Originally published 13 November 2014 on IHS Engineering360.
Membrane technology like pervaporation (PV) and membrane filtration has been getting a lot of attention in the industry because of its energy efficiency and ability to break azeotropic systems.
The principle behind this technology is simple: the membrane behaves like a fixed filter that will allow water to pass through, while it catches suspended solids and other materials. Membranes are manufactured in a variety of configurations, such as hollow fiber, spiral, and tubular shapes. Each configuration offers a different degree of separation depending on the membrane process and the mixture to be separated.
PV in particular has been the only membrane process largely utilized for chemical purification over the last few decades with application in three primary areas: organophilic separation, removal of organic compounds from a dilute solution like water and dehydration of aqueous mixtures.
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IHS Engineering360, November 2014.