Scholarship & Research
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Item Investigation of microbially induced carbonate precipitation for mitigation of acid mine drainage from coal mining waste(Montana State University - Bozeman, College of Engineering, 2023) Delwiche, Jenna Anne; Chairperson, Graduate Committee: Ellen G. Lauchnor; Adrienne J. Phillips (co-chair); This is a manuscript style paper that includes co-authored chapters.Acid Mine Drainage (AMD) is a serious environmental concern associated with coal mining. Many of the existing methods for addressing AMD are costly and focus on clean-up rather than prevention. In this study, the feasibility of using microbially induced carbonate precipitation (MICP) as an alternative method for mitigating environmental impacts from coal mining waste rock was investigated using laboratory scale experiments. Flow-through column testing showed that MICP can be used to create a calcium carbonate coating on coal waste rock, acting as a barrier between the rock and water. This treatment increased leachate pH, and microscopic inspection indicated that the presence of live bacteria was important for creating a durable coating. The MICP treatment decreased concentrations of heavy metals such as aluminum, barium, beryllium, copper, nickel, zinc, and iron in the leachate, but increased concentrations of vanadium, selenium, molybdenum, uranium, and arsenic. These results indicate that MICP may be an effective technique for mitigating AMD, but additional laboratory and field testing is needed to assess the feasibility of this treatment technology.Item A review of substrates and vegetation in wetlands constructed to treat acid mine drainage(Montana State University - Bozeman, 1995) Tickner, Darcy Nina; Chairperson, Graduate Committee: Douglas J. DollhopfItem Biocatalyzed partial demineralization of acidic metal sulfate solutions(Montana State University - Bozeman, College of Engineering, 1989) Hunter, Robert MichaelItem Evaluation of selected phosphate sources for the control of acid production from pyritic coal overburden(Montana State University - Bozeman, College of Agriculture, 1990) Spotts, EdwardItem Geochemical characteristics of a waste rock repository at a western gold mine(Montana State University - Bozeman, College of Agriculture, 1997) Outlaw, Jason DwayneItem Hydrology of a waste rock repository capping system at the Zortman Mine(Montana State University - Bozeman, College of Agriculture, 1997) Warnemuende, E. A.Item Hydrologic evaluation of tailings covers at the Golden Sunlight Mine(Montana State University - Bozeman, College of Agriculture, 1994) Strong, Murray RandalItem Effects of supplemental organic carbon addition on sulfate reduction and zinc sulfide precipitation using microcosm and bench-scale constructed wetlands in cold climate regions(Montana State University - Bozeman, College of Engineering, 2001) Borden, Deborah JeanItem Effects of acid mine pollution on the benthic macro-invertebrates of the Dry Fork of Belt Creek drainage(Montana State University - Bozeman, College of Letters & Science, 1974) Vandenberg, Raymond JamesItem Sulfate reduction and carbon oxidation in model constructed wetlands for metal remediation(Montana State University - Bozeman, College of Engineering, 2000) Sturm, Jason Richard