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Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part III: Quantifying the Hydraulic Filter Component
Water 2011, 3(1), 391-423; doi:10.3390/w3010391
Article

Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part IV: Quantifying the Chemical Filter Component

Received: 12 February 2011; Accepted: 10 March 2011 / Published: 15 March 2011
(This article belongs to the Special Issue Managing Water Resources and Development in a Changing Climate)
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Abstract: This is the final part of a paper series on the ability of peat to filter uranium (U) from mining-polluted water. The focus is on the characterization and site-specific quantification of the chemical component of the filter model introduced in Part II. Based on U levels in different sediment-water systems of the study area that were analyzed in this paper, peat generally displays the highest geochemical U enrichment even though absolute U levels are relatively low. Results of batch experiments suggest that peat removes U from local mine waters exceptionally well, reaching a removal efficiency of close to 100%. However, almost all of the initially sorbed U is released again on subsequent contact with clean dolomitic water. A synoptic summary of the findings presented in Parts I to IV concludes the paper series.
Keywords: peat; uranium; batch experiments; geochemical enrichment; remobilization; dolomitic water; Gerhard Minnebron peatland; karst peat; uranium; batch experiments; geochemical enrichment; remobilization; dolomitic water; Gerhard Minnebron peatland; karst
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Winde, F. Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part IV: Quantifying the Chemical Filter Component. Water 2011, 3, 391-423.

AMA Style

Winde F. Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part IV: Quantifying the Chemical Filter Component. Water. 2011; 3(1):391-423.

Chicago/Turabian Style

Winde, Frank. 2011. "Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part IV: Quantifying the Chemical Filter Component." Water 3, no. 1: 391-423.


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