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Acid mine drainage from the Panasqueira mine and its influence on Zêzere river (Central Portugal)

dc.contributor.authorCandeias, Carla
dc.contributor.authorÁvila, Paula Freire
dc.contributor.authorSilva, Eduardo Ferreira da
dc.contributor.authorFerreira, Adelaide
dc.contributor.authorSalgueiro, Ana Rita
dc.contributor.authorTeixeira, João Paulo
dc.date.accessioned2014-02-02T20:43:05Z
dc.date.available2014-02-02T20:43:05Z
dc.date.issued2014
dc.descriptionAvailable online 25 October 2013por
dc.description.abstractThe Panasqueira hydrothermal mineralization, located in central Portugal, is the biggest Sn–W deposit of the Western Europe. The main evidences of the mining exploitation and ore treatment operations are testified with huge tailings, mainly, in the Rio and Barroca Grande areas. The mining and beneficiation processes, at the site, produces metal rich mine wastes. Oxidation of sulfides tailings and flow from open impoundments are responsible for the mobilization and migration of metals from the mine wastes into the environment. Acid mine drainage (AMD) discharged from Rio tailing has a pH around 3 and high metal concentrations. In Zêzere river, Fe and As are the most rapidly depleted downstream from AMD once As adsorbs, coprecipitate and form compounds with iron oxyhydroxides. The Zêzere river waters are oversaturated with respect to kaolinite and goethite and ferrihydrite can precipitate on stream with a near-neutral pH. At sites having low pH the dissolved Fe species in the water, mainly, occur as sulfate complexes due to a high SO4 concentration. Melanterite (Fe2+(SO4)·7(H2O)) and minor amounts of rozenite (Fe2+(SO4)·4(H2O)) and szomolnokite (Fe2+(SO4)·(H2O)) were observed on Rio tailing basement.por
dc.identifier.citationCandeias, Carla... [et al.] - Acid mine drainage from the Panasqueira mine and its influence on Zêzere river (Central Portugal). In: Journal of African Earth Sciences, Vol. 99 (2014), p. 705-712por
dc.identifier.issn1464-343X
dc.identifier.urihttp://hdl.handle.net/10400.9/2166
dc.language.isoengpor
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jafrearsci.2013.10.006por
dc.subjectActividade mineirapor
dc.subjectPoluição do ambientepor
dc.subjectResíduos mineirospor
dc.subjectDrenagem ácida mineirapor
dc.subjectHidrogeoquímicapor
dc.subjectMinas da Panasqueira (Portugal)por
dc.subjectRio Zêzere (Portugal)por
dc.subjectPortugal (Centro)por
dc.titleAcid mine drainage from the Panasqueira mine and its influence on Zêzere river (Central Portugal)por
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of African Earth Sciencespor
person.familyNameCandeias
person.familyNameÁvila
person.givenNameCarla
person.givenNamePaula
person.identifier.ciencia-idD912-6FC4-79CC
person.identifier.orcid0000-0001-6664-8545
person.identifier.orcid0000-0002-4080-0737
person.identifier.ridA-2521-2014
person.identifier.ridB-2774-2014
person.identifier.scopus-author-id37062910200
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4f69c437-1652-4a44-8d80-148802226f24
relation.isAuthorOfPublication8ae5b98e-08fe-4091-a8c7-a18a501bb150
relation.isAuthorOfPublication.latestForDiscovery8ae5b98e-08fe-4091-a8c7-a18a501bb150

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