Simulating arsenic discharge flux at a relic smelting site in Guangxi Zhuang Autonomous Region, China
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..
Anthropogenic groundwater arsenic (As) pollution is common in many aquifers in Southwest China. It is concerned that long-term random disposal of As smelting slag could induce the transport of high-As groundwater into previously uncontaminated aquifers. Here, we used HELP-MODFLOW-MT3DMS model simulations to integrate the percolation, groundwater flow, and solute transport processes at an aquifer at site scale, constrained by weather, hydrogeology, and monitoring data. Our simulations provide a new method framework of the simulated percolation by HELP model and have induced As spatiotemporal distribution in the aquifer. According to the HELP model simulation results, percolation volume accounts for 24% of rainfall over 18 years. This work determined that the As discharge trend was fitted by double-constants kinetics based on the leaching experiment. And this work calculates total mass distribution of As in the aquifer over 18 years. We have found that the sustained As pollution relies on the rainfall that acts as the primary contributor of elevated As concentrations. Model simulation results suggest that 51.70% of the total As mass (1.96 × 104 kg) was fixed in low permeability solid media. The total As mass discharged into groundwater reached 9.3 × 103 kg, accounting for 24.68%. The accumulative outflow mass of arsenic was 8.0 × 103 kg, accounting for 21.62%.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:31 |
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| Enthalten in: |
Environmental science and pollution research international - 31(2024), 8 vom: 16. Feb., Seite 12094-12111 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Huang, Zhenzhong [VerfasserIn] |
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| Links: |
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| Themen: |
Arsenic |
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| Anmerkungen: |
Date Completed 16.02.2024 Date Revised 16.02.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s11356-023-31695-y |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM367160455 |
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| 520 | |a Anthropogenic groundwater arsenic (As) pollution is common in many aquifers in Southwest China. It is concerned that long-term random disposal of As smelting slag could induce the transport of high-As groundwater into previously uncontaminated aquifers. Here, we used HELP-MODFLOW-MT3DMS model simulations to integrate the percolation, groundwater flow, and solute transport processes at an aquifer at site scale, constrained by weather, hydrogeology, and monitoring data. Our simulations provide a new method framework of the simulated percolation by HELP model and have induced As spatiotemporal distribution in the aquifer. According to the HELP model simulation results, percolation volume accounts for 24% of rainfall over 18 years. This work determined that the As discharge trend was fitted by double-constants kinetics based on the leaching experiment. And this work calculates total mass distribution of As in the aquifer over 18 years. We have found that the sustained As pollution relies on the rainfall that acts as the primary contributor of elevated As concentrations. Model simulation results suggest that 51.70% of the total As mass (1.96 × 104 kg) was fixed in low permeability solid media. The total As mass discharged into groundwater reached 9.3 × 103 kg, accounting for 24.68%. The accumulative outflow mass of arsenic was 8.0 × 103 kg, accounting for 21.62% | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a As discharged flux | |
| 650 | 4 | |a As smelting slag | |
| 650 | 4 | |a Mass distribution | |
| 650 | 4 | |a Numerical simulation | |
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| 650 | 7 | |a Water Pollutants, Chemical |2 NLM | |
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| 700 | 1 | |a Cui, Weihua |e verfasserin |4 aut | |
| 700 | 1 | |a Cao, Guoliang |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Jun |e verfasserin |4 aut | |
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