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Showing 1 to 20 of 23 for “"Hydrophobic membrane"”.
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A Colorimetric Sensor Array for Aqueous Analyses
… a wide range of chemical properties. By printing hydrophobic dyes on a hydrophobic membrane, sensor arrays are easily prepared with substantial chemical selectivity for the identification and quantification of various chemicals dissolved in water with a concentration range of 0.1 M to 1 muM. Upon …
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Model Membranes Study the Lipid-Reactivity of HIV-1 Antibodies and Vaccine Antigen
<p>One promising HIV-1 vaccine target is the membrane-proximal external region (MPER) of viral gp41. MPER is poorly immunogenic, however, the two rare neutralizing antibodies (NAbs), 2F5 and 4E10, bind to MPER with great neutralizing ability. Although their neutralizing mechanism represents a …
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Membrane Distillation for Leachate Treatment with Fenton Pre-Coagulation Treatment Process
… treatments is required. In this study, membrane distillation (MD) has been used along with Fenton treatment process for pre-coagulation to achieve an effective removal of contaminants. MD is a technology derived with vapor pressure difference across the hydrophobic membrane which traps …
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Scalable Micro/Nanostructured Surfaces for Thin-Film Condensation Heat Transfer Enhancement in Steam Power Plants
… from the vapor side to the condenser surface. Hydrophobic surfaces achieved by either chemical methods (e.g., coating treatment) or physical methods (e.g. structures design) have shown great promise in enhancing condensation heat transfer by promoting dropwise condensation. However, the short …
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Functional particles for controlled release and cell surface engineering
… that contain a hydrophilic core surrounded by a hydrophobic membrane, each of which can be loaded with a wide array of small and large molecules of interest. With the capacity to engineer and compartmentalize the properties of these particles, they can be tailored with unique design specifics to …
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MITIGATION OF TEMPERATURE POLARIZATION AND MINERAL SCALING IN MEMBRANE DISTILLATION: THE IMPACT OF INDUCTION HEATED ELEMENTS
… the last decade, there is a growing interest in membrane distillation (MD) technology, a thermally driven membrane separation process, to treat high salinity water or contaminated wastewater. However, MD commercialization is still limited by technical challenges such as temperature polarization …
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Surface Modification of PVDF Membranes for Treating Produced Waters by Direct Contact Membrane Distillation
<p>Direct contact membrane distillation is a promising unit operation for treating hydraulic fracturing flow back and produced water. However, while a hydrophobic membrane is essential to prevent the passage of water from the feed to the permeate side, fouling by dissolved organic species can …
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Conversion of Saline Water to Fresh Water Using Air Gap Membrane Distillation (AGMD)
Membrane distillation (MD) is a combination of evaporation of water from saline solution and diffusion of vapour through a hydrophobic membrane. The driving force is the vapour pressure difference created by temperature difference across the membrane. With development of hydrophobic membranes at a …
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MODELLING CRYSTALLIZATION FOULING IN LIQUID-TO-AIR MEMBRANE ENERGY EXCHANGERS
Micro-porous membranes are used in membrane-based separation processes to separate water from an aqueous solution. Liquid-to-air membrane energy exchangers (LAMEEs) use membranes to control humidity and temperature in heating, ventilation and air-conditioning (HVAC) systems. A semi-permeable …
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Nanoemulsion-like Polymersomes for Nanoreactors
… size of polymersomes having rubbery and glassy membranes was controlled through mechanical and kinetic approaches. In the mechanical approach, the extrusion method was employed. For the kinetic approach, the amount of co-solvent and the hydrophilic fraction of amphiphilic block copolymer were …
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Ultrafast 2D IR spectroscopy of membrane peptide systems
Plasma membranes are the main liaisons between the intercellular and extracellular environment, playing a critical role in numerous biological processes. Recent research has challenged the long-standing "fluid mosaic model," representing membranes as densely packed, heterogeneous environments. …
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Studies of the complexation behaviour of transition metals applicable in membrane technologies
… innovative technologies is the Supported Liquid Membrane (SLM) technique. The SLM technology is a membrane-based solvent extraction method that uses a micro-porous hydrophobic membrane as supporting layer. This membrane is impregnated with an organic solvent containing the specific carrier …
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Assessment of performance and efficiency of membrane distillation for treatment of impaired water and brine with high scaling potential
Water recovery is limited in pressure-driven membrane processes such as reverse osmosis (RO) and nanofiltration (NF) due to increase in scaling risk and osmotic pressure of the feed water with concentration. Membrane distillation (MD) is an emerging thermally-driven membrane desalination processes …
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Characterization of P39, A <i>Borrelia burgdorferi</i> Specific Protein
… P39 to both the outer envelope and inner membrane, but noninfectious isolates had increased levels of P39 in the inner membrane and cytosol as compared to infectious isolates. Third, flow cytometry was used to determine if P39 expression is uniform throughout a population of spirochetes. …
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Fundamental study of hydrophobic microporous membrane contactors for the recovery of insoluble oil from oil-water mixtures
… work was to advance the understanding of a membrane contactor process for the recovery of insoluble oil from water. The hydrophobic hollow fiber membrane had been successfully tested in our laboratories for oil recovery from algae slurries. However, a thorough study to understand the …
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Enhanced membrane distillation : analytical and deionization applications
Membrane distillation (MD) is a newer technology that is being investigated for applications such as seawater desalination and concentration of fruit and sucrose solutions. The major advantage of MD over traditional thermal distillation is that it requires a substantially lower thermal energy …
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Surface modification of polymer membranes by self-organization
Water filtration processes employing polymer membranes have become increasingly important over the past forty years. Due to their high efficiency and modularity relative to conventional processes, membrane separations are among a suite of emerging water treatment technologies which will make …
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Pore Wetting in Desalination of Brine Using Membrane Distillation Process
… is one of the state-of-the-art pressure-driven membrane desalination technologies, it is incapable of desalinating high-salinity streams due to the very high osmotic pressure to overcome. Membrane distillation (MD) is one of the emerging methods, which has attracted much attention for …
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CFD simulation of polarization phenomena in direct contact membrane distillation systems
Direct contact membrane distillation (DCMD) is a thermal process in which warm feed and cool distilled water flow on opposite sides of a hydrophobic membrane. The temperature difference causes water to evaporate from the feed, travel through the membrane, and condense in the distillate. Because …
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Separation of various organic-organic and aqueous-organic solutions via pervaporation
… polymers are able to withstand them. An ideal membrane would be polymeric having a high thermal, chemical and mechanical stability. Such a membrane is made of a copolymer of polydimethyldioxole and tetrafluoroethylene known as PDD-TFE of the CMS-3 variety with a very high free volume. This …
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