Solute Transport Modelling in Low-Permeability Homogeneous and Saturated Soil media: Transport in Low-Permeability Soil media

Muhammad Zaheer; Hadayatullah Khan; Syed Husnain Ali Shah; Saad Ahmed Mashwani; Ehsan ul Haq; Fawaz Manzoor

doi:10.17794/rgn.2021.2.3

Solute Transport Modelling in Low-Permeability Homogeneous and Saturated Soil media

Transport in Low-Permeability Soil media

Authors

Muhammad Zaheer Hazara University https://orcid.org/0000-0001-9199-5880
Hadayatullah Khan Lecturer Department of Geology Hazara University 21300 Mansehra Pakistan https://orcid.org/0000-0002-6575-4802
Syed Husnain Ali Shah Lecturer Department of Geology Hazara University 21300 Mansehra Pakistan https://orcid.org/0000-0003-1527-5712
Saad Ahmed Mashwani Lecturer Department of Geology Hazara University 21300 Mansehra Pakistan https://orcid.org/0000-0002-9643-8933
Ehsan ul Haq Lecturer Department of Geology Hazara University 21300 Mansehra Pakistan https://orcid.org/0000-0002-2279-9939
Fawaz Manzoor Lecturer Department of Geology Hazara University 21300 Mansehra Pakistan https://orcid.org/0000-0001-7551-3642

DOI:

https://doi.org/10.17794/rgn.2021.2.3

Keywords:

: Low permeability; Relative Concentration; Non-Fickian; Continuous-Time Random Walk.

Abstract

This study aims to analyze the relative concentration (C/C₀) data to investigates the solute transport breakthrough. The modeling approaches considered were the Convection-Dispersion Equation (CDE), Two-Region Model (TRM), and Continuous Time Random Walk (CTRW). It was found that higher values of determination coefficient (R²) and lower values of root mean square error (RMSE) concerning the fits of CDE and TRM and CTRW. In this study the CXTFIT2.1 software and to carry on the simulation analysis of CDE and TRM. For the CTRW simulation of the breakthrough curve, we used the CTRW Matlab Toolbox v.3.1. It is figured that, in the comparison of CDE, TRM, and CTRW models analysis of the relative concentration in low-permeability media; we tend to use CTRW to describe the transport behavior well because there are prevailing Fickian and non-Fickian transport. One dimensional CTRW results yielded a set of five dominant parameters (υ_ψ, D_ψ, β, t₁, and t₂), indicated that a transport regime that was consistently Fickian in the breakthrough curve (BTC). The CTRW gives better fitting results to the BTCs when β has an increasing pattern towards 2.00.

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Published

2021-03-18

How to Cite

Zaheer, M., Khan, H., Shah, S. H. A., Mashwani, S. A., Haq, E. ul, & Manzoor, F. (2021). Solute Transport Modelling in Low-Permeability Homogeneous and Saturated Soil media: Transport in Low-Permeability Soil media. Rudarsko-geološko-Naftni Zbornik, 36(2), 25–32. https://doi.org/10.17794/rgn.2021.2.3

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Issue

Vol. 36 No. 2 (2021): No. 53

Section

Geology

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