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Download Chemical Separations with Liquid Membranes by Richard A. Bartsch and J. Douglas Way (Eds.) PDF

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By Richard A. Bartsch and J. Douglas Way (Eds.)

content material: Chemical separations with liquid membranes : an summary --
A tribute to Norman N. Li --
conception and mechanisms --
Mechanistic reports of carrier-mediated delivery via supported liquid membranes --
Rational layout of liquid membrane separation structures --
Facilitated shipping of alkali steel cations via supported liquid membranes with fatty acids --
Emulsions for liquid membrane extraction : houses and peculiarities --
coaching and splitting of emulsions for liquid membranes --
Mathematical modeling of carrier-facilitated shipping in emulsion liquid membranes --
layout of macrocyclic companies for liquid membranes --
New strategies in layout of ion-specific providers : ways in accordance with computing device chemistry and infrequent earth complicated chemistry --
New multidentate ligand companies for macrocycle-facilitated steel ion delivery throughout liquid membranes --
hugely selective delivery of heavy steel ions via novel amide compounds --
Transition steel cation separations via organophosphorus compounds in liquid membrane procedures --
Sugar separation utilizing liquid membranes and boronic acid providers --
fresh advances in emulsion liquid membranes --
hole fiber-contained liquid membranes for separations : an summary --
Facilitated delivery of carbon dioxide via supported liquid membranes of aqueous amine ideas --
Facilitated delivery of carbon dioxide via useful membranes ready by means of plasma provide polymerization utilizing amines as provider --
Separation of ethylene from ethane utilizing perfluorosulfonic acid ion-exchange membranes --
Facilitated shipping of unsaturated hydrocarbons in perfluorosulfonic acid (Nafion) membranes --
Heavy steel ion separation via sensible polymeric membranes --
Use of emulsions, microemulsions, and hole fiber contractors as liquid membranes --
box trying out of a liquid-emulsion membrane method for copper restoration from mine strategies --
removing of selenium from infected waters utilizing emulsion liquid membranes --
Supported liquid membranes in steel separations --
Cesium removing from nuclear waste water via supported liquid membranes containing calix-bis-crown compounds --
Separation of radiotoxic actinides from reprocessing wastes with liquid membranes.

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Additional resources for Chemical Separations with Liquid Membranes

Example text

7 χ 10" m s' ). Apparently, the diffusion limited model can not be applied to determine the transport parameters of carrier 7. Hence, kinetics must influence the transport mechanism that lowers the transport rate as an additional resistance. Kinetically limited transport; determination of a. In this section the influence of decomplexation kinetics in membrane transport will be discussed. An overview will be given of the different methods to distinguish diffusion-limited transport from kinetically limited transport.

Influence of the Urea Concentration in the Source Phase on the Assisted (Initial Minus Blank) Flux Through a Supported Liquid Membrane Using Carrier 15 ([CA] = 6 mM). The line is drawn according to the model and the symbols are measure values (Adapted from ref. 69). ; ACS Symposium Series; American Chemical Society: Washington, DC, 1996. 3. CHRISSTOFFELS ET AL. 53 Carrier-Mediated Transport Table 9. Total Urea Fluxes Carrier-Assisted Urea Transport Through Supported Liquid Membranes, D and K (Adapted from ref.

In liquid membrane transport studies, counter transport of protons is generated by applying a pH gradient and by using proton-ionizable carriers (azacrown ethers) in the membrane phase. 4 4 3 3 3 137 + 106 125 + Carrier-Assisted Transport of Anions. Assisted transport of anions has been investigated less thorougly than cation transport. The measured transport rates are lower and selectivity mostly follows the Hoffmeister series (57): C10 " > Γ > SCN" > N0 - > Br > Cf » C0 -, H P0 ", S0 \ Assisted anion transport through a BLM was first reported by Behr and Lehn, who investigated the transport of amino acids at high pH with a quaternary ammonium salt as carrier (58).

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