Study on Aquifer Contamination by Heavy Metals Using Finite Element Modeling with Freundlich Parameters in Traditional Metal Recycling Craft Village in Bac Ninh Province, Vietnam

The traditional craft villages in Vietnam in general and in Bac Ninh province in particular have been exposing many negative impacts on the environment. The heavy metal-rich wastes from the metal recycling casting craft villages in the field of metal recycling and metal casting are causing severe he...

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Bibliographic Details
Published in:Russian journal of Pacific geology 2024-08, Vol.18 (4), p.452-466
Main Authors: Thao, Nguyen Bach, Shakirov, Renat, Syrbu, Nadezhda, Long, Tran Vu, Thu, Trinh Hoai, Bang, Dao Duc, Tuan, Tran Quang, Duong Thi Thanh Thuy, Van Anh, Kieu Thi, Hien, Vu Thu, Lee, Natalia
Format: Article
Language:English
Subjects:
Aquifers
Boundary conditions
Cadmium
Contaminated sediments
Earth and Environmental Science
Earth Sciences
Environmental impact
Geology
Groundwater
Heavy metals
Holocene
Lead
Modelling
Nickel
Parameters
Pleistocene
Pollution
Recycling
Sediment
Sediment pollution
Sediments
Water pollution
Water resources
Zinc
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Summary:The traditional craft villages in Vietnam in general and in Bac Ninh province in particular have been exposing many negative impacts on the environment. The heavy metal-rich wastes from the metal recycling casting craft villages in the field of metal recycling and metal casting are causing severe heavy metal pollution not only to the air, soils, and sediments but also to the groundwater resources. In Da Hoi iron recycling craft village in Chau Khe ward, Tu Son town, Bac Ninh province, Vietnam, the Holocene aquifer is exposed to the Ngu Huyen Khe River’s sediments contaminated with heavy metals Lead, Cadmium, Nickel, and Zinc. Freundlich isotherm parameters of the Holocene aquifer have been selected for finite element modeling of heavy metal transport with high temporal and spatial varying retardation factors to get reliable quantitative heavy metals’ distribution in depth and time. Initial and boundary conditions have been augmented to be established. The retardation factors of the advection and dispersion transport in the Holocene aquifer for heavy metals Pb, Zn, Cd, and Ni are very highly none-linear and very much varying in time and space: 8.7–66.4 for Pb, 2.0–12 for Zn, 1.7–4.8 for Cd and 1.1–5.9 for Ni. The results of the numerical modeling show that heavy metal transport in the Holocene aquifer is very fast and the entire aquifer thickness has equilibrium aquifer formation and aquifer water heavy concentrations after around 2–2.5 years for Cd and Ni, around 4 years for Zn and around 27 years for Pb. The heavy metals’ fluxes from the Holocene aquifer to the Pleistocene aquifer are maximal and more or less constant from the equilibrium time and would cause severe contamination of the Pleistocene aquifer.
ISSN:1819-7140
1819-7159
DOI:10.1134/S1819714024700155