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Membrane Water Treatment
  Volume 1, Number 2, April 2010 , pages 139-158
DOI: https://doi.org/10.12989/mwt.2010.1.2.139
 


Nanofiltration of multi-ionic solutions: prediction of ions transport using the SEDE model
A.I. Cavaco Morao, A. Szymczyk, P. Fievet and A.M. Brites Alves

 
Abstract
    This work focuses on the application of nanofiltration (NF) to the concentration of a pharmaceutical product, Clavulanate (CA−), from clarified fermentation broths, which show a complex composition with six main identified ions (K+, Cl−, NH4 +, H2PO4 −, SO4 2− and CA−), glucose and glycerol. The solutes transport through the NF membrane pores was investigated using the SEDE (Steric, Electric and Dielectric Exclusion) model. This model was applied to predict the rejection rates of the initial feed solution and the final concentrated solution (10-fold concentrated solution). The best results were achieved with a single fitted parameter,
 
Key Words
    nanofiltration; multi-ionic solutions; transport model; membrane charge; concentration polarization.
 
Address
A.I. Cavaco Morao; 1nstituto Superior Tecnico, Department of Chemical and Biological Engineering, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
A. Szymczyk; Universite Europeenne de Bretagne, France
Universite de Rennes 1, CNRS, Laboratoire des Sciences Chimiques de Rennes, UMR 6226 CNRS/UR1/ENSCR, Chimie et Ingenierie des Procedes, 263 Av. du General Leclerc,
Bat. 10 A, CS 74205, F-35042 Rennes, France
P. Fievet; Institut UTINAM, UMR CNRS 6213, Universite de Franche-Comte, 16 route de Gray,Besancon Cedex 25030, France
A.M. Brites Alves; 1nstituto Superior Tecnico, Department of Chemical and Biological Engineering, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
 

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