Encyclopedia of Membranes

2016 Edition
| Editors: Enrico Drioli, Lidietta Giorno

Fixed Carrier Membrane

Reference work entry
DOI: https://doi.org/10.1007/978-3-662-44324-8_229

Fixed (site) carrier membranes (FSC) combine the durability of a dense membrane with the selectivity of a supported liquid membrane (SLM) overcoming the limitation of SLM, degradation due to the wash out of the carrier solution over time. The carrier is either covalently bonded to the polymer chain (chained carrier) or immobilized in the polymer matrix by physical constraints or weaker ionic bonding. A fixed carrier membrane will separate mainly via facilitated transport mechanism, implying that the carrier will react specifically with one of the components to be separated.

Noble (1990, 1991) and Cussler (Cussler et al. 1989) developed two different models to describe the transport across fixed carrier membranes. E. L. Cussler explained the transport by “chained carrier” theory, when carriers are covalently bonded, requiring a certain mobility of polymeric chains and that a percolation threshold appears when two chained carriers are too far apart.

R. Noble described the transport of...

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  1. Barrer RM (1984) Diffusivities in glassy polymers for the dual mode sorption model. J Membr Sci 18:25CrossRefGoogle Scholar
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  4. Noble RD (1991) Analysis of ion transport with fixed site carrier membranes. J Membr Sci 56:229–234CrossRefGoogle Scholar

Further Reading

  1. Baker RW (2004) Membrane technology and applications. McGraw- Hill, New YorkCrossRefGoogle Scholar
  2. Mulder M (2003) Basic principle of membrane technology. Kluwer, LondonGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Polymer Particles and Surface Chemistry, Materials and ChemistrySINTEFTrondheimNorway