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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Liquid membranes"”.
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Immobilized liquid membranes for facilitated transport and gas separation
… Gas separation using facilitated transport membranes has been the subject of considerable research for many years. Immobilized liquid membranes (ILMs) are an important class of facilitated transport membranes. Despite their potential to provide superior performance, they could not achieve …
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Non-Equilibrium Transport Across Liquid Membranes Using Coordination Cages
… However, the equilibrium constraint within bulk liquid membrane systems limits molecular transport efficiency to 50%, hindering widespread adoption. This thesis addresses this limitation by innovatively propelling compound transport away from equilibrium, utilizing light and chemical gradients. …
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Fabrication, Validation, and Performance Evaluation of a New Sampling System for the In-Situ Chemical Speciation of Chromium Ions in Groundwater Using Supported Liquid Membranes (SLMs)
… design of the sampler is based on the Supported Liquid Membrane (SLM) extraction technique, which utilizes charged organic carrier molecules loaded onto a polymeric (Teflon®) support membrane and the principles of electrostatics to selectively transport Cr ions through an ion-pairing mechanism. …
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Aplicación de las tecnologías de membrana líquida a procesos de interés industrial y medioambiental.
… nickel using novel ultrasound-prepared supported liquid membranes containing Cyanex 272 as Carrier. Physicochemical Problems of Mineral Processing. 52 (1) (2016) 77-86. 2.- Comparative study of copper (II) removal/recovery from aqueous solutions by bulk liquid membranes containing six different …
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Studies of the complexation behaviour of transition metals applicable in membrane technologies
… these 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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Novel inorganic membranes for gas separation
… matrix, amorphous silica, and supported ionic liquid membranes. Supported ionic liquid CO₂/CH₄ selective membranes were synthesized in our laboratory by applying room temperature ionic liquids (RTILs) to porous inorganic α-alumina supports. The supported ionic liquid membranes (SILMs) …
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Electrochemical facilitated transport: a study in synthesis, simulation and experimentation
… to influence the movement of ions across a bulk liquid membrane through use of an electrochemically modifiable crown ether will be examined in this work. This process will be referred to as electrochemical facilitated transport. The design and synthesis of a new ferrocenophane crown ether for use …
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Designing a Membrane Module for Determining the Permeance of High Fluxing Membranes and the Testing RTIL-Membranes for Dehumidification.
… involved with testing Room Temperature Ionic Liquid(RTIL)-membrane for dehumidifying gases. RTIL-membranes or Supported Ionic Liquid Membranes (SILMs) have advantageous performance for the separations of the gas pair CO2/CH4 and CO2/N2. Previous research did not separate the membrane mass …
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Processes Involving Acid Gas Solubility In Room Temperature Ionic Liquids (RTILs)
… dry gas feed of CO2/CH4 by four Stabilized Ionic Liquid Membranes (SILMs); 1-Ethyl-3-methlyimidazolium dicyanamide, [emim][DCA], 1-ethyl-3-methylimidazolium thiocyanate, [emim][SCN], 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [emim][Tf2N] and 1-Butyl-3-methylimidazolium …
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Separation of alkali metal cations and alkaline earth cations using ionizable crown ethers
… and proton-coupled transport across bulk liquid membranes were utilized to assess the metal ion complexing properties of these ligands. To provide greater insight into the factors which control metal ion complexation by ionizable crown ethers in solvent extraction and membrane transport …
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Selbstanordnung von Saturnpartikeln
… können als ein Spezialfall einer Supported Liquid Membrane angesehen werden. Es werden die Permeabilitätsunterschiede von Kohlenstoffdioxid gegen Luft sowie Luft gegen Schwefelhexafluorid betrachtet. Die resultierenden Werte stimmen in zufriedenstellender Weise mit theoretisch – nach dem für …
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Room Temperature Ionic Liquid (Rtil) Membranes For Bio-Methane Dehumidification
… The main problems with polymer dehumidification membranes are methane loss and the susceptibility of polymer materials to plasticization by H2O [6]. Water vapor does not plasticize room temperature ionic liquid membranes (RTIL-membranes) according to literature data, and RTIL-membranes have …
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Study of vapor/gas permeation using thin immobilized liquid membrane
To improve liquid membrane selectivity and stability for removal of vapor and gases from a gas stream, a thin immobilized liquid membrane (ILM) has been studied. Low vapor pressure liquid solvent/solutions were immobilized in part of the micropores of a hydrophilic, hydrophobic or ceramic hollow …
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Reverse-Selective Behavior Of The Room Temperature Ionic Liquid Based Membranes
… the reverse-selective potential of RTIL based membranes by lowering the solubility of the non-condensing gases like N2 and CH4. It explored reverse-selectivity by measuring the permeance of carbon dioxide, nitrogen, methane, propylene, propane, 1-butene, and butane in supported ionic liquid …
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Development of membrane extraction techniques for water quality analysis
… Simultaneous extraction and concentration with membranes during on-line analysis of semivolatile organic compounds was studied. The influences of distribution coefficient, solvent polarity, solvent and water flow rates, as well as membrane material on enrichment factor and extraction efficiency …
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Study of Freeze-Cast Porous Silica Nanoparticle-Based Composites
… 100 m2/g, demonstrating potential application as liquid membranes.
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Biphasic Cellulose Acetate/Rtil Membranes And Functionalized Graphene Adsorbents For Natural Gas Processing: Experimental And Molecular Simulation Studies
In this dissertation, gas separation using membranes is investigated for natural gas upgrading. The main objectives of this study are separation of high value hydrocarbons such as propane (c3h8) from natural gas and carbon dioxide (co2) separation from light gases such as nitrogen (n2) and methane …
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