Metal sulphates are one of the major contributors to acid mine drainage (AMD) or acid rock
drainage (ARD). AMD occurs by the oxidation of metal sulphides. Sulphides produce …

Manganese (Mn) is the third most abundant transition metal in the Earth's crust. Decades of
increasing worldwide mining activities have inevitably led to the release of large amounts of …

Hydrology is a relatively young science, which has developed gradually out of the hydraulic
expedients which underpin much of civil engineering practice. Indeed, the emergence of …

Microorganisms are intimately involved in metal biogeochemistry with a variety of processes
determining mobility, and therefore, bioavailability. The balance between mobilization and …

Page 1 E&MS TN295 .U4 no.9389 PASSIVE TREATMENT OF COAL MINE DRAINAGE Page 2
Page 3 THE PENNSYLVANIA STATE UNIVERSITY LIBRARIES Page 4 1 Page 5 US C 9389 …

This review presents the current state of development of the passive mine water treatment
technologies. The background of passive treatment is reviewed and the chemical and …

Microorganisms play important roles in the environmental fate of toxic metals with a
multiplicity of physico-chemical and biological mechanisms effecting transformations …

Mine wastes have been generated for several centuries, and mining activity has accelerated
significantly during the 20th century. The mine wastes constitute a potential source of …

Mine drainage waters vary considerably in the range and concentration of heavy metals they
contain. Besides iron, manganese is frequently present at elevated concentrations in waters …

A 0.39 ha constructed wetland designed with 9 cells, including two anaerobic cells that were
to stimulate dissimilatory sulfate reduction, was evaluated for its effect on water quality of a …