Etude Experimentale Du Transport De Particules En Suspensions Et Du Traceur Dissout (fluoresceine) Dans Un Milieu Poreux Sature
Year: 2016
Type: article
Abstract: In this article, we presented the results of an experimental study of transport and deposition of silt suspended particles (modal diameter 7 μm) in a laboratory column filled with gravel. The tracer tests are performed at different velocities by continuous injections of suspended particles and of dissolved tracer. The hydro-dispersive parameters are determined from the experimental calibration curves by the analytical solution for a continuous injection of the convection-dispersion equation with the deposition kinetics of first order. The results show that the restitution of particles and deposition kinetics, increase with the flow velocity. The kinetics of deposit increases with speed and follows a power law. The retention decreases with flow velocity. The dispersion of the particles is slightly higher than that of the dissolved tracer; it increases with the pore velocity in a non-linear way. The analysis of the size distribution of restituted particles by the laser granulometer showed that the larger particles arrive first and then the fine for all tested speeds. The restituted particles size increases with speed. The suspended particles are carried with a delay relative to the dissolved tracer.
Source: Larhyss journal
Language: English
Subfield: Environmental Engineering
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2566189143