Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain)
A tailing impoundment situated in the mining district of La Carolina (Spain), which stores waste resulting from the washing of Pb and Ag sulphides, was studied 30 years after it was abandoned. Fibre optic sensors were installed to record humidity, temperature, electrical conductivity and oxygen cont...
| Authors: | ; ; ; ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2019 |
| Country: | España |
| Institution: | Universidad de Jaén |
| Repository: | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| OAI Identifier: | oai:ruja.ujaen.es:10953/3993 |
| Online Access: | https://hdl.handle.net/10953/3993 |
| Access Level: | Open access |
| Keyword: | Tailings impoundments Sulphide ore Mine drainage Surface water quality |
| _version_ | 1878740812328599552 |
|---|---|
| author | Rojas-Hita, Diego |
| author2 | Hidalgo-Estévez, María Carmen Kohfahl, Claus Rey, Javier Martínez-López, Julián Benavente, José |
| author2_role | author author author author author |
| author_browse | Benavente, José Hidalgo-Estévez, María Carmen Kohfahl, Claus Martínez-López, Julián Rey, Javier Rojas-Hita, Diego |
| author_facet | Rojas-Hita, Diego Hidalgo-Estévez, María Carmen Kohfahl, Claus Rey, Javier Martínez-López, Julián Benavente, José |
| author_role | author |
| collection | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| description | A tailing impoundment situated in the mining district of La Carolina (Spain), which stores waste resulting from the washing of Pb and Ag sulphides, was studied 30 years after it was abandoned. Fibre optic sensors were installed to record humidity, temperature, electrical conductivity and oxygen content in the pores down to a depth of 35.5 m. The oxygen profiles show an oxidised thickness of 5 m, meaning that the speed of the advancing oxidation front is estimated as 15 cm year−1. Sediment samples were obtained from different depths, and parameters such as pH, carbonates and metal(loid)s, among others, were analysed. High concentrations of As (> 500 mg kg−1), Fe (> 34,000 mg kg−1), Mn (> 900 mg kg−1), Pb (> 8000 mg kg−1) and Zn (> 5000 mg kg−1) were found. A piezometer was installed to enable the water inside the tailing pond to be sampled, and this presented high contents of SO42− (> 2400 mg L−1), Fe (> 28,000 μg L−1), Mn (> 7800 μg L−1) and Zn (> 7000 μg L−1), suggesting that the mineral leaching was related to the oscillations in the water table. The water from two drainage adits situated at the foot of the impoundment was also analysed, as well as surface water both upstream and downstream from it. The speciation-saturation models applied for these water samples indicated that in spite of the contamination potential of the impoundment, the deterioration in the quality of the river water is mainly due to the discharge from mining drains and the dissolution processes of precipitates accumulated along the riverbanks. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_d9d4c21563830971f2a4e8a76e2ba7e6 |
| institution | Universidad de Jaén |
| instname_str | Universidad de Jaén |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:ruja.ujaen.es:10953/3993 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher | Springer |
| publisherStr | Springer |
| reponame_str | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| spelling | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) Rojas-Hita, Diego Hidalgo-Estévez, María Carmen Kohfahl, Claus Rey, Javier Martínez-López, Julián Benavente, José Tailings impoundments Sulphide ore Mine drainage Surface water quality A tailing impoundment situated in the mining district of La Carolina (Spain), which stores waste resulting from the washing of Pb and Ag sulphides, was studied 30 years after it was abandoned. Fibre optic sensors were installed to record humidity, temperature, electrical conductivity and oxygen content in the pores down to a depth of 35.5 m. The oxygen profiles show an oxidised thickness of 5 m, meaning that the speed of the advancing oxidation front is estimated as 15 cm year−1. Sediment samples were obtained from different depths, and parameters such as pH, carbonates and metal(loid)s, among others, were analysed. High concentrations of As (> 500 mg kg−1), Fe (> 34,000 mg kg−1), Mn (> 900 mg kg−1), Pb (> 8000 mg kg−1) and Zn (> 5000 mg kg−1) were found. A piezometer was installed to enable the water inside the tailing pond to be sampled, and this presented high contents of SO42− (> 2400 mg L−1), Fe (> 28,000 μg L−1), Mn (> 7800 μg L−1) and Zn (> 7000 μg L−1), suggesting that the mineral leaching was related to the oscillations in the water table. The water from two drainage adits situated at the foot of the impoundment was also analysed, as well as surface water both upstream and downstream from it. The speciation-saturation models applied for these water samples indicated that in spite of the contamination potential of the impoundment, the deterioration in the quality of the river water is mainly due to the discharge from mining drains and the dissolution processes of precipitates accumulated along the riverbanks. Springer https://hdl.handle.net/10953/3993 |
| spellingShingle | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) Rojas-Hita, Diego Tailings impoundments Sulphide ore Mine drainage Surface water quality |
| status_str | publishedVersion |
| title | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| title_full | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| title_fullStr | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| title_full_unstemmed | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| title_short | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| title_sort | Oxidation Dynamics and Composition of the Flotation Plant Derived Tailing Impoundment Aquisgrana (Spain) |
| topic | Tailings impoundments Sulphide ore Mine drainage Surface water quality |
| topic_facet | Tailings impoundments Sulphide ore Mine drainage Surface water quality |
| url | https://hdl.handle.net/10953/3993 |