Laboratory Assessment of Nano‐Silver Transport in Sand Columns Using Complex Conductivity Measurements

2010 ◽  
Author(s):  
Dalton Hawkins ◽  
Matt McGuire ◽  
Gamal Z. Abdel Aal ◽  
Estella A. Atekwana ◽  
Dale D. Werkema
Keyword(s):  
Complex Conductivity ◽  
Conductivity Measurements ◽  
Laboratory Assessment ◽  
Nano Silver

Laboratory Assessment Of Nano-Silver Transport In Sand Columns Using Complex Conductivity Measurements

2010 ◽  
Author(s):  
Dalton Hawkins ◽  
Matt McGuire ◽  
Gamal Z. Abdel Aal ◽  
Estella A. Atekwana ◽  
Dale D. Werkema
Keyword(s):  
Complex Conductivity ◽  
Conductivity Measurements ◽  
Laboratory Assessment ◽  
Nano Silver

scholarly journals On Permeability Prediction From Complex Conductivity Measurements Using Polarization Magnitude and Relaxation Time

2018 ◽  
Vol 54 (5) ◽  
pp. 3436-3452 ◽  
Author(s):  
Judith Robinson ◽  
Lee Slater ◽  
Andreas Weller ◽  
Kristina Keating ◽  
Tonian Robinson ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Complex Conductivity ◽  
Conductivity Measurements ◽  
Permeability Prediction

Low frequency complex conductivity measurements of microcrack properties

1995 ◽  
Vol 16 (1) ◽  
pp. 121-135 ◽  
Author(s):  
Frank D. B�rner ◽  
J�rgen H. Sch�n
Keyword(s):  
Low Frequency ◽  
Complex Conductivity ◽  
Conductivity Measurements

Millimeter-wave complex-conductivity measurements of Bi-Ca-Sr-Cu-O superconducting thin films

1988 ◽  
Vol 38 (10) ◽  
pp. 7029-7032 ◽  
Author(s):  
W. Ho ◽  
P. J. Hood ◽  
W. F. Hall ◽  
P. Kobrin ◽  
A. B. Harker ◽  
...  
Keyword(s):  
Thin Films ◽  
Millimeter Wave ◽  
Complex Conductivity ◽  
Superconducting Thin Films ◽  
Conductivity Measurements ◽  
Wave Complex

scholarly journals Relationship between superconductivity and nematicity in FeSe1−xTex (x=0−0.5) films studied by complex conductivity measurements

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Hodaka Kurokawa ◽  
Sota Nakamura ◽  
Jiahui Zhao ◽  
Naoki Shikama ◽  
Yuki Sakishita ◽  
...  
Keyword(s):  
Complex Conductivity ◽  
Conductivity Measurements

Petrophysical properties of saprolites from the Oak Ridge Integrated Field Research Challenge site, Tennessee

Geophysics ◽  
2013 ◽  
Vol 78 (1) ◽  
pp. D21-D40 ◽  
Author(s):  
André Revil ◽  
Magnus Skold ◽  
Susan S. Hubbard ◽  
Yuxin Wu ◽  
David B. Watson ◽  
...  
Keyword(s):  
Field Research ◽  
Surface Conductivity ◽  
Complex Conductivity ◽  
Fluid Composition ◽  
Excess Charge ◽  
Petrophysical Properties ◽  
Conductivity Measurements ◽  
Oak Ridge ◽  
Core Samples ◽  
Research Challenge

At the Oak Ridge Integrated Field Research Challenge site, near Oak Ridge, Tennessee, the shallow saprolitic aquifer is contaminated by nitric acid, uranium, and metals originating from the former S3 settling ponds. To interpret low-frequency geophysical methods used to image contaminant plumes, we have characterized the petrophysical properties of three representative saprolite core samples. Their hydraulic conductivity ranges from [Formula: see text] to [Formula: see text] in agreement with field data. Complex conductivity measurements, in the frequency range of 1 mHz to 45 kHz, were performed with NaCl solutions with electrical conductivities in the range [Formula: see text] to [Formula: see text], a range representative of field conditions. The electrical conductivity data were well reproduced with a simple linear conductivity model between the saprolite conductivity and the pore water conductivity. The conductivity plots were used to estimate the formation factor (the cementation exponent was about [Formula: see text]) and the surface conductivity ([Formula: see text]). The magnitude of the surface conductivity depended on the degree of weathering and therefore on the amount of smectite and mixed layer (illite-smectite) clays present in the saprolite. The chargeability of the core samples was in the range of [Formula: see text] and is strongly dependent on the salinity. We also performed streaming potential measurements with the same pore fluid composition as that used for the complex conductivity measurements. We found an excess of movable electrical charges on the order of 100 to [Formula: see text] in agreement with previous investigations connecting the movable excess charge density to permeability. The zeta potential was in the range of [Formula: see text] to [Formula: see text] independent on the salinity. The electrical measurements were consistent with an average cation exchange capacity in the range of 1.4 to [Formula: see text] and a specific surface area on the order of 4000 to about 30,000 [Formula: see text].

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