DSP&DE Model Applications
The applications of the Donnan/steric pore (DSP) and dielectric exclusion (DE) model (known as the SEDE model in literature) can be summarized as follows:
- (i)
To characterize a nanofiltration (NF) membrane in terms of the average pore radius (rp); the effective membrane thickness (δ); the volume charge density (X), which is defined as the number of moles of fixed charges per unit of pore volume; the dielectric constant of the solution inside pores (εp); and the dielectric constant of the membrane material (εm)
Characterization using uncharged solutes:
rp and δ are usually determined by the analysis of rejection data of neutral solutes (Bowen et al. 1997; Schaep et al. 1999; Labbez et al. 2002) since in that case the rejection only depends on structural parameters. Estimation of rp and δ with various uncharged solutes shows that the variation in rp for best fit is relatively small. Hence, a mean value of rpcan be considered. However, it is reported that the...
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References
Bandini S, Vezzani D (2003) Nanofiltration modeling: the role of dielectric exclusion in membrane characterization. Chem Eng Sci 58:3303–3326
Bouranene S, Fievet P, Szymczyk A (2009) Investigating nanofiltration of multi-ionic solutions using the steric, electric and dielectric exclusion model. Chem Eng Sci 64:3789–3798
Bowen WR, Welfoot JS (2002) Modelling the performance of membrane nanofiltration – critical assessment and model development. Chem Eng Sci 57:1121–1137
Bowen WR, Mohammad AW, Hilal N (1997) Characterization of nanofiltration membranes for predictive purposes – use of salts, uncharged solutes and atomic force microscopy. J Membr Sci 126:91–105
Cavaco Morão AI, Szymczyk A, Fievet P, Brites Alves AM (2008) Modelling the separation by nanofiltration of a multi-ionic solution relevant to an industrial process. J Membr Sci 322:320–330
Escoda A, Déon S, Fievet P (2011) Assessment of dielectric contribution in the modeling of multi-ionic transport through nanofiltration membranes. J Membr Sci 378:214–223
Escoda A, Bouranene S, Fievet P, Déon S, Szymczyk A (2013) Dehydration and pore swelling effects on the transfer of PEG through NF membranes. Membr Water Treat 4(2):127–142
Kunz W, Henle J, Ninham BW (2004) Zur Lehre von der Wirkung der Salze (about the science of the effect of salts): Franz Hofmeister’s historical papers. Curr Opin Colloid Interface Sci 9(1–2):19–37
Labbez C, Fievet P, Szymczyk A, Vidonne A, Foissy A, Pagetti J (2002) Analysis of the salt retention of a titania membrane using the “DSPM” model: effect of pH, salt concentration and nature. J Membr Sci 208:315–329
Lefebvre X (2003) Etude des modèles de transfert en Nanofiltration. Application du modèle hybride basé sur les équations de Nernst-–Planck étendues par le développement du logiciel de simulation Nanoflux. Thesis, University of Montpellier II, France (in French)
Lefebvre X, Palmeri J, David P (2004) Nanofiltration theory: an analytic approach for single salts. J Phys Chem B 108:16811–16824
Schaep J, Vandecasteele C, Mohammad AW, Bowen WR (1999) Analysis of the salt retention of nanofiltration membranes using the Donnan-Steric partitioning pore model. Sep Sci Technol 34(15):3009–3030
Szymczyk A, Fievet P (2005) Investigating transport properties of nanofiltration membranes by means of a steric, electric and dielectric exclusion model. J Membr Sci 252:77–88
Szymczyk A, Sbai M, Fievet P, Vidonne A (2006) Transport properties and electrokinetic characterization of an amphoteric nanofilter. Langmuir 22:3910–3919
Szymczyk A, Fatin-Rouge N, Fievet P, Ramseyer C, Vidonne A (2007) Identification of dielectric effects in nanofiltration of metallic salts. J Membr Sci 287:102–110
Vezzani D, Bandini S (2002) Donnan equilibrium and dielectric exclusion for characterization of nanofiltration membranes. Desalination 149:477–483
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Fievet, P. (2016). DSP&DE Model Applications. In: Drioli, E., Giorno, L. (eds) Encyclopedia of Membranes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44324-8_1719
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