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Application of high-resolution microscopy methods to the analysis of fine-grained and amorphous treatment sludges

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dc.contributor.author Martin, Alan
dc.contributor.author Fawcett, Skya
dc.contributor.author Kulczycki, Ezra
dc.contributor.author Loomer, Diana
dc.contributor.author Al, Tom
dc.contributor.author Rollo, Andrew
dc.date.accessioned 2011-11-04T19:49:15Z
dc.date.available 2011-11-04T19:49:15Z
dc.date.issued 2011-11
dc.identifier.uri http://hdl.handle.net/2429/38779
dc.description.abstract Lime addition is a common method for the treatment of acid mine drainage (AMD) whereby neutralization promotes a reduction in acidity and the precipitation of metals as voluminous sludges that may contain gypsum, calcite and a spectrum of other phases. Due to the extremely fine-grained and often amorphous (i.e., non crystalline) character of sludge solids, the composition of these materials has been difficult to elucidate. Traditional methods, such as X-Ray Diffraction (XRD) and optical microscopy, have proved largely ineffective. In order to provide further insight into the solid-phase characterization of neutralization sludges, samples from mine sites across Canada were examined by high resolution microscopy techniques, including Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), and X-ray Absorption Spectroscopy (XAS). The results revealed sludge-specific host phases, including relatively pure Feoxyhydroxide, amorphous Mg-Al-(Fe) hydroxysulphate and amorphous metal hydroxides. The data indicate that the nature of metal phase associations is strongly dependent on AMD influent composition.[All papers were considered for technical and language appropriateness by the organizing committee.] en
dc.language.iso eng en
dc.relation.ispartof Tailings and Mine Waste Conference 2011: Vancouver, Canada en
dc.relation.ispartofseries Tailings and Mine Waste 2011: Vancouver, Canada en
dc.title Application of high-resolution microscopy methods to the analysis of fine-grained and amorphous treatment sludges en
dc.type Text en
dc.type.text Conference Paper en
dc.description.affiliation Non UBC en
dc.description.reviewstatus Unreviewed en
dc.description.scholarlevel Other en

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