Filters: Tags: Acid Mine Drainage (X) > Extensions: Project (X)
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I conduct field and laboratory research on processes affecting the distribution of inorganic constituents in natural waters. Most of my research focuses on redox sensitive compounds of arsenic, chromium, iron, sulfur, and mercury. I also study conductivity methods and applications for natural waters. Field sites have included the Summitville mine, CO, the Boulder Creek watershed, CO, the Mojave Desert, CA, the Questa mine, NM, and Yellowstone National Park.
The project focuses on the use of analytical techniques that we have developed to support a wide range of studies in water-rock interaction, integrating solid phase mineralogy and elemental chemistry and clay mineralogy into hydrologic and contaminant studies.
Categories: Project;
Tags: Acid Mine Drainage,
Contaminants,
Metals,
Microbiology (Activity and Transport)
Aqueous chemical models have become popular tools for the interpretation of natural water chemistry. Unfortunately, these models have deficiencies because of (1) incorrect or inconsistent thermodynamic data, (2) invalid assumption regarding the equilibrium state, (3) inappropriate or invalidated corrections for nonideality, (4) inadequate expressions for temperature dependence, (5) invalidated limitations for ionic strength, composition and temperature, and (6) lack of data on solid solution solubility. The plethora of models and databases has prompted federal agencies, especially hazardous waste and nuclear waste managers, to request geochemical code validation. Acid mine waters are a major source of water pollution...
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