system based on membrane distillation (MD) is presented and evaluated in the context of a European project, the MEDESOL project, a pilot plant was built to evaluate the system, which consists of three commercial MD modules coupled with a static solar collector's field.