Determination of Basic Geometrical Characteristics of Fractured Porous Media by X-Ray Computerized Tomography and Digital Photography

2000 ◽  
Author(s):  
R. Martinez-Angeles ◽  
C. Perez-Rosales
Keyword(s):  
Porous Media ◽  
Computerized Tomography ◽  
Digital Photography ◽  
Fractured Porous Media ◽  
X Ray ◽  
Geometrical Characteristics

X-ray Microtomography Determination of Air−Water Interfacial Area−Water Saturation Relationships in Sandy Porous Media

2008 ◽  
Vol 42 (8) ◽  
pp. 2949-2956 ◽  
Author(s):  
Molly S. Costanza-Robinson ◽  
Katherine H. Harrold ◽  
Ross M. Lieb-Lappen
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Interfacial Area ◽  
X Ray

scholarly journals Transport of Palladium Nanoparticles in Porous Media of Varying Grain Size with Synchrotron X-Ray Computerized Tomography

2020 ◽  
Author(s):  
Emily Saurette ◽  
Adam Lentz ◽  
Stuart Linley ◽  
Frank Gu ◽  
Mark Rivers ◽  
...  
Keyword(s):  
Grain Size ◽  
Porous Media ◽  
Computerized Tomography ◽  
Palladium Nanoparticles ◽  
X Ray

Contaminant migration in unsaturated porous media using X-ray computerized tomography (CT)

2013 ◽  
Vol 69 (5) ◽  
pp. 953-959 ◽  
Author(s):  
Nian Qing Zhou ◽  
Shan Zhao ◽  
Wei Song ◽  
Jun Otani
Keyword(s):  
Porous Media ◽  
Computerized Tomography ◽  
Three Dimensional ◽  
Ct Scanning ◽  
Silica Sand ◽  
Unsaturated Porous Media ◽  
Contaminant Migration ◽  
X Ray ◽  
Before And After ◽  
Unsaturated Zones

Landfills are usually located in unsaturated zones. Contaminant leaking can easily infiltrate groundwater through these porous media and contribute to groundwater pollution. The main objective of this work is to study the leachate migration in unsaturated porous media using X-ray computerized tomography (CT) and image-processing software. Silica sand and Yamazuna sand (collected from Japan) with different particle sizes are considered. Potassium iodide (KI) solution is used as a contaminant and injected into sand specimens at appropriate rates. The specimens are scanned at each cross section before and after contaminant injection by X-ray CT. Subsequently, all CT images are transformed into mean CT values by Image J software. VGStudio software is then used to reconstruct the subtracted images into three-dimensional images. The results indicate that vertical migration is dominant in uniform sand and horizontal migration is the main behavior in well-graded sand. Meanwhile, it is also confirmed that CT scanning is an effective technology to study contaminant migration in unsaturated porous media with different grain sizes.

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