Abstract
Porous glass hollow fibre membranes can be used for the separation of molecular mixtures as well as in microfiltration. In both cases, the degree of retention of a certain particle is mainly determined by the pore size of the membrane; the particular chemical surface modification of the membrane will have an additional influence. In this work, mixtures of dextranes have been used to evaluate the separation capacity of porous glass membranes. Interesting effects can be observed when higher molecular weight dextranes are used. A possible explanation is the flexibility of such large molecules and their deformation in a fluid flow field. Modelling transport through a membrane as a motion of a sphere (the diameter of which is the Stokes’ diameter) through a cylindrical pore, the retention of dextranes and of proteins can be described by the same theory.
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© 1991 Elsevier Science Publishers Ltd, England
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Langer, P., Breitenbach, S., Schnabel, R. (1991). Separation Techniques with Porous Glass Membranes: A Comparison of Dextrane and Protein Separations. In: Turner, M.K. (eds) Effective Industrial Membrane Processes: Benefits and Opportunities. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3682-2_19
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DOI: https://doi.org/10.1007/978-94-011-3682-2_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-723-9
Online ISBN: 978-94-011-3682-2
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