Magnetic resonance imaging and quantitative analysis of particle deposition in porous media.
Measurements of particle deposition and mobilization in water-saturated porous columns were performed using nuclear magnetic resonance imaging (MRI). The use of MRI enabled the acquisition of detailed, noninvasive measurements that quantify spatial and temporal evolution of particle transport patterns and porosity changes due to particle deposition. Measurements indicate that for the considered particle sizes and flow conditions significant particle deposition occurs at some distance into the column. Because identification of unique parametrizations for processes of particle straining, deposition, and detachment is complex and nonunique, a simple phenomenological model of particle deposition and porosity reduction is suggested. This model captures the essential features of the experimental measurements on spatial and temporal flow and deposition patterns.
Amitay-Rosen
Tal
T
Department of Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel.
Cortis
Andrea
A
Berkowitz
Brian
B
D004574:Electromagnetic Fields; D004784:Environmental Monitoring / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D015233:Models, Statistical; D008962:Models, Theoretical; D009991:Oscillometry; D010316:Particle Size; D016062:Porosity; D013997:Time Factors; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis
D014873:Water Pollutants