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@INPROCEEDINGS{Brito:874675,
      author       = {Brito, Mariano},
      title        = {{M}ethods for calculating effective interactions and
                      pressure in charge-stabilized dispersions with applications
                      to filtration},
      reportid     = {FZJ-2020-01591},
      year         = {2018},
      abstract     = {Charge-stabilized suspensions have interesting static
                      features, reflected in properties such as the suspension
                      osmotic pressure and ionic microstructure. These properties
                      are determined by electro-steric interactions between all
                      ionic species. Due to the large size asymmetry between
                      colloidal macroions and small microions, the degrees of
                      freedom of the latter can be integrated out, resulting in an
                      effective one-component interaction potential describing
                      microion-dressed colloidal quasi-particles. We present a
                      comparison, and partial extension, of various methods of
                      calculating effective colloidal interaction parameters
                      including effective charges and screening constants as
                      functions of concentration and ionic strength [1]. We
                      discuss osmotic suspension pressure calculations for
                      dispersions in Donnan equilibrium with a salt ion reservoir.
                      Methods are discussed including cell-models, renormalized
                      jellium models, and multi-colloid-centered mean-field
                      models. The pros and cons of the various methods are
                      assessed by comparison with primitive model based computer
                      simulations. As an application to a technologically relevant
                      process, a parameter-free model for cross-flow
                      ultrafiltration is presented [2]. In this process, a dilute
                      charge-stabilized dispersion is concentrated and purefied by
                      continouosly pumping it though an array of cylindrical
                      membranes having nano-sized pores.References[1] M. Brito, J.
                      Riest, A. Denton and G. Nägele, to be submitted (2017).[2]
                      M. Brito, J. Riest, O. Nir, M. Wessling and G. Nägele, work
                      in progress.},
      organization  = {Seminar in Physics Department, North
                       Dakota State University, Fargo, ND
                       (USA)},
      subtyp        = {Invited},
      cin          = {IBI-4},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)31},
      url          = {https://juser.fz-juelich.de/record/874675},
}