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Geochemical and mineralogical aspects of sulfide mine tailings
(Elsevier, 2015-01-30)
Tailings generated during processing of sulfide ores represent a substantial risk to water resources. The oxidation of sulfide minerals within tailings deposits can generate low-quality water containing elevated concentrations ...
Nickel geochemistry of oil sands fluid petroleum coke deposits, Alberta, Canada
(Canadian Science Publishing, 2018-04-30)
Nickel (Ni) leaching from oil sands petroleum coke can have toxicological effects on aquatic organisms. However, geochemical controls on Ni release, transport and attenuation within coke deposits remains limited. We examined ...
Putative mixotrophic nitrifying-denitrifying Gammaproteobacteria implicated in nitrogen cycling within the ammonia/oxygen transition zone of an oil sands pit Lake
(Frontiers, 2019-10-24)
Anthropogenically-impacted environments offer the opportunity to discover novel microbial species and metabolisms, which may be undetectable in natural systems. Here, a combined metagenomic and geochemical study in Base ...
Selenate removal by zero-valent iron under anoxic conditions: effects of nitrate and sulfate
(Springer Nature, 2019-08-16)
Batch experiments were conducted to examine aqueous Se(VI) removal by zero-valent iron (ZVI) under anoxic conditions in the presence and absence of NO3− and SO42−. Initial concentrations for Se(VI), SO4, and NO3–N of 5 mg ...
Vanadium geochemistry of oil sands fluid petroleum coke
(American Chemical Society, 2017-02-09)
Vanadium has previously been linked to elevated toxicity of leachates derived from oil sands petroleum coke. However, geochemical controls on V mobility within coke deposits remain poorly constrained. Detailed examinations ...