Transport and deposition of particles onto homogeneous and chemically heterogeneous porous media geometries

• Author / Creator

  Chatterjee, Reeshav

• Particle transport and deposition in porous media are central to a wide gamut of natural and engineering processes. In order to establish optimal macroscopic performance, it is essential to understand the microscopic colloid transport fundamentals that ultimately manifest at the macroscopic scale. The present body of work intends to provide an insight into the fundamentals of particle transport and deposition onto ideal porous media geometries. An Eulerian model, was developed to evaluate particle deposition rates onto homogeneous and heterogeneous surfaces of two model geometries-a spherical
  collector and a cylindrical microchannel. For a homogeneous spherical collector, in the absence of Electrostatic Double Layer interactions, the correctness of the Levich solution was established for Brownian particle deposition. Further, it was shown that surface chemical heterogeneity can be effectively tuned to design novel fluidized bed filters. Surface heterogeneity in cylindrical channels was identified as an effective tool in drug targeting and controlling analyte/biomolecule transport in micro
  fluidic devices.

• Subjects / Keywords

  • Eulerian analysis
  • Convection-diffusion-migration equation
  • Particle deposition
  • Patterned heterogeneity

• Graduation date

  Fall 2011

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3PT23

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.