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Instruments / Technical Area	Publication Details	Published	Actions
I18-Microfocus Spectroscopy	Origin and fate of Vanadium in the Hazeltine Creek Catchment following the 2014 Mount Polley mine tailings spill, British Columbia, Canada Karen A. Hudson-edwards , Patrick Byrne , Graham Bird , Paul A. Brewer , Ian T. Burke , Heather E. Jamieson , Mark G. Macklin , Richard D. Williams Environmental Science & Technology DOI: 10.1021/acs.est.8b06391 Diamond Proposal Number(s): [15046] Show Abstract ▼ Abstract: Results are presented from the analysis of aqueous and solid-phase V speciation within samples collected from the Hazeltine Creek catchment affected by the August 2014 Mount Polley mine tailings dam failure, Canada. Electron microprobe and XANES analysis found that V is present as V3+ substituted into magnetite, and V3+ and V4+ substituted into titanite, both of which occur in the spilled Mount Polley tailings. Secondary Fe oxyhydroxides forming in inflow waters and on creek beds have V K-edge XANES spectra exhibiting E½ positions and pre-edge features consistent with the presence of V5+ species, suggesting sorption of this species on these secondary phases. PHREEQC modelling suggests that the stream waters mostly contain V5+, and the inflow and pore waters contain a mixture of V3+ and V5+. These data, and stream, inflow and pore water chemical data, suggest that dissolution of V(III)-bearing magnetite, V(III,IV)-bearing titanite, V(V)-bearing Fe(-Al-Si-Mn) oxhydroxides, V-bearing Al(OH)3 and/or -clay minerals may have occurred. In the circumneutral pH environment of Hazeltine Creek elevated V concentrations are likely naturally attenuated by formation of V(V)-bearing secondary Fe oxyhydroxide, Al(OH)3 or clay mineral colloids, suggesting that the V is not bioavailable. A conceptual model is presented describing the origin and fate of V in Hazeltine Creek that is applicable to other river systems.	Mar 2019

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I18-Microfocus Spectroscopy

Origin and fate of Vanadium in the Hazeltine Creek Catchment following the 2014 Mount Polley mine tailings spill, British Columbia, Canada

Karen A. Hudson-edwards , Patrick Byrne , Graham Bird , Paul A. Brewer , Ian T. Burke , Heather E. Jamieson , Mark G. Macklin , Richard D. Williams

Environmental Science & Technology

DOI: 10.1021/acs.est.8b06391

Diamond Proposal Number(s): [15046]

Show Abstract ▼

Mar 2019