peatlands as filters for polluted mine water?—a case study from an uranium-contaminated karst system in south africa—part i: hydrogeological setting and u fluxes

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2011
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Abstract
Located downstream of goldfields of the Witwatersrand basin, the Gerhard Minnebron (GMB) Eye—as major water source for downstream community of some 300,000 people—may be impacted on by mining-related water pollution especially with uranium (U). Containing up to 5 m-thick deposits of peat that is frequently reported to act as a filter for U and other heavy metals, this paper is the first part of a series that aims to quantify the ability of the GMB peatland to act as buffer against current and future U pollution. In a first step, this paper outlines the geohydrological conditions and discusses how deep–level gold mining impacted on the dolomitic aquifers. Subsequently, the potential influx of U into the wetland is estimated and associated sources and pathways analyzed. Finally, a model is proposed explaining the significant differences in degree and dynamics of U observed within a single groundwater compartment.
Reference Key
erasmus2011waterpeatlands Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ewald Erasmus;Frank Winde
Journal Journal of food biochemistry
Year 2011
DOI
10.3390/w3010291
URL
http://www.mdpi.com/2073-4441/3/1/291/
Keywords
peat uranium gold mining compartments karst

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