Microbially driven acidity generation in a tailings lake

ABSTRACT In situ characterization and geochemical modelling of acid generation in a mine tailings lake (Moose Lake, ON, Canada) over a 2‐year period (2001–2002; surficial lake pyrrhotite slurry disposal initiated in 2002) show that bacteria significantly impact acidity behaviour through particle‐associated S oxidation and that they do so under conditions that differ from those controlling abiotic pathways. Seasonal epilimnetic pH decreases …