Staff View: Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity

Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity

We report experimental measurements of the streaming potential coupling coefficient in sandstones saturated with NaCl-dominated artificial and natural brines up to 5.5 M (321.4 g L−1 of NaCl; electrical conductivity of 23 S m−1). We find that the magnitude of the coupling coefficient decreases with...

Full description

Saved in:

Bibliographic Details
Main Authors:	Jaafar, Mohd. Zaidi, Vinogradov, J., Jackson, M. D.
Format:	Article
Published:	American Geophysical Union 2010
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/26293/ https://dx.doi.org/10.1029/2010JB007593
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.utm.26293
record_format	eprints
spelling	my.utm.262932018-10-31T12:28:07Z http://eprints.utm.my/id/eprint/26293/ Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity Jaafar, Mohd. Zaidi Vinogradov, J. Jackson, M. D. T Technology (General) We report experimental measurements of the streaming potential coupling coefficient in sandstones saturated with NaCl-dominated artificial and natural brines up to 5.5 M (321.4 g L−1 of NaCl; electrical conductivity of 23 S m−1). We find that the magnitude of the coupling coefficient decreases with increasing brine salinity, as observed in previous experimental studies and predicted by models of the electrical double layer. However, the magnitude of the coupling coefficient remains greater than zero up to the saturated brine salinity. The magnitude of the zeta potential we interpret from our measurements also decreases with increasing brine salinity in the low-salinity domain (<0.4 M; 23.4 g L−1 of NaCl and 3.4 S m−1) but reaches a constant value at higher salinity (>0.4 M). We hypothesize that the constant value of zeta potential observed at high salinity reflects the maximum packing of counterions in the diffuse part of the electrical double layer. Our hypothesis predicts that the zeta potential becomes independent of brine salinity when the diffuse layer thickness is similar to the diameter of the hydrated counterion. This prediction is confirmed by our experimental data and also by published measurements on alumina in KCl brine. At high salinity (>0.4 M), values of the streaming potential coupling coefficient and the corresponding zeta potential are the same within experimental error regardless of sample mineralogy and texture and the composition of the brine. American Geophysical Union 2010 Article PeerReviewed Jaafar, Mohd. Zaidi and Vinogradov, J. and Jackson, M. D. (2010) Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity. Journal of Geophysical Research, 115 (812204). 1 - 18. ISSN 0148-0227 https://dx.doi.org/10.1029/2010JB007593 DOI:10.1029/2010JB007593
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	T Technology (General)
spellingShingle	T Technology (General) Jaafar, Mohd. Zaidi Vinogradov, J. Jackson, M. D. Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
description	We report experimental measurements of the streaming potential coupling coefficient in sandstones saturated with NaCl-dominated artificial and natural brines up to 5.5 M (321.4 g L−1 of NaCl; electrical conductivity of 23 S m−1). We find that the magnitude of the coupling coefficient decreases with increasing brine salinity, as observed in previous experimental studies and predicted by models of the electrical double layer. However, the magnitude of the coupling coefficient remains greater than zero up to the saturated brine salinity. The magnitude of the zeta potential we interpret from our measurements also decreases with increasing brine salinity in the low-salinity domain (<0.4 M; 23.4 g L−1 of NaCl and 3.4 S m−1) but reaches a constant value at higher salinity (>0.4 M). We hypothesize that the constant value of zeta potential observed at high salinity reflects the maximum packing of counterions in the diffuse part of the electrical double layer. Our hypothesis predicts that the zeta potential becomes independent of brine salinity when the diffuse layer thickness is similar to the diameter of the hydrated counterion. This prediction is confirmed by our experimental data and also by published measurements on alumina in KCl brine. At high salinity (>0.4 M), values of the streaming potential coupling coefficient and the corresponding zeta potential are the same within experimental error regardless of sample mineralogy and texture and the composition of the brine.
format	Article
author	Jaafar, Mohd. Zaidi Vinogradov, J. Jackson, M. D.
author_facet	Jaafar, Mohd. Zaidi Vinogradov, J. Jackson, M. D.
author_sort	Jaafar, Mohd. Zaidi
title	Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
title_short	Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
title_full	Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
title_fullStr	Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
title_full_unstemmed	Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
title_sort	measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity
publisher	American Geophysical Union
publishDate	2010
url	http://eprints.utm.my/id/eprint/26293/ https://dx.doi.org/10.1029/2010JB007593
_version_	1643647733759737856
score	13.211869

Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity

Similar Items