Date of Award


Degree Name

Master of Science


Geological and Environmental Sciences

First Advisor

Dr. Alan E. Kehew

Second Advisor

Dr. Richard Passero

Third Advisor

Dr. James A. Howell

Access Setting

Masters Thesis-Open Access


High iron concentrations in the leachate plume of the KL Landfill in Kalamazoo County, Michigan, persist in the presence of detectable hydrogen-sulfide. Under these conditions iron-sulfide minerals are highly oversaturated and should be precipitating. Calculations performed by the chemical equilibrium model WATEQF indicate over-saturation of selected iron-oxides, siderite, and iron-sulfides. Semilog plots of iron concentration versus time of exposure to air demonstrate retarded precipitation of ferric hydroxide, and analytical techniques of ion chromatography, Fourier transform IR spectrophotometry (FTIR), and UV-Visible spectrophotometry have yielded results which indicate that organic complexing of ferrous iron plays a significant role in the mobility of iron detected in the KL Landfill leachate plume.

Included in

Hydrology Commons