Quantification of electrical resistance to estimate NaCl behavior in a column under controlled conditions

Junejo, S. A.; Zhou, Qi; Talpur, M. A.; Dongqing, Wang; Yang, Jian

doi:10.1134/s0016702914090055

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Electrical property quantification is a useful method for better understanding of contaminant movement and monitoring in recent years [17]. Electrical resistance measurement for different geotechnical parameters of the subsurface characteristics has been reported [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Simulation Study of Flow and Solute Transport in Pore-Fractured Media Based on High-Density Resistivity Method

Yan

Wang

et al. 2021

Lithosphere

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Pore-fractured media is a ubiquitous phenomenon throughout the world and is a high degree of heterogeneity. The mechanism of water flow and solute transport in the media is still not fully clear. In this study, experiments were conducted in pore-fracture media with various hydraulic gradients to establish the relationship between the hydraulic gradient and specific discharge by using a side guide and to test the resistivity of tracer (sodium chloride) by using a high-density resistivity monitoring system. Quantifying models were, respectively, set up, and results were compared with the traditional methods. Main results are obtained that (1) the phenomenon from Darcian flow to non-Darcian flow was found in pore-fractured media. Both the Forchheimer and Izbash equations can well describe the flow process in the back part of the curve; (2) the phenomenon from non-Fickian to Fickian then to non-Fickian was found in fractured media; (3) good performance of CTRW-TPL has been obtained for both the larger R2 and smaller RMSE values, their counterparts resulting from the ADE model.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Simulation Study of Flow and Solute Transport in Pore-Fractured Media Based on High-Density Resistivity Method

Yan

Wang

et al. 2021

Lithosphere

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show abstract

“…Unfortunately, with the rapid economy development and an increase in population in recent decades, environmental pollution becomes more serious in both the surface water and groundwater [1]. Thus, accurate prediction of the solute transport in the surface and subsurface is very important for both pollution control and aquifer remediation [2]. However, the measurement and quantitative analysis of flow and solute transport in a fracture aquifer remains one of the most challenging problems in subsurface hydrology, which will be investigated in this study.…”

Section: Introductionmentioning

confidence: 99%

Non-Fickian Solute Transport in a Single Fracture of Marble Parallel Plate

Yan

Qian

et al. 2018

Geofluids

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Accurate prediction of solute transport processes in a fracture aquifer is an important task not only for proper management of the groundwater but also for pollution control. A key issue of this task is how to accurately obtain the experimental data and to analyze the solute transport in fracture in subsurface hydrology, which would greatly help us to understand the releasing mechanism and transport of the solute in a fracture. In this study, a fracture experiment is conducted in a laboratory based on previous studies. The fracture used with a length of 60 cm and a width of 10 cm is sealed with glass glue to avoid leakage of tracer due to uneven fracture walls. The sodium chloride (NaCl) solute is injected from the left of the fracture. And an electrical conductivity monitoring system is installed on the right of the fracture. Then breakthrough curves (BTCs) of solute transport are fitted using the classical advectiondispersion equation (ADE) and the truncation power-law function (TPL) model in the package of the continuous time random walk (CTRW). The results show that the flow satisfies non-Darcian law in the experimental conditions, which can be better fitted using the Forchheimer equation and Izbash equation. The solute transport presents non-Fickian phenomena and shows a long tailing. The fitting results of the TPL model are far better than ADE in fitting the long tailing at three different flow velocities. Furthermore, electrical conductivity monitoring method not only is effective but also has an advantage of no disturbance to water and concentration fields in a fracture.

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Study on non-Darcian flow and solute transport characteristics through a filled single fracture

Pandey

Sharma

2023

ISH Journal of Hydraulic Engineering

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Quantification of electrical resistance to estimate NaCl behavior in a column under controlled conditions

Cited by 4 publications

References 16 publications

Experimental and Numerical Simulation Study of Flow and Solute Transport in Pore-Fractured Media Based on High-Density Resistivity Method

Experimental and Numerical Simulation Study of Flow and Solute Transport in Pore-Fractured Media Based on High-Density Resistivity Method

Non-Fickian Solute Transport in a Single Fracture of Marble Parallel Plate

Study on non-Darcian flow and solute transport characteristics through a filled single fracture

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