Pervaporation

Desalination via pervaporation has the potential to be an efficient way of getting fresh water from non-potable saline sources with the advantages of a high rejection of salt and the capability of coping with high-salinity solutions. This overview of desalination via pervaporation mainly focuses on m

• Very thin poly(vinyl alcohol) membranes supported on polysulfone hollow fiber • A controlled coating method for top membrane layer of uniform thickness • Composite hollow fiber membranes having top-layer-thickness of 0.1–1 μm • Best membrane performance so far in pervaporation desalination of saline

Pervaporation separation properties of water Á butan-1-ol binary mixtures were measured with the use of three supported liquid membranes at 378C, namely PDMS, 1-ethenyl-3-ethyl-imidazolium hexafluorophosphate Á PDMS, and tetrapropyl-ammonium tetracyanoborate Á PDMS membranes. An ultrafiltration cera

As polyacrylonitrile (PAN)-based membrane plays an important role in the processes of pervaporation, bioproduct purification and water treatment, this study aims at better understanding the hydrolysis differences by using different alkaline species, and how the hydrolysis degree affect the subsequen

In this paper a general review on different membrane processes and membrane reactors was done. As the main aim of this paper is to review the application of membrane processes in petrochemical industry, processes such as olefin/paraffin separation, light solvent separation, solvent dewaxing, phenol

Silicalite-1 membrane synthesized on the inside of a porous stainless steel tube was used for pervaporation of trichloromethane, 1,1,2-trichloroethane and trichloroethylene from their aqueous solutions. Fluxes of trichloromethane, 1,1,2-trichloroethane and trichloroethylene were observed to be 3.0~3

To explore the novel pervaporation materials, the membranes of hyperbranched polyglycidol (HPG) and hyperbranched poly (amine-ester) (HPAE) were prepared by crosslinking terminal hydroxyl groups with 4,4’-oxydiphthalic anhydride (ODPA) and glutaraldehyde (GA), respectively. Scanning electron microsc

Fermentation of AFEX-treated and enzymatically hydrolyzed forages and agricultural residues resulted in weak ethanol concentration in broths (maximum 5 g/L). A porous ethanol-selective membrane was evaluated on a model solution (2 wt/wt% ethanol) using pervaporation process. When used under permeate

In this paper the enzymatic manufacture of glycerol monostearate was studied in high polar organic solvents. Water produced during the reaction has a disadvantageous effect on the reaction rate and enzyme activity. This byproduct water was removed and the water content was kept constant using a perv

The effectiveness of soil remediation process, consisting of the soil washing, microfiltration and pervaporation process to remove iso-octane (VOC) was investigated. The several different parameters influencing the washing process were investigated: type of the soil (sand and sandy clay), time of th