SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON

Fluid flow in a dual permeable medium (DPM) is essential in solute transport in mining and aquifer studies. In this paper, water flushing into a contaminated DPM containing fine-grained lenses with different geometries was investigated with the Lattice Boltzmann Method (LBM). The LBM model used in t...

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Autores principales:	Mojtaba Dehqani Tafti, Faramarz Doulati Ardejani, Mohammad Fatehi Marji, Yousef Shiri
Formato:	article
Lenguaje:	EN HR
Publicado:	Faculty of Mining, Geology and Petroleum Engineering 2021
Materias:	Lattice Boltzmann Method (LBM) contamination back-diffusion low-permeable lenses aquifer remediation dual permeable medium (DPM) Mining engineering. Metallurgy TN1-997 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/4d165f77b7e349b39558359aefabb2c0
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id	oai:doaj.org-article:4d165f77b7e349b39558359aefabb2c0
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spelling	oai:doaj.org-article:4d165f77b7e349b39558359aefabb2c02021-12-05T20:13:18ZSIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON1849-0409https://doaj.org/article/4d165f77b7e349b39558359aefabb2c02021-01-01T00:00:00Zhttps://hrcak.srce.hr/file/386702https://doaj.org/toc/1849-0409Fluid flow in a dual permeable medium (DPM) is essential in solute transport in mining and aquifer studies. In this paper, water flushing into a contaminated DPM containing fine-grained lenses with different geometries was investigated with the Lattice Boltzmann Method (LBM). The LBM model used in this study was D2Q9 with a relaxation time of 1, a cohesion value of 3 for a fluid density of 1 (mu.Lu-3). The saturated fluid in the DPM was a contaminant that usually stays in low permeable lenses and after flushing, it is leaked into the porous medium by a second fluid (water). This phenomenon is predominant when the displacing fluid has a lower concentration than the contaminated fluid. Diffusion and advection are the main mechanisms that control fluid flow in the porous medium. The results of the simulations showed: (1) advection controlled solute transport through the flushing phase, and back-diffusion occurred after the change in phase; (2) the lenses’ geometry influenced the fluid flow pattern and the remediation process. As a result, aquifer remediation strategies based on the lenses’ geometry and their permeability can help us select the appropriate environmental protection.Mojtaba Dehqani TaftiFaramarz Doulati ArdejaniMohammad Fatehi MarjiYousef ShiriFaculty of Mining, Geology and Petroleum EngineeringarticleLattice Boltzmann Method (LBM)contamination back-diffusionlow-permeable lensesaquifer remediationdual permeable medium (DPM)Mining engineering. MetallurgyTN1-997GeologyQE1-996.5ENHRRudarsko-geološko-naftni Zbornik, Vol 36, Iss 5, Pp 57-66 (2021)
institution	DOAJ
collection	DOAJ
language	EN HR
topic	Lattice Boltzmann Method (LBM) contamination back-diffusion low-permeable lenses aquifer remediation dual permeable medium (DPM) Mining engineering. Metallurgy TN1-997 Geology QE1-996.5
spellingShingle	Lattice Boltzmann Method (LBM) contamination back-diffusion low-permeable lenses aquifer remediation dual permeable medium (DPM) Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Mojtaba Dehqani Tafti Faramarz Doulati Ardejani Mohammad Fatehi Marji Yousef Shiri SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
description	Fluid flow in a dual permeable medium (DPM) is essential in solute transport in mining and aquifer studies. In this paper, water flushing into a contaminated DPM containing fine-grained lenses with different geometries was investigated with the Lattice Boltzmann Method (LBM). The LBM model used in this study was D2Q9 with a relaxation time of 1, a cohesion value of 3 for a fluid density of 1 (mu.Lu-3). The saturated fluid in the DPM was a contaminant that usually stays in low permeable lenses and after flushing, it is leaked into the porous medium by a second fluid (water). This phenomenon is predominant when the displacing fluid has a lower concentration than the contaminated fluid. Diffusion and advection are the main mechanisms that control fluid flow in the porous medium. The results of the simulations showed: (1) advection controlled solute transport through the flushing phase, and back-diffusion occurred after the change in phase; (2) the lenses’ geometry influenced the fluid flow pattern and the remediation process. As a result, aquifer remediation strategies based on the lenses’ geometry and their permeability can help us select the appropriate environmental protection.
format	article
author	Mojtaba Dehqani Tafti Faramarz Doulati Ardejani Mohammad Fatehi Marji Yousef Shiri
author_facet	Mojtaba Dehqani Tafti Faramarz Doulati Ardejani Mohammad Fatehi Marji Yousef Shiri
author_sort	Mojtaba Dehqani Tafti
title	SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
title_short	SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
title_full	SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
title_fullStr	SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
title_full_unstemmed	SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON
title_sort	simulation of aquifer remediation from low-permeable lenses by back-diffusion phenomenon
publisher	Faculty of Mining, Geology and Petroleum Engineering
publishDate	2021
url	https://doaj.org/article/4d165f77b7e349b39558359aefabb2c0
work_keys_str_mv	AT mojtabadehqanitafti simulationofaquiferremediationfromlowpermeablelensesbybackdiffusionphenomenon AT faramarzdoulatiardejani simulationofaquiferremediationfromlowpermeablelensesbybackdiffusionphenomenon AT mohammadfatehimarji simulationofaquiferremediationfromlowpermeablelensesbybackdiffusionphenomenon AT yousefshiri simulationofaquiferremediationfromlowpermeablelensesbybackdiffusionphenomenon
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SIMULATION OF AQUIFER REMEDIATION FROM LOW-PERMEABLE LENSES BY BACK-DIFFUSION PHENOMENON

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