Antimony leaching and chemical species analyses in an industrial solid waste: Surface and bulk speciation using ToF-SIMS and XANES

Kappen, P, Ferrando-Miguel, G, Reichman, S, Innes, L, Welter, E and Pigram, P 2017, 'Antimony leaching and chemical species analyses in an industrial solid waste: Surface and bulk speciation using ToF-SIMS and XANES', Journal of Hazardous Materials, vol. 329, pp. 131-140.


Document type: Journal Article
Collection: Journal Articles

Title Antimony leaching and chemical species analyses in an industrial solid waste: Surface and bulk speciation using ToF-SIMS and XANES
Author(s) Kappen, P
Ferrando-Miguel, G
Reichman, S
Innes, L
Welter, E
Pigram, P
Year 2017
Journal name Journal of Hazardous Materials
Volume number 329
Start page 131
End page 140
Total pages 10
Publisher Elsevier
Abstract tThe surface chemistry and bulk chemical speciation of solid industrial wastes containing 8 wt-% antimony(Sb) were investigated using synchrotron X-ray Absorption Near Edge Structure (XANES) and Time-of-Flight Ion Secondary Mass Spectrometry (ToF-SIMS). Leaching experiments were conducted in order tobetter understand the behavior of Sb in waste streams and to inform regulatory management of antimony-containing wastes. The experiments also demonstrate how a combination of XANES and ToF-SIMS addsvalue to the field of waste investigations. Leaching treatments (acid and base) were performed at asynchrotron over 24 h time periods. Surface analyses of the wastes before leaching showed the presenceof Sb associated with S and O. Bulk analyses revealed Sb to be present, primarily, as trivalent sulfidespecies. Both acid and base leaching did not change the antimony speciation on the solid. Leachingtransferred about 1% of the total Sb into solution where Sb was found to be present as Sb(V). XANESdata showed similarities between leachate and FeSbO4. During base leaching, the Sb content in solutiongradually increased over time, and potential desorption mechanisms are discussed.
Subject Environmental Management
Environmental Engineering not elsewhere classified
Keyword(s) Antimony
Industrial waste
ToF-SIMS
XANES
Synchrotron
heavy metal
speciation
environmental chemistry
DOI - identifier 10.1016/j.jhazmat.2017.01.022
Copyright notice © 2017 Elesvier B.V. All rights reserved.
ISSN 0304-3894
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