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Published in:
2006 | OriginalPaper | Chapter
Simultaneous In-Situ Immobilisation of Uranium and Arsenic by Injectible Iron and Stimulated Autotrophic Sulphate Reduction
Authors : Diana Burghardt, Elisabeth Stiebitz, Kai Knöller, Andrea Kassahun
Published in: Uranium in the Environment
Publisher: Springer Berlin Heidelberg
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The combination of injectible grey cast iron (gcFe) and nano-scale iron (naFe) corrosion with autotrophic sulphate reduction (aSR) for simultaneous U and As immobilisation was investigated in column experiments. NaFe resulted in an intensive corrosion, the formation of a homogenous reactive zone, a distinct aSR and complete U and As immobilisation. At the gcFe column, a particle displacement resulted in the formation of reactive gcFe clusters, which were partly bypassed by the influent groundwater. Nevertheless, the lasting gcFe corrosion caused a complete As, but only partial U immobilization.