Streaming Potential Revisited: The Influence of Convection on the Surface Conductivity

Langmuir ◽  
2014 ◽  
Vol 30 (36) ◽  
pp. 10950-10961 ◽  
Author(s):  
Rakesh Saini ◽  
Abhinandan Garg ◽  
Dominik P. J. Barz
Keyword(s):  
Streaming Potential ◽  
Surface Conductivity

The Determination of Electrokinetic Coupling-Coefficient and Zeta Potential of Rock Samples by Electrokinetic Measurements

2012 ◽  
Vol 516-517 ◽  
pp. 1870-1873 ◽  
Author(s):  
Jun Wang ◽  
Heng Shan Hu
Keyword(s):  
Zeta Potential ◽  
Coupling Coefficient ◽  
Streaming Potential ◽  
Potential Method ◽  
Surface Conductivity ◽  
Reliable Estimate ◽  
Surface Conductance ◽  
Streaming Current ◽  
Low Concentrations

The electrokinetic effects are important in the understanding of electric properties in porous medium. In this study, the streaming potential and streaming current of saturated samples are measured at different concentrations, then three methods are applied to obtain the zeta-potential and electrokinetic coupling coefficient. The study shows that the results obtained from streaming potential and streaming current methods agree well with each other, but the results obtained from simplified streaming potential method become seriously inaccurate at low concentrations due to the influence of surface conductance. This experimental study also provides a reliable estimate of the surface conductivity and its contribution to zeta-potential at given concentrations.

Surface Conductivity and the Streaming Potential near a Rotating Disk-Shaped Sample

Langmuir ◽  
2013 ◽  
Vol 29 (44) ◽  
pp. 13427-13432 ◽  
Author(s):  
Paul J. Sides ◽  
Dennis C. Prieve
Keyword(s):  
Streaming Potential ◽  
Rotating Disk ◽  
Surface Conductivity

How to use alum with cationic dispersed rosin size

TAPPI Journal ◽  
2016 ◽  
Vol 15 (5) ◽  
pp. 331-335 ◽  
Author(s):  
LEBO XU ◽  
JEREMY MYERS ◽  
PETER HART
Keyword(s):  
Zeta Potential ◽  
Colloidal Particles ◽  
Streaming Potential ◽  
Excessive Amount ◽  
Paper Machine ◽  
Optimum Amount ◽  
Potential Measurement ◽  
Streaming Current ◽  
Wide Range ◽  
Laboratory Results

Retention of cationic dispersed rosin size was studied via turbidity measurements on stock filtrate with different alum and dispersed rosin size dosages. Stock charge characteristics were analyzed using both an analysis of charge demand determined via a streaming current detector and an evaluation of zeta potential of the fibers by streaming potential measurement. The results indicated that an optimum amount of alum existed such that good sizing retention was maintained throughout a wide range of dispersed rosin size dosages. However, when an excessive amount of alum was used and fines and colloidal particles were transitioned from anionic to cationic, the cationic size retention was reduced. Laboratory results were confirmed with a paper machine trial. All data suggested that a stock charge study was necessary to identify optimal alum dosage for a cationic dispersed rosin sizing program.

Surface Conductivity of the Ytterbium-Doped Topological Kondo-Insulator SmB6

2020 ◽  
Vol 65 (7) ◽  
pp. 233-237
Author(s):  
S. V. Demishev ◽  
M. A. Anisimov ◽  
V. V. Voronov ◽  
M. I. Gilmanov ◽  
V. V. Glushkov ◽  
...  
Keyword(s):  
Surface Conductivity ◽  
Kondo Insulator
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