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dc.contributor.authorNavarro Flores, Andrés Francisco
dc.contributor.authorDomènech Rubio, Luis Miguel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.coverage.spatialeast=-2.0597159000000147; north=36.8551221; name=04116 Minas de Rodalquilar, Níjar, Almería, Espanya
dc.identifier.citationNavarro, A.; Domenech, L. Arsenic and metal mobility from Au mine tailings in Rodalquilar (Almaría, SE Spain). "Environmental earth science", 19 Febrer 2010, vol. 60, núm. 1, p. 121-138.
dc.description.abstractIn the old mining area of Rodalquilar, mine wastes, soil and sediments were characterized and the results revealed high concentration of Au, Ag, As, Bi,Cu, Fe, Mn, Pb, Se, Sb and Zn in tailings and sediments. The contaminant of greatest environmental concern is As. The mean concentration in the tailings was 679.9, and 345 mg/kg in the sediments of Playazo creek. The groundwater samples from the alluvial aquifer showed high concentration of Al, As, Cd, Fe, Hg, Mn, Ni, Pb, Se, Sb and Zn and very high concentration of chloride and sulfate, which were above the concentration defined in the European standards for drinking water. The presence of As in groundwater may be caused by the oxidation of arsenian pyrite, the possible As desorption from goethite and ferrihydrite and the jarosite dissolution. Groundwater concentrations of Cd, Fe, Mn, and possibly Cu, were associated with low values of Eh, indicating the possible dissolution of oxy-hydroxides of Fe and Mn. The mobility of metals in the column experiments show the release of Al, Fe, Mn, Cr, Cu, Ni, V and Zn in significant concentrations but below the detected values in groundwater. However, As, Cd, Sb, Se Pb and Au, are generally mobilized in concentrations above the detected values in groundwater. The possible mass transfer processes that could explain the presence of the contaminants in the aquifer and the leachates was simulated with the PHREEQC numerical code and revealed the possible dissolution of the following mineralphases: jarosite, natrojarosite, arsenian pyrite, alunite, chlorite, kaolinite and calcite.
dc.format.extent18 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Enginyeria de mines
dc.subject.lcshMineral industries--Environmental aspects
dc.titleArsenic and metal mobility from Au mine tailings in Rodalquilar (Almaría, SE Spain)
dc.subject.lemacAigües subterrànies -- Contaminació
dc.subject.lemacArsènic -- Toxicologia
dc.subject.lemacMetalls -- Aspectes ambientals
dc.subject.lemacIndústria minera -- Deixalles -- Eliminació
dc.contributor.groupUniversitat Politècnica de Catalunya. MTA - Modelització i Tecnologia Ambiental
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorNavarro, A.; Domenech, L.
local.citation.publicationNameEnvironmental earth science

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