3. Porous membrane separations
3.1 Microfiltration
Separation by microfiltration (MF) concerns particles that are generally non-settleable, but whose size is greater than 0.2 to 0.5 µm. Values differ from one author to another, but in practice, microfiltration membrane separation operations are encountered when clarifying a medium, seeking to remove colloidal and particulate matter, prior to use or post-treatment of the medium (e.g. by chromatography, fermentation, enzymatic reaction or other). Another major application of this technique concerns the ability of microfiltration membranes to retain micro-organisms such as bacteria: the permeate flowing down the low-pressure side of the membrane contains very few bacteria (log reductions of 6 to 8 are observed, depending on the micro-organisms observed, the type of...
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Porous membrane separations
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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