Membrane

The separation performance of K+ ions from KCl solution has been investigated by electrodialysis at constant voltage mode of operation as a function of flow rate and voltage scanned. TS-1-10 model electrodialysis equipment (Tokuyama) modified with rotameters was employed in experimental runs. The ef

The most common reverse osmosis (RO) membranes which attained the stage of economic application in desalination plants are made of cellulose acetate (CA) or polyamide (PA), in either hollow fiber (HF) or spiral wound (SW) configurations. The first application problem of CA membrane is its sensitivit

The streaming potential measured through the wall of a charged ceramic UF membrane is a relevant parameter to predict the retention properties of the considered membrane for ionic solutions. It is more satisfying than the electrophoretic measurement of the material particles used to prepare the memb

Molecularly imprinted polymeric membranes were prepared from various oligopeptide tweezers by adopting Boc-D-Trp as a print molecule. Molecularly imprinted membranes recognized the D-isomer of Ac-Trp, of which absolute configuration was the same as that of the print molecule, from racemic Ac-Trp mix

This paper presents a study that aims to overcome oxygen limitations in membrane-attached biofilms in the Extractive Membrane Bioreactor (EMB), by using nitrate instead of oxygen as an electron acceptor. In the EMB target organic compounds are extracted through a dense membrane into a bioreactor, wh

The separation of alcohol–water mixtures by pervaporation has been preferentially carried out through hydrophobic membranes because it is more practical to permeate alcohol through the membrane. Nevertheless, most polymeric membranes are water permselective as the molecular size of water is smaller

In order to stabilize the production of highly concentrated ethanol, a coupled fermentation/pervaporation process using ethanol permselective silicalite membranes coated with silicone rubber was studied. In case of the silicalite membrane without coating, the membrane flux and the ethanol concentrat

The pervaporation performances of a series of functionalized syndiotactic poly(styrene-co-4-methylstyrene) (SPSM) membranes for various alcohol mixtures were investigated. The effect of functionalization on the thermal properties and polymer structure of the SPSM membranes were also investigated. Th

New membranes have been prepared by the electropolymerization of a new pyrrole dibenzo-18-crown-6 monomer with the pyrrole. The results present the characterization of the membrane recognition properties in the presence of different electrolytes. Films present a sensitivity to divalent cations like

Two kinds of cross-linked quaternized chitosan (q-chito) membranes were used in this study. One was prepared by coating a casting solution of q-chito containing glutaraldehyde (GA) with a HCl catalyst onto a porous polyethersulfone (PES) support (membrane A). The other was membrane A further cross-l