A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media

Among the different contributions generating self-potential, the streaming potential is of particular interest in hydrogeology for its sensitivity to water flow. Estimating water flux in porous media using streaming potential data relies on our capacity to understand, model, and upscale the electrok...

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Detalles Bibliográficos
Autores principales:	Guarracino, Luis, Jougnot, Damien
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2018
Materias:	Astronomía effective excess charge self-potential streaming potential groundwater porous media analytical model
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124421
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124421
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Astronomía effective excess charge self-potential streaming potential groundwater porous media analytical model
spellingShingle	Astronomía effective excess charge self-potential streaming potential groundwater porous media analytical model Guarracino, Luis Jougnot, Damien A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
topic_facet	Astronomía effective excess charge self-potential streaming potential groundwater porous media analytical model
description	Among the different contributions generating self-potential, the streaming potential is of particular interest in hydrogeology for its sensitivity to water flow. Estimating water flux in porous media using streaming potential data relies on our capacity to understand, model, and upscale the electrokinetic coupling at the mineral-solution interface. Different approaches have been proposed to predict streaming potential generation in porous media. One of these approaches is the flux averaging which is based on determining the excess charge which is effectively dragged in the medium by water flow. In this study, we develop a physically based analytical model to predict the effective excess charge in saturated porous media using a flux-averaging approach in a bundle of capillary tubes with a fractal pore size distribution. The proposed model allows the determination of the effective excess charge as a function of pore water ionic concentration and hydrogeological parameters like porosity, permeability, and tortuosity. The new model has been successfully tested against different set of experimental data from the literature. One of the main findings of this study is the mechanistic explanation to the empirical dependence between the effective excess charge and the permeability that has been found by several researchers. The proposed model also highlights the link to other lithological properties, and it is able to reproduce the evolution of effective excess charge with electrolyte concentrations.
format	Articulo Articulo
author	Guarracino, Luis Jougnot, Damien
author_facet	Guarracino, Luis Jougnot, Damien
author_sort	Guarracino, Luis
title	A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
title_short	A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
title_full	A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
title_fullStr	A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
title_full_unstemmed	A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media
title_sort	physically based analytical model to describe effective excess charge for streaming potential generation in water saturated porous media
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/124421
work_keys_str_mv	AT guarracinoluis aphysicallybasedanalyticalmodeltodescribeeffectiveexcesschargeforstreamingpotentialgenerationinwatersaturatedporousmedia AT jougnotdamien aphysicallybasedanalyticalmodeltodescribeeffectiveexcesschargeforstreamingpotentialgenerationinwatersaturatedporousmedia AT guarracinoluis physicallybasedanalyticalmodeltodescribeeffectiveexcesschargeforstreamingpotentialgenerationinwatersaturatedporousmedia AT jougnotdamien physicallybasedanalyticalmodeltodescribeeffectiveexcesschargeforstreamingpotentialgenerationinwatersaturatedporousmedia
bdutipo_str	Repositorios
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A Physically Based Analytical Model to Describe Effective Excess Charge for Streaming Potential Generation in Water Saturated Porous Media

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