Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes

dc.contributor.authorHesketh, A H
dc.contributor.authorBroadhurst J L
dc.contributor.authorBryan, C G
dc.contributor.authorvan Hille, R P
dc.contributor.authorHarrison, S T L  
dc.date.accessioned2016-08-19T11:16:06Z
dc.date.available2016-08-19T11:16:06Z
dc.date.issued2010
dc.date.updated2016-08-19T09:42:40Z
dc.description.abstractAcid mine drainage (AMD) is formed by the microbially catalysed oxidation of sulfide minerals on exposure to moisture and air. It results in the ongoing contamination of water streams with acidity, sulfate and metal ions in solution, limiting subsequent use of the water without its remediation. AMD prevention is a key requirement for meeting mine closure standards and AMD prediction plays an integral role in waste management and AMD prevention. However, both the static and kinetic tests used currently have shortfalls, including only providing a worst case scenario, providing limited kinetic data, particularly with respect to microbial catalysis or requiring an excessive time frame for the provision of useful data. In this study, we review biological tests reported to predict AMD generation potential and propose an extension to these tests in the form of a biokinetic test. The proposed test provides information on the potential and likelihood of acidification upon microbial colonisation as well as the relative kinetics of the acid-consuming and acid-producing reactions. This provides more meaningful data than static tests, within a reasonable timeframe. Experiments performed to evaluate the biokinetic test, using copper sulfide flotation tailings, show results consistent with those of traditional static tests. However, these also provide additional kinetic information that could help to inform management strategies.en_ZA
dc.identifierhttp://dx.doi.org/10.1016/j.hydromet.2010.01.015
dc.identifier.apacitationHesketh, A. H., , Bryan, C. G., van Hille, R. P., & (2010). Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes. <i>Hydrometallurgy</i>, http://hdl.handle.net/11427/21354en_ZA
dc.identifier.chicagocitationHesketh, A H, , C G Bryan, R P van Hille, and "Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes." <i>Hydrometallurgy</i> (2010) http://hdl.handle.net/11427/21354en_ZA
dc.identifier.citationHesketh, A. H., Broadhurst, J. L., Bryan, C. G., Van Hille, R. P., & Harrison, S. T. L. (2010). Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes. Hydrometallurgy, 104(3), 459-464.en_ZA
dc.identifier.issn0304-386Xen_ZA
dc.identifier.ris TY - Journal Article AU - Hesketh, A H AU - Broadhurst J L AU - Bryan, C G AU - van Hille, R P AU - Harrison, S T L   AB - Acid mine drainage (AMD) is formed by the microbially catalysed oxidation of sulfide minerals on exposure to moisture and air. It results in the ongoing contamination of water streams with acidity, sulfate and metal ions in solution, limiting subsequent use of the water without its remediation. AMD prevention is a key requirement for meeting mine closure standards and AMD prediction plays an integral role in waste management and AMD prevention. However, both the static and kinetic tests used currently have shortfalls, including only providing a worst case scenario, providing limited kinetic data, particularly with respect to microbial catalysis or requiring an excessive time frame for the provision of useful data. In this study, we review biological tests reported to predict AMD generation potential and propose an extension to these tests in the form of a biokinetic test. The proposed test provides information on the potential and likelihood of acidification upon microbial colonisation as well as the relative kinetics of the acid-consuming and acid-producing reactions. This provides more meaningful data than static tests, within a reasonable timeframe. Experiments performed to evaluate the biokinetic test, using copper sulfide flotation tailings, show results consistent with those of traditional static tests. However, these also provide additional kinetic information that could help to inform management strategies. DA - 2010 DB - OpenUCT DP - University of Cape Town J1 - Hydrometallurgy LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 SM - 0304-386X T1 - Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes TI - Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes UR - http://hdl.handle.net/11427/21354 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21354
dc.identifier.vancouvercitationHesketh AH, , Bryan CG, van Hille RP, . Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes. Hydrometallurgy. 2010; http://hdl.handle.net/11427/21354.en_ZA
dc.languageengen_ZA
dc.publisherElsevieren_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_ZA
dc.sourceHydrometallurgyen_ZA
dc.source.urihttp://www.journals.elsevier.com/hydrometallurgy
dc.subject.otherAcid mine drainage
dc.subject.otherPrediction test
dc.subject.otherSulfide tailings
dc.titleBiokinetic test for the characterisation of AMD generation potential of sulfide mineral wastesen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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