Journal ArticleDOI
Separation of Liquid Solutions by Contained Liquid Membranes
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TLDR
In this paper, contained liquid membranes (CLM) are used for liquid solution separation by confining the membrane liquid between two sets of microporous hollow fibers (MHFs) to carry the feed or the strip solution under proper phase pressure condition vis-a-vis the membrane phase.Abstract:
The technique of contained liquid membranes (CLM) for liquid solution separation is discussed. The CLM is obtained by confining the membrane liquid between two sets of microporous hollow fibers (MHF). The lumen of the hollow fiber carries the feed or the strip solution under proper phase pressure condition vis-a-vis the membrane phase. Various possible structural configurations of the CLM are illustrated with respect to the nature of microporous hollow fiber substrate, the feed solution and the liquid membrane. The contributions of different resistances to the solute transport rate are identified. Some basic experimental data obtained in small CLM permeators are presented for two systems with organic liquid membranes to illustrate how steady state separation is achieved after an initial unsteady period. The considerable advantages of the CLM structure over more traditional liquid membrane techniques such as supported liquid membrane (SLM) with respect to membrane stability, membrane regeneration ...read more
Citations
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Journal ArticleDOI
Stability of supported liquid membranes: State of the art
TL;DR: In this paper, the authors present a state-of-the-art review on the stability of supported liquid membranes (SLM) and various mechanisms for explaining these phenomena are treated in detail.
Journal ArticleDOI
Innovations in separations technology for the recycling and re-use of liquid waste streams
TL;DR: In this paper, the authors review three separations technologies that facilitate recycling of valuable chemicals contained within wastewater streams and provide the means for extracting valuable contaminants when the concentrations of such so lutes are low.
Journal ArticleDOI
Improved Techniques in Liquid Membrane Separations: An Overview
TL;DR: A brief overview of improved liquid membrane (LM) separation techniques can be found in this paper, including modified bulk, supported and emulsion liquid membranes as well as hollow fibre contained liquid membranes, electrostatic pseudo liquid membranes (ESPLIM) reverse micelle and recently developed hybrid (HLM) and other LM configurations.
Journal ArticleDOI
Nondispersive membrane solvent back extraction of Phenol
TL;DR: In this article, a non-reactive back extraction of phenol from methyl isobutyl ketone into caustic solutions has been studied using microporous polymeric membranes in flat as well as hollow-fiber form.
Journal ArticleDOI
Modeling hollow fiber membrane contactors using film theory, Voronoi tessellations, and facilitation factors for systems with interface reactions
John D. Rogers,Richard L. Long +1 more
TL;DR: In this paper, a model to evaluate and predict performance of hollow fiber membrane contactor modules is presented for the extraction of compounds with interfacial chemical reactions, based on the film theory approach combined with facilitation factors.
References
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Journal ArticleDOI
Separation of Metal Species by Supported Liquid Membranes
TL;DR: In this article, a review of the works performed in the Separation Chemistry Group of the Chemistry Division of Argonne National Laboratory on the transport and separation properties of supported liquid membranes (SLM) is presented.
Journal ArticleDOI
Dispersion‐free solvent extraction with microporous hollow‐fiber modules
Ravi Prasad,Kamalesh K. Sirkar +1 more
TL;DR: Determination experimentale des coefficients de transfert de matiere pour des modules hydrophobes ou hydrophiles as discussed by the authors, mise en place d'une correlation for decrire les result.
Journal ArticleDOI
Solvent extraction with immobilized interfaces in a microporous hydrophobic membrane
TL;DR: In this article, a new technique for solvent extraction with immobilized interfaces in a hydrophobic microporous membrane is described, where no dispersion or coalescence is necessary.
Journal ArticleDOI
Permeation through liquid surfactant membranes
TL;DR: In this article, a novel separation technique based on the selectivity of a liquid membrane composed of surfactants and water is described, and the permeation mechanism is discussed in terms of the surfactant concentration, the structure and chain length, the nature of permeate and the solubility of the permeate in water.
Journal ArticleDOI
Lifetime of supported liquid membranes: the influence of interfacial properties, chemical composition and water transport on the long-term stability of the membranes
TL;DR: In this article, the authors measured the permeability coefficients of some metal species through selected supported liquid membranes (SLM) over extended periods of time, in the presence and absence of osmotic pressure gradients.
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