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@INPROCEEDINGS{Roa:187763,
      author       = {Roa, Rafael and Zholkovskiy, Emiliy K. and Naegele,
                      Gerhard},
      title        = {{F}iltration of soft particles suspensions},
      reportid     = {FZJ-2015-01345},
      year         = {2014},
      abstract     = {Membrane filtration is a pressure driven process useful for
                      the separation of macrosolutes, colloids or nanoparticles
                      from a solvent or smaller solutes. This process is of high
                      importance for the concentration of protein or microgel
                      suspensions. In these systems, concentration po- larization
                      determines the permeate flux (Fig. 1). Concentration
                      polarization is the build-up of solute at the membrane
                      surface due to convective-diffusive transport of solute in
                      the boundary layer. The efficiency of the separation process
                      is thus strongly dependent on the hydrodynam- ic conditions,
                      membrane porosity and colloidal interactions.We present a
                      macroscopic model for cross-flow filtration, where the
                      suspension is flowing tangentially over the membrane
                      surface. We study filtration of suspensions of impermeable
                      hard spheres, and of neutral and charged permeable
                      particles. The influence of the nature of the particles is
                      reflected through the transport properties of the
                      suspension, such as the con- centration-dependent diffusion
                      coefficient and the viscosity. These two transport
                      properties are calculated using a variant of mode-coupling
                      theory where hydrodynamic interactions be- tween the
                      particles are accounted for [1]. These results are compared
                      with approximate spher- ical cell model calculations, where
                      multi-particle interactions are modelled by imposing spe-
                      cial boundary conditions on the outer cell boundary [2]. We
                      analyze the efficiency of the fil- tration process by
                      studying the concentration polarization layer and the
                      permeate flux at dif- ferent operating conditions (applied
                      pressure and shear rate).References1. G. Nägele, M. Heinen,
                      A.J. Banchio, C. Contreras-Aburto, EPJ ST 2013, 222, 28552.
                      E.K. Zholkovskiy, V.N. Shilov, J.H. Masliyah, M.P.
                      Bondarenko, CJChE 2007, 85, 701},
      month         = {May},
      date          = {2014-05-20},
      organization  = {1th International Symposium on
                       Electrokinetic Phenomena, Ghent
                       (Belgium), 20 May 2014 - 23 May 2014},
      subtyp        = {After Call},
      cin          = {ICS-3},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451)},
      pid          = {G:(DE-HGF)POF2-451},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/187763},
}