Leachability of metals from gold tailings by rainwater: An experimental and geochemical modelling approach.

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dc.citation.doi10.4314/wsa.v42i1.05en_ZA
dc.citation.epage42en_ZA
dc.citation.issue1en_ZA
dc.citation.spage38en_ZA
dc.contributor.authorGrover, B.P.C.
dc.contributor.authorJohnson, R.H.
dc.contributor.authorTutu, H.
dc.date.accessioned2016-11-18T13:42:19Z
dc.date.available2016-11-18T13:42:19Z
dc.date.issued2016-01
dc.description.abstractMine leachates from gold tailings impoundments usually contain elevated concentrations of metals and sulphates that impact negatively on water quality. This study was aimed at assessing the leachability of such metals from tailings by rainwater. Oxidised and unoxidised tailings were leached experimentally and through simulations using the PHREEQC geochemical modelling code. The results revealed that the majority of readily leachable metals were held in secondary mineral phases, mainly sulphates. A good agreement between experimental and modelling techniques was obtained, indicating the potential use of geochemical modelling in future metal release studies for the site. A list of reactive minerals for the tailings material was compiled. These minerals may or may not be present in the tailings; however, the list provides a means of estimating future reactivity or bulk metal release from the tailings.en_ZA
dc.description.librarianSP2016en_ZA
dc.identifier.citationGrover, B.P.C., Johnson, R.H. and Tutu, H. 2016. Leachability of metals from gold tailings by rainwater: An experimental and geochemical modelling approach. Water SA 42(1), pp.38-42.en_ZA
dc.identifier.issn0378-4738 (Print)
dc.identifier.issn1816-7950 (Online)
dc.identifier.urihttp://hdl.handle.net/10539/21455
dc.journal.titleWater SAen_ZA
dc.journal.volume42en_ZA
dc.language.isoenen_ZA
dc.publisherSouth African Water Research Commissionen_ZA
dc.rightsPublished under a Creative Commons Attribution Licenceen_ZA
dc.subjectGeochemistryen_ZA
dc.subjectGolden_ZA
dc.subjectMetalsen_ZA
dc.subjectMineralsen_ZA
dc.subjectWater quality Elevated concentrationsen_ZA
dc.subjectGeochemical modellingen_ZA
dc.subjectGold tailingsen_ZA
dc.subjectLeachable metalsen_ZA
dc.subjectMetal releaseen_ZA
dc.subjectMineral phasisen_ZA
dc.subjectModelling techniquesen_ZA
dc.subjectReactive mineralsen_ZA
dc.subjectconcentration (composition)en_ZA
dc.subjectexperimental studyen_ZA
dc.subjectgeochemistryen_ZA
dc.subjectleachateen_ZA
dc.subjectleachingen_ZA
dc.subjectrainwateren_ZA
dc.subjectsulfateen_ZA
dc.subjecttailingsen_ZA
dc.subjectwater qualityen_ZA
dc.titleLeachability of metals from gold tailings by rainwater: An experimental and geochemical modelling approach.en_ZA
dc.typeArticleen_ZA
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