The thermodynamic activities of ion pairs were measured el~ctrometrically in a series of aqueous mixtures of monoionic bentonite and the corresponding chlorides. Ion exchange membranes and Ag-AgC1 electrodes were used. The lyotropie order for the various cation species varied somewhat for two different preparations. The apparent relative escaping tendencies of the various cations did not corres...

The present study examined the overloading of ion-exchange membrane adsorbers, a form of frontal chromatography, as the final purification step in the production of mAbs (monoclonal antibodies) produced from CHO (Chinese-hamster ovary) cells. Preferential binding of impurities over antibody product was exploited using commercially available cation- and anion-exchange membranes. Three different ...

Alberti G, Casciola M, Costantino U and Vivani R (1996) Layered and pillared metal(IV) phosphates and phosphonates. Advanced Materials 8(4): 291. Amphlett CB (1964) Inorganic Ion Exchangers. Amsterdam: Elsevier. ClearReld A (ed.) (1982) Inorganic Ion Exchange Materials. Boca Raton, FL: CRC Press. Fritz JS, Gjerde DT and Pohlandt C (1982) Ion Chromatography. Heidelberg: HuK thig. Greig JA (ed.) ...

Herein, we report on the fabrication of a device for removing cations of an anti-analyte ion contained in a sample and an eluent under an electric field. The space in which the electrode is set on both sides of the device is separated into three cells using anion and cation exchange membranes. Each of the cells is packed with either an anion or cation exchange resin. Cation removal is perfor...

During the last 50 years, ion exchange membranes have evolved from a laboratory tool to industrial products with significant technical and commercial impact. Today ion exchange membranes are receiving considerable attention and are successfully applied for desalination of sea and brackish water and for treating industrial effluents. They are efficient tools for the concentration or separation o...

• Ion-exchange nanofibers show extraordinary ionic properties due to their morphology. Nanofibers with ion-exchange functionality are produced via electrospinning, combined pre- or post-functionalization. Further processing a pore-filling matrix is often done improve the of membranes. The nanofiber membranes high potential in electrochemical water treatment applications. In view today’s challen...

The use of polyethersulfone (PES), an excellent but highly hydrophobic thermoplastic, as a matrix material for ionexchange membranes was investigated. To make PES ion-exchangeable, sulfonate groups were introduced to the polymer chains by sulfonation reaction with chlorosulfonic acid. The degree of sulfonation of sPES was estimated to be 21%. Preliminary experiments investigated the effect of p...

This review focuses on the preparation, structure and applications of ion-exchange membranes formed from various materials and exhibiting various functions (electrodialytic, perfluorinated sulphocation-exchange and novel laboratory-tested membranes). A number of experimental techniques for measuring electrotransport properties as well as the general procedure for membrane testing are also descr...

Polymeric ion-exchange membranes have come a long way since their invention, benefiting wide range of processes, ranging from desalination to fuel cells. However, challenges such as alkaline stability, monovalent ion selectivity, cost-effectivity, and process sustainability largely persist. This work showcases stable anion-exchange made by hot-pressing polyelectrolyte complex poly(styrenesulfon...