Pervaporative desalination is an efficacious method to obtain fresh water from saline sources. High salt rejection and capacity cope with high-salt concentration solutions are important advantages of pervaporation process. To improve pervaporative performance, researches concentrate on novel membrane types. Water stable metal organic frameworks loaded membranes attract substantial attention amo...

We report here a method for enhancing the non-oxygen functionalization of graphene nanosheets. This improvement is taken place by increasing oxygen functional groups as active reaction sites on oxide cold plasma treatment followed substitution octadecylamine (ODA). The FTIR, XPS, XRD, RAMAN, and TGA analyses verified that modification could increase amount 61%. plasma-treated functionalized nan...

Abstract: Nano pore Mordenite membranes were prepared on the outer surface of ceramic tubular tubes via hydrothermal synthesis and evaluated for dehydration pervaporation of water unsymmetrical dimethylhydrazine UDMH mixtures. Highly water-selective mordenite membranes were prepared and the optimum reaction condition was found to be 24 h crystallization time and 170 °C crystallization temperatu...

Pervaporation (PV) has shown great potential in the separation of butanol aqueous solutions due to their economic and environmental benefits. This work applies polydimethylsiloxane (PDMS) composite membrane separate four isomers (n-butanol, isobutanol, sec-butanol tert-butanol) solution. Based on physical chemical properties isomers, such as solubility, polarity interaction parameter, we system...

In nature, the biological membrane can selectively transport essential small molecules/ions through facilitated diffusion via carrier proteins. Intrigued by this phenomenon and principle, membrane researchers have successfully employed synthetic carriers and carrier-mediated reversible reactions to enhance the separation performance of synthetic membranes. However, the existing facilitated tran...

Chitosan (CS) and alginate (Alg) are complementary in their membrane performance, but the combination of them is normally difcult to use due to their different solubilities. Layer-by-Layer deposition appears to be an effective method for improving the separation efciency of a composite membrane. In this work, the polyelectrolyte multilayer composite membranes (PEMCMs) wer...

Homogeneous membranes were prepared by blending poly (acrylic acid) with poly (vinyl alcohol). These blend membranes were evaluated for the selective separation of alcohols from toluene by pervaporation. The flux and selectivity of the membranes were determined both as a function of the blend composition and of the feed mixture composition. The results showed that a polymer blending method coul...

Transport of liquids by pervaporation takes place by a solution-diffusion mechanism. In order to investigate the “solution part” of this transport model, preferential sorption has been compared with preferential permeability. Sorption equilibria and pervaporation experiments for the systems water-ethanol-cellulose acetate, water-ethanol-polyacrylonitrile and water-ethanol-polysulfone have been ...