4. Dense membrane separation
4.1 Pervaporation
Pervaporation is a membrane separation operation in which a liquid mixture is partially fractionated by "evaporation" of a fraction of the mixture through a dense (non-porous) membrane. There is thus a phase change, and the permeate is recovered in an initial vapor form. The driving force is a difference in activity, obtained mainly by a difference in pressure, usually by creating a partial vacuum in the permeate compartment of the membrane.
The industrial applications of pervaporation are not as numerous as those of ultrafiltration or electrodialysis, although its potential is high in the agri-food sector (e.g. flavor extraction, analytical applications (electronic nose) or bioreactors). Pervaporation can usefully be coupled with distillation...
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Dense membrane separation
Economic data
Data supplied by
me
Sandrine Desclaux (Laboratoire de Génie chimique - Université Paul-Sabatier de Toulouse), extracts published in the article
-
Prices for organic reverse osmosis...
Bibliography
In Engineering Techniques
Standardization
Association française de normalisation AFNOR
- Filtration des liquides. Membranes poreuses. Taux de rétention des membranes d'ultrafiltration et de nanofiltration. - NF X 45-103 - 12-1997
- Cartouches filtrantes. Méthodes d'essais. Détermination de la pression différentielle en fonction du débit. - NF X 45-302 - 09-2000
- Cartouches filtrantes. Méthodes d'essais. Détermination de l'efficacité de filtration...
Membrane manufacturers and suppliers
(non-exhaustive list)
Alfa Laval Separation A/S (membrane plane (DSS) nanofiltration, ultrafiltration, microfiltration, équipement microfiltration, ultrafiltration)
Amafilter BV The Netherlands (équipement microfiltration)
Atech innovations GmbH (ultrafiltration, microfiltration)
Axium Process Ltd UK...
Organizations
(list provided by
me
Sandrine Desclaux and published in the
Learned societies
Club Français des Membranes (CFM) http://www.cfm-membrane.com
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