Groundwater Modeling and Groundwater Contamination

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrogeology".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 1399

Special Issue Editors


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Guest Editor
Department of Geology, College of Natural Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
Interests: groundwater contamination; groundwater modeling; groundwater ecosystem; water policy; microplastic contamination in groundwater
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Earth Science Education, Kongju National University, Chungnam 32588, Republic of Korea
Interests: acid mine drainage; groundwater geochemistry; groundwater pollution; remediation methods; groundwater policy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Groundwater contamination and modeling have always been an intriguing topic receiving both public and academic attention, the importance of which increased in recent years as risks in our subsurface environments arose. Many studies have focused on simulations and models concerning traditional contaminants such as heavy metals, BTEX, and nitrate in groundwater. A new strand that attracted much focus in recent years addresses emerging contaminants such as microplastics, which received little attention in the past when their adverse effects on the ecological environment and human health were veiled. This trend epitomizes an urgent need to expand research efforts to scrutinize groundwater pollution mechanisms to enhance contamination detection and understanding on quality management, where new types of contamination can arise at any time due to any cause.

This Special Issue, ‘Groundwater Modeling and Groundwater Contamination’, seeks to create a platform to review and present the advanced methodologies, current progress and challenges, and future opportunities in groundwater modelling and groundwater contamination. The journal Water serves the international community in all areas, not only concerning groundwater but also environmental science and environmental education. This Special Issue aims to encourage discussions highlighting both quantitative and qualitative analysis on the status of groundwater pollution and depletion under the effects of climate change for sustainable development. This Issue awaits submissions of original research articles delivering state-of-the-art modeling analysis and new findings on emerging contaminants to offer new perspectives for potential readers.

Prof. Dr. Heejung Kim
Prof. Dr. Chungwan Lim
Guest Editors

Manuscript Submission Information

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Keywords

  • groundwater quality management
  • groundwater modelling
  • groundwater contaminants
  • climate change
  • sustainable development
  • water security

Published Papers (1 paper)

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Research

25 pages, 7881 KiB  
Article
Axial Groundwater Contaminant Dispersion Modeling for a Finite Heterogeneous Porous Medium
by Rashmi Radha and Mritunjay Kumar Singh
Water 2023, 15(14), 2676; https://doi.org/10.3390/w15142676 - 24 Jul 2023
Cited by 1 | Viewed by 1105
Abstract
In this study, a two-dimensional contaminant transport model with time-varying axial input sources subject to non-linear sorption, decay, and production is numerically solved to find the concentration distribution profile in a heterogeneous, finite soil medium. The axial input sources are assigned on the [...] Read more.
In this study, a two-dimensional contaminant transport model with time-varying axial input sources subject to non-linear sorption, decay, and production is numerically solved to find the concentration distribution profile in a heterogeneous, finite soil medium. The axial input sources are assigned on the coordinate axes of the soil medium, with background sources varying sinusoidally with space. The groundwater velocities are considered space-dependent in the longitudinal and transversal directions. Various forms of axial input sources are considered to study their transport patterns in the medium. The alternating direction implicit (ADI) and Crank-Nicolson (CN) methods are applied to approximate the two-dimensional governing equation, and the obtained algebraic system of equations in each case is further solved by MATLAB scripts. Both approximate solutions are illustrated graphically for various hydrological input data. The influence of various hydrogeological input parameters, such as the medium’s porosity, density, sorption conditions, dispersion coefficients, etc., on the contaminant distribution is analyzed. Further, the influence of constant and varying velocity parameters on groundwater contaminant transport is studied. The stability of the proposed model is tested using the Peclet and Courant numbers. Substantial similarity is observed when the approximate solution obtained using the CN method is compared with the finite element method in a special case. The proposed approximate solution is compared with the existing numerical solutions, and an overall agreement of 98–99% is observed between them. Finally, the stability analysis reveals that the model is stable and robust. Full article
(This article belongs to the Special Issue Groundwater Modeling and Groundwater Contamination)
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