Wednesday, September 16, 2015

Pervaporation for desalinization


Pervaporation (or pervaporative separation) is a processing method for the separation of mixtures of liquids by partial vaporization through a non-porous or porous membrane.

Helmy El-Zanfaly, a professor of water contamination at Egypt’s National Research Centre
Developed by a team of researchers at Alexandria University in Egypt, the procedure uses a desalination technique called pervaporation to remove the salt from sea water and make it drinkable. Specially made synthetic membranes are used to filter out large salt particles and impurities so they can be evaporated away, and then the rest is heated up, vapourised, and condensed back into clean water.

New technology converts sea water into drinking water in minutes

Desalination of simulated seawater by purge-air pervaporation using an innovative fabricated membrane