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

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dc.contributor.author Grover, B.P.C.
dc.contributor.author Johnson, R.H.
dc.contributor.author Tutu, H.
dc.date.accessioned 2016-11-18T13:42:19Z
dc.date.available 2016-11-18T13:42:19Z
dc.date.issued 2016-01
dc.identifier.citation Grover, 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.issn 0378-4738 (Print)
dc.identifier.issn 1816-7950 (Online)
dc.identifier.uri http://hdl.handle.net/10539/21455
dc.description.abstract Mine 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.language.iso en en_ZA
dc.publisher South African Water Research Commission en_ZA
dc.rights Published under a Creative Commons Attribution Licence en_ZA
dc.subject Geochemistry en_ZA
dc.subject Gold en_ZA
dc.subject Metals en_ZA
dc.subject Minerals en_ZA
dc.subject Water quality Elevated concentrations en_ZA
dc.subject Geochemical modelling en_ZA
dc.subject Gold tailings en_ZA
dc.subject Leachable metals en_ZA
dc.subject Metal release en_ZA
dc.subject Mineral phasis en_ZA
dc.subject Modelling techniques en_ZA
dc.subject Reactive minerals en_ZA
dc.subject concentration (composition) en_ZA
dc.subject experimental study en_ZA
dc.subject geochemistry en_ZA
dc.subject leachate en_ZA
dc.subject leaching en_ZA
dc.subject rainwater en_ZA
dc.subject sulfate en_ZA
dc.subject tailings en_ZA
dc.subject water quality en_ZA
dc.title Leachability of metals from gold tailings by rainwater: An experimental and geochemical modelling approach. en_ZA
dc.type Article en_ZA
dc.journal.volume 42 en_ZA
dc.journal.title Water SA en_ZA
dc.description.librarian SP2016 en_ZA
dc.citation.doi 10.4314/wsa.v42i1.05 en_ZA
dc.citation.epage 42 en_ZA
dc.citation.issue 1 en_ZA
dc.citation.spage 38 en_ZA


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