Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer
The Golegohar mine area is located 53 km southwest of Sirjan city, Kerman province, Iran. The mine is one of the largest open-pit mines in the country. Due to exploitation, the pit floor level is below the water table. Current dewatering operation is going on by groundwater pumping in digging wells...
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University of Sistan and Baluchestan
2020-05-01
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| Series: | مخاطرات محیط طبیعی |
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| Online Access: | https://jneh.usb.ac.ir/article_4508_c86346ec81a0f14868d4484b8692e462.pdf |
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| author | Reza Jahanshahi Sepideh Mali Elham Ravand |
| author_facet | Reza Jahanshahi Sepideh Mali Elham Ravand |
| author_sort | Reza Jahanshahi |
| collection | DOAJ |
| description | The Golegohar mine area is located 53 km southwest of Sirjan city, Kerman province, Iran. The mine is one of the largest open-pit mines in the country. Due to exploitation, the pit floor level is below the water table. Current dewatering operation is going on by groundwater pumping in digging wells in or out of the pit to prevent flooding. Until now, discharged water and tailings have been disposed near pit without proper environmental safeguards. These waters are in contact with minerals containing heavy metals and it may dissolve or suspend them. Therefore, a tailings dam, constructed with environmental standards, has been proposed to address this problem. So the groundwater pollution plume is studied using FEFLOW software. The results of the sorption isotherm tests for Ni, Cu, and Co show good agreement with the Liner and Freundlich models. Moreover, the plot of Kd for every single solution concentration indicates that the Kd is increasing with Cu concentration while it is decreasing for other metals. Examining the isotherms indicate that Ni and Co behave similarly, while the Cu behavior is different despite equal initial molar concentrations. This implies that the sorption of Cu is higher than Co and Ni. Flow and mass transport simulation in the groundwater of area show due to the dewatering, a capture zone has been developed near the pit. So groundwater pollution plume moves toward the pit and contamination migration (advection) has been prevented to other area. In addition to results of mass transport simulation in the tailings dam show that due to low material permeability and hydraulic gradient in the aquifer, the retention time of the groundwater pollution plume will be long. |
| first_indexed | 2024-03-13T05:49:22Z |
| format | Article |
| id | doaj.art-f34b777ad4294966b74d97a0f05c59b3 |
| institution | Directory Open Access Journal |
| issn | 2676-4377 2676-4385 |
| language | fas |
| last_indexed | 2024-03-13T05:49:22Z |
| publishDate | 2020-05-01 |
| publisher | University of Sistan and Baluchestan |
| record_format | Article |
| series | مخاطرات محیط طبیعی |
| spelling | doaj.art-f34b777ad4294966b74d97a0f05c59b32023-06-13T19:56:01ZfasUniversity of Sistan and Baluchestanمخاطرات محیط طبیعی2676-43772676-43852020-05-01924153410.22111/jneh.2019.26678.14474508Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine AquiferReza Jahanshahi0Sepideh Mali1Elham Ravand2Assistant Professor of Hydrogeology, Geology Department, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, IranPh.D Student of Hydrogeology, Faculty of Geosciences, Shahrood University of Technology, Shahrood, IranM.Sc of Hydrogeology, Geology Department, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, IranThe Golegohar mine area is located 53 km southwest of Sirjan city, Kerman province, Iran. The mine is one of the largest open-pit mines in the country. Due to exploitation, the pit floor level is below the water table. Current dewatering operation is going on by groundwater pumping in digging wells in or out of the pit to prevent flooding. Until now, discharged water and tailings have been disposed near pit without proper environmental safeguards. These waters are in contact with minerals containing heavy metals and it may dissolve or suspend them. Therefore, a tailings dam, constructed with environmental standards, has been proposed to address this problem. So the groundwater pollution plume is studied using FEFLOW software. The results of the sorption isotherm tests for Ni, Cu, and Co show good agreement with the Liner and Freundlich models. Moreover, the plot of Kd for every single solution concentration indicates that the Kd is increasing with Cu concentration while it is decreasing for other metals. Examining the isotherms indicate that Ni and Co behave similarly, while the Cu behavior is different despite equal initial molar concentrations. This implies that the sorption of Cu is higher than Co and Ni. Flow and mass transport simulation in the groundwater of area show due to the dewatering, a capture zone has been developed near the pit. So groundwater pollution plume moves toward the pit and contamination migration (advection) has been prevented to other area. In addition to results of mass transport simulation in the tailings dam show that due to low material permeability and hydraulic gradient in the aquifer, the retention time of the groundwater pollution plume will be long.https://jneh.usb.ac.ir/article_4508_c86346ec81a0f14868d4484b8692e462.pdfpollution plumeisotherm testtailings damgroundwater contamination modellingfeflow software |
| spellingShingle | Reza Jahanshahi Sepideh Mali Elham Ravand Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer مخاطرات محیط طبیعی pollution plume isotherm test tailings dam groundwater contamination modelling feflow software |
| title | Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer |
| title_full | Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer |
| title_fullStr | Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer |
| title_full_unstemmed | Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer |
| title_short | Simulation of Heavy Metals Transport in the Groundwater of Golgohar Iron Ore Mine Aquifer |
| title_sort | simulation of heavy metals transport in the groundwater of golgohar iron ore mine aquifer |
| topic | pollution plume isotherm test tailings dam groundwater contamination modelling feflow software |
| url | https://jneh.usb.ac.ir/article_4508_c86346ec81a0f14868d4484b8692e462.pdf |
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