Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
638059 | Journal of Membrane Science | 2008 | 6 Pages |
Abstract
Active membranes prepared by covalent attachment of Candida antarctica lipase B (CALB) onto a ceramic support previously coated by polymers (gelatine/polyethyleneimine PEI) were tested in a membrane reactor under different hydrodynamic conditions (Reynolds number and transmembrane pressure) for the synthesis of butyl laurate in hexane. The ester production was found to be directly related to the permeation flux across the membrane. However, the permeate flux unexpectedly decreased when the Reynolds number values increased. Scanning electron microscopy (SEM) and mercury porosimetry showed that this phenomenon is related to morphological changes which occurred in the polymer layer when the tangential velocity varied.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Tània Gumí, Joaquin Fernandez-Delgado Albacete, Delphine Paolucci-Jeanjean, Marie-Pierre Belleville, Gilbert M. Rios,