Environmental Science and Management (ESM)
Bayer School of Natural and Environmental Sciences
mine drainage, remediation, wetlands, manganese, sulfate, microbe
The legacy of coal mining in Appalachia has left many watersheds impacted by abandoned mine drainage. The drainage degrades streams, groundwater and habitats with acidity and toxic heavy metals. The Lowber Passive Remediation System has been in operation since 2004 to remediate high amounts of dissolved Fe, SO4, Al, and Mn. The site consists of six settling ponds and an extensive wetlands at the finish. This study investigated the resolubilization of Fe and Mn in the wetlands and the role of bacteria in resolubilization. During three seasons, field measurements of water quality and lab analysis of Fe, Mn, and SO4 were conducted to examine correlations between the parameters. Fe levels were consistently lower than Mn. Mn spikes peaked in the fall and were predominant in more vegetated areas, and at high sulfate levels. In vitro, bacteria from Lowber could induce metal spikes that mimic what happens in the environment.
Cochran, E. (2019). The Effects of Constructed Wetlands on metal Solubilization and Bioavailability in Passive Mine Remediation (Master's thesis, Duquesne University). Retrieved from https://dsc.duq.edu/etd/1782
Available for download on Sunday, May 10, 2020
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