Transport and deposition of suspended particles in saturated porous media: effect of hydrodynamic forces and pore structure

摘要: In order to investigate the effects of pore structure and hydrodynamic forces on particle transport deposition, an experimental study deposition suspended particles (SP) in saturated porous medium (quartz sand glass beads) was conducted under five different flow velocities at room temperature (22–25 °C). Silt with a mode 10.7 μm diameter fluorescein (as dissolved tracer (DT)) were injected into columns short pulses. The SP transfer parameters compared DT one. All (dispersivity, recovery rate, rate) obtained from breakthrough data varied rate. curves well described by analytical solution advective–dispersive equation first-order kinetic. results showed that faster than when velocity reached critical value which between beads quartz observed. mean recovered longitudinal dispersivity increase rate; addition, rate is higher even if similar porosities. This highlights significance processes SP.