Environmental Risk and Management of Iron Tailings in Road Subgrade
The utilization of iron tailings in road construction poses significant environmental risks due to the complex release mechanisms of pollutants and varying regional conditions. This study integrates an exponential decay model with an instantaneous pollutant transport model, employing Monte Carlo sim...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/13/7/603 |
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| author | Xiaowei Xu Dapeng Zhang Jie Cao Chaoyue Wu Yi Wang Jing Hua Zehua Zhao Jun Zhang Qi Yu |
| author_facet | Xiaowei Xu Dapeng Zhang Jie Cao Chaoyue Wu Yi Wang Jing Hua Zehua Zhao Jun Zhang Qi Yu |
| author_sort | Xiaowei Xu |
| collection | DOAJ |
| description | The utilization of iron tailings in road construction poses significant environmental risks due to the complex release mechanisms of pollutants and varying regional conditions. This study integrates an exponential decay model with an instantaneous pollutant transport model, employing Monte Carlo simulations to assess risks and regional characteristics. Results show high Potential Hazard Indices (PHIs) for arsenic, manganese, barium, nickel, and lead, with PHI values between 4.2 and 22.7. Simulations indicate that manganese and nickel concentrations may exceed groundwater standards, particularly in humid areas. The study recommends controlling the iron tailings mixing ratio based on climate, suggesting limits of 35% in humid, 60% in semi-humid, and more lenient ratios in arid and semi-arid regions. It also underscores the need for improved risk assessment methodologies and region-specific management strategies at the national level. |
| format | Article |
| id | doaj-art-03f8f4f487d5440987e512a4a7022816 |
| institution | Kabale University |
| issn | 2305-6304 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj-art-03f8f4f487d5440987e512a4a70228162025-08-20T03:56:46ZengMDPI AGToxics2305-63042025-07-0113760310.3390/toxics13070603Environmental Risk and Management of Iron Tailings in Road SubgradeXiaowei Xu0Dapeng Zhang1Jie Cao2Chaoyue Wu3Yi Wang4Jing Hua5Zehua Zhao6Jun Zhang7Qi Yu8Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaNanjing Institute of Environmental Science, Ministry of Ecology and Environment of China, Nanjing 210042, ChinaDepartment of Environmental Science, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, ChinaThe utilization of iron tailings in road construction poses significant environmental risks due to the complex release mechanisms of pollutants and varying regional conditions. This study integrates an exponential decay model with an instantaneous pollutant transport model, employing Monte Carlo simulations to assess risks and regional characteristics. Results show high Potential Hazard Indices (PHIs) for arsenic, manganese, barium, nickel, and lead, with PHI values between 4.2 and 22.7. Simulations indicate that manganese and nickel concentrations may exceed groundwater standards, particularly in humid areas. The study recommends controlling the iron tailings mixing ratio based on climate, suggesting limits of 35% in humid, 60% in semi-humid, and more lenient ratios in arid and semi-arid regions. It also underscores the need for improved risk assessment methodologies and region-specific management strategies at the national level.https://www.mdpi.com/2305-6304/13/7/603iron tailingsresource utilizationheavy metalrisk management |
| spellingShingle | Xiaowei Xu Dapeng Zhang Jie Cao Chaoyue Wu Yi Wang Jing Hua Zehua Zhao Jun Zhang Qi Yu Environmental Risk and Management of Iron Tailings in Road Subgrade Toxics iron tailings resource utilization heavy metal risk management |
| title | Environmental Risk and Management of Iron Tailings in Road Subgrade |
| title_full | Environmental Risk and Management of Iron Tailings in Road Subgrade |
| title_fullStr | Environmental Risk and Management of Iron Tailings in Road Subgrade |
| title_full_unstemmed | Environmental Risk and Management of Iron Tailings in Road Subgrade |
| title_short | Environmental Risk and Management of Iron Tailings in Road Subgrade |
| title_sort | environmental risk and management of iron tailings in road subgrade |
| topic | iron tailings resource utilization heavy metal risk management |
| url | https://www.mdpi.com/2305-6304/13/7/603 |
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