Tubular supported carbon molecular sieve membranes (CMSMs) with high hydrophilicity and perm-selectivities for water suitable ethanol dehydration were developed from a Novolac oligomer phenolic resin as precursor. Alpha alumina CMSMs resulted in 1.69 times higher surface roughness than zirconia supports. The 48% selective layer thickness. According to pervaporation results, permeance decreased ...

Functionalized and reduced graphene oxide nanosheets with octadecylamine (rGOODA) were incorporated in polydimethylsiloxane (PDMS) membranes to be used pervaporation for removal of toluene from water. The properties the functionalized characterized by FTIR, XRD, Raman, SEM, TGA analyses. prepared mixed matrix (MMMs) using contact angle, AFM, SEM-EDX, TGA, solvent uptake tests. contained (rGO) r...

Membrane methods are environmentally friendly and can significantly improve the design development of new energy consumption processes that very important nowadays. However, their effective use requires advanced membrane materials. This study aims to performance pervaporation polyvinyl alcohol (PVA)-based for isopropanol dehydration. To achieve this goal, two were applied: (1) bulk modification...

In this work, polyhedral oligomeric silsesquioxane (POSS) with two different functional groups, octa(nitrophenyl)silsesquioxane (ONPS) and octa(aminophenyl)silsesquioxane (OAPS), was incorporated polydimethylsiloxane (PDMS), forming composite membranes for furfural recovery via pervaporation process. The addition of POSS had enhanced the hydrophobicity PDMS improved affinity membranes. At same ...

Abstract Graphene oxide (GO) membranes have shown great potential in ionic sieving from aqueous solutions. However, it remains challenging for GO to exclude small ions with a large water flux. Herein, organic are confined onto the interlaminations form precisely restricted 2D channel size of 0.71 nm, which presents >99.9% NaCl rejections and high freshwater fluxes via pervaporation method, b...

Modeling of an esterification reaction in a batch pervaporation membrane reactor (PVMR), and an analysis of the PVMR performance under different reaction conditions for different membrane characteristics are presented. Esterification of ethyl alcohol with acetic acid was considered as the model reaction. The PVMR performance for this reaction could be represented by a 2-step series model. The P...