Averaged Boltzmann’s Kinetics for Colloidal Transport in Porous Media

Abstract

During suspension flows through porous media, interaction of particles with the rock matrix leads to particle immobilization. The capture of suspended particles leads to both a decrease in the suspended concentration, and a change in the rock properties by an alteration of the effective rock matrix. Both of these effects have granted particulate flows in porous media significant academic and industrial interest. Particle flow and capture is prevalent in a number of industries. For example, some researchers in contaminant hydrology have noticed the impact that migrating clays can have on the retention and thus stabilization of contaminants in soils (

The Comparison of Seven Models to Simulate the Transport and Deposition of Polydisperse Particles under Favorable Conditions in a Saturated Medium

“…The transport processes of these dispersed particles through a porous medium and how they interact with the porous medium are governed by several different forces and transport mechanisms depending on the particle density and size [11]. These transport mechanisms mainly include Brownian motion, gravity, interception, attachment to media via attractive electrostatic forces, straining (pore throats are too small for particles to pass), bridging, and trapping in dead-end pore throats [12]. The retention of particles larger than 10 µm is mainly accomplished by gravity, interception, and hydrodynamics, while Brownian motion is the most-prevalent transport mechanism for small colloids (<1 µm).…”