Magnetic Resonance Imaging and Quantitative Analysis of Particle Deposition in Porous Media

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• 作者：Tal Amitay-Rosen ; Andrea Cortis ; and Brian Berkowitz
• 刊名：Environmental Science & Technology
• 出版年：2005
• 出版时间：September 15, 2005
• 年：2005
• 卷：39
• 期：18
• 页码：7208 - 7216
• 全文大小：574K
• 年卷期：v.39,no.18(September 15, 2005)
• ISSN：1520-5851

文摘

Measurements of particle deposition and mobilization inwater-saturated porous columns were performed usingnuclear magnetic resonance imaging (MRI). The use of MRIenabled the acquisition of detailed, noninvasive measurements that quantify spatial and temporal evolution of particletransport patterns and porosity changes due to particledeposition. Measurements indicate that for the consideredparticle sizes and flow conditions significant particledeposition occurs at some distance into the column.Because identification of unique parametrizations forprocesses of particle straining, deposition, and detachmentis complex and nonunique, a simple phenomenologicalmodel of particle deposition and porosity reduction issuggested. This model captures the essential features ofthe experimental measurements on spatial and temporal flowand deposition patterns.