Understanding the Mechanism of Arsenic Mobilisation and Behaviour in Tailings Dams

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dc.contributor.authorKoomson, Bennetta
dc.contributor.authorAsiam, Elias Kwasi
dc.contributor.authorSkinner, William
dc.contributor.authorAddai-Mensah, Jonas
dc.date.accessioned2024-02-14T11:50:15Z
dc.date.available2024-02-14T11:50:15Z
dc.date.issued2017-06-20
dc.description.abstractThis study was carried out on leaching of tailings at 30 ᵒC and 40 ᵒC. The mineralogical and chemical composition of the tailings material were determined by Quantitative X-Ray Diffractometry (QXRD) and Scanning Electron Microscopy combined with Energy Dispersive Spectroscopy (SEM-EDAX). The study revealed that the tailings contain sulphides (arsenopyrite and pyrite) which can leach to produce arsenic (As) and other ions in solution. The acid released during leaching depends on the temperature of leaching. More acid was produced at higher temperature (40 ᵒC) than lower temperature (30 ᵒC). It was established that arsenic precipitation from solution was higher at higher temperature (40 ᵒC) than lower temperature (30 ᵒC). Mimicking the study in a typical tailings environment, it could be proposed that As mobilisation will be enhanced at lower temperature (30 ᵒC) than at higher temperature (40 ᵒC).
dc.description.sponsorshipFinancial support from the Robert S. McNamara Fellowship, World Bank towards this work is highly appreciated. The authors also wish to thank the Future Industries Institute (FII), University of South Australia (UniSA), Australia for their immense support.
dc.identifier.citationKoomson B., Asiam, E. K, Skinner, W., and Addai-Mensah, J., (2017), “Understanding the Mechanism of Arsenic Mobilisation and Behaviour in Tailings Dams”, Ghana Mining Journal, Vol. 17, No. 1, pp. 85 - 89.
dc.identifier.urihttps://ir.knust.edu.gh/handle/123456789/15470
dc.language.isoen_US
dc.publisherGhana Mining Journal
dc.titleUnderstanding the Mechanism of Arsenic Mobilisation and Behaviour in Tailings Dams
dc.typeArticle
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