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@INPROCEEDINGS{Poonoosamy:864730,
      author       = {Poonoosamy, Jenna and Mahrous, Mohamed and Curti, Enzo and
                      Churakov, Sergey and Klinkenberg, Martina and Bosbach, Dirk
                      and Prasianakis, Nikolaos},
      title        = {{A} {M}icrofluidic {E}xperiment and {P}ore {S}cale
                      {M}odelling for {A}ssessing {M}ineral {P}recipitation and
                      {D}issolution in {C}onfined {S}paces},
      reportid     = {FZJ-2019-04401},
      year         = {2019},
      abstract     = {The precipitation and dissolution of minerals in porous
                      media are important processes in geological and technical
                      settings. Such reactions can alter the porosity,
                      permeability, and other physical characteristics of the rock
                      matrix that can affect solute transport. In order to bridge
                      atomistic and macroscopic scales, it is necessary to
                      understand the processes and subsequently to upscale the
                      pore-scale results to macroscopic simulation codes. In this
                      direction, we developed a methodology combining a
                      sophisticated microfluidic experimental setup and
                      cross-scale modelling numerical diagnostics. This allows
                      exploring the processes of mass transport coupled to
                      nucleation, mineral precipitation and dissolution in
                      confined spaces. A system with relatively few chemical
                      species, but with well-defined kinetic parameters was chosen
                      to establish a "proof of concept". The pore scale modelling
                      of the processes inside the microfluidic reactor was based
                      on the Lattice Boltzmann method and was used to spatially
                      resolve the solution composition not accessible
                      experimentally,to calculate the local saturation indices
                      using full speciation, and to predict the induction time for
                      the nucleation process. The information gained from the
                      cross-scale pore-level model helped to gain insights into
                      the underlying precipitation mechanisms and to explain the
                      preferential growth direction of the crystals during the
                      experiment.},
      month         = {Aug},
      date          = {2019-08-18},
      organization  = {Goldschmidt 2019, Barcelona (Spain),
                       18 Aug 2019 - 23 Aug 2019},
      subtyp        = {Other},
      cin          = {IEK-6},
      cid          = {I:(DE-Juel1)IEK-6-20101013},
      pnm          = {161 - Nuclear Waste Management (POF3-161)},
      pid          = {G:(DE-HGF)POF3-161},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/864730},
}