dc.creator | Fernández Landero, Sandra | es |
dc.creator | Fernández Caliani, Juan Carlos | es |
dc.creator | Giráldez, María Inmaculada | es |
dc.creator | Morales, Emilio | es |
dc.creator | Barba Brioso, Cinta | es |
dc.creator | González Díez, María Isabel | es |
dc.date.accessioned | 2024-03-15T12:25:15Z | |
dc.date.available | 2024-03-15T12:25:15Z | |
dc.date.issued | 2023-03-23 | |
dc.identifier.citation | Fernández Landero, S., Fernández Caliani, J.C., Giráldez, M.I., Morales, E., Barba Brioso, C. y González Díez, M.I. (2023). Soil contaminated with hazardous waste materials at Rio Tinto mine (Spain) is a persistent secondary source of acid and heavy metals to the environment. Minerals, 13 (4), 456. https://doi.org/10.3390/min13040456. | |
dc.identifier.issn | 2075-163X | es |
dc.identifier.uri | https://hdl.handle.net/11441/156321 | |
dc.description.abstract | Mineralogical analysis and laboratory-based leaching tests coupled with speciation modeling were undertaken to quantify the potential for short-term acid generation and the release of
trace elements from soils heavily contaminated with mine waste at Rio Tinto. Three different waste
materials were considered as case studies: roasted pyrite, copper slags, and leached sulfide ores.
The results showed elevated values of net acid generation (up to 663 mmol H+/kg), the major pools
being potential sulfidic acidity and acidity retained in jarosite. Remarkable contents of As and toxic
heavy metals were found especially in the slag-contaminated soil. Copper, Zn, and Pb were the most
abundant metals in the acid leach solutions resulting from mine soil-water interaction, with peak
values of 55.6 mg L−1
, 2.77 mg L−1
, and 2.62 mg L−1
, respectively. Despite the high total contents
of trace elements occurring in soil, the mobile fraction was limited to maximum release values of
12.60% for Cd and 10.27% for Cu, according to the test leaching. Speciation calculations indicated
that free metal ions (M2+) and sulfate species (MSO4
0
) accounted for most of the dissolved load.
Acid soil drainage is a secondary source of acid and heavy metals in the mine site and, therefore,
an effective land reclamation program should ensure that acidity and metal mobility are reduced to
environmentally sustainable levels. | es |
dc.description.sponsorship | Junta de Andalucía (España) y Fondo Europeo de Desarrollo Regional Andalucía 2014-2020 P-18-TP-3503 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.relation.ispartof | Minerals, 13 (4), 456. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Technosol | es |
dc.subject | mine wastes | es |
dc.subject | soil contamination | es |
dc.subject | acidity | es |
dc.subject | leaching test | es |
dc.subject | metal release | es |
dc.subject | speciation | es |
dc.subject | ICP-OES/MS | es |
dc.subject | acid soil drainage | es |
dc.subject | Iberian Pyrite Belt | es |
dc.title | Soil contaminated with hazardous waste materials at Rio Tinto mine (Spain) is a persistent secondary source of acid and heavy metals to the environment | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Cristalografía, Mineralogía y Química Agrícola | es |
dc.relation.projectID | 2014-2020 P-18-TP-3503 | es |
dc.relation.publisherversion | https://doi.org/10.3390/min13040456 | es |
dc.identifier.doi | 10.3390/min13040456 | es |
dc.journaltitle | Minerals | es |
dc.publication.volumen | 13 | es |
dc.publication.issue | 4 | es |
dc.publication.initialPage | 456 | es |
dc.contributor.funder | Junta de Andalucía | es |
dc.contributor.funder | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) | es |