In this article, the pervaporation selectivity as a function of the membrane thickness is studied for the dehydration of acetic acid. From this study, it appeared that the selectivity of polysulfone (PSF) , poly (vinyl chloride) (PVC ) , and polyacrylonitrile (PAN) decreases with decreasing membrane thickness, below a limiting value of about 15 pm. However, in the case of gas separation, the se...

As a new family of two-dimensional (2D) materials, MXene, with many attractive physicochemical properties, has attracted increasing attentions and been applied for various applications. Here, for the first time, ultrathin MXene membranes with thickness down to several tens of nanometers were developed for pervaporation desalination by stacking synthesized atomic-thin MXene nanosheets. Influence...

Article history: Received 14 December 2016 Received in revised form 12 May 2017 Accepted 14 May 2017 Available online 1 July 2017 Alcohol-permselectivity pervaporation has been arousing increasingly more attention in bioalcohol production due to the advantages of environmental friendliness, low energy consumption and easy coupling with fermentation process. With the intrinsic feature of larger ...

The ethanol fermentation process using beet molasses as the feedstock has been studied. The fermentation process, which was coupled with a membrane separation unit (Pervaporation), was compared to a conventional batch process. Ethanol was produced by Saccharomyces cerevisiae ATCC 9763 and recovered by pervaporation system using a composite polydimethylsiloxane (PDMS) membrane with 10 μm thickne...

Let’s commemorate the 100th anniversary of “pervaporation” by committing ourselves to position it as it deserves. Dear editor, this Submission is a letter to the Editor, and thus, a abstract does not apply.Therefore, this section will be used as a space for my comment or suggestion because it is needed for the next step. When we submit a letter to the editor,...

By using binary ethanol/water mixtures, the separation performance of two improved commercial pervaporation embranes (PERVAPTM) are presented. Separation performance data are analyzed and compared as a function of operating conditions. The effect of initial feed concentration on the separation performance and the effect of feed concentration on apparent activation energy are presented. For memb...

Ethanol-water concentration profiles in cellulose acetate membranes were measured under steady-state pervaporation conditions. Knowledge of these profiles leads to a better understanding of the diffusion process during pervaporation. The concentration profiles were determined by a film-stack method, using three to six layers. It is shown that permeation of ethanol-water mixtures proceeds in a c...

In this work, poly (ether-block-amide) (PEBA)/ceramic hollow fiber (HF) composite membranes with high flux were prepared by dip-coating the ceramic hollow fiber with PEBA polymer solution for pervaporation (PV). The membrane fabrication was optimized by finely tailoring the coating parameters such as the viscosity and concentration of PEBA coating solution, which made the pervaporation flux as ...