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Full-Text Articles in Physical Sciences and Mathematics
Kingston Fossil Plant Ash Spill & Corbicula Fluminea: Assessing The Effectiveness Of An Invasive Bivalve As A Biomonitor Of Coal Ash Pollution, Hannah Ruth Johnson
Kingston Fossil Plant Ash Spill & Corbicula Fluminea: Assessing The Effectiveness Of An Invasive Bivalve As A Biomonitor Of Coal Ash Pollution, Hannah Ruth Johnson
Masters Theses
The goal of this study was to assess the effectiveness of using the invasive Asian clam, Corbicula fluminea, as a biomonitor for trace element bioavailability in the river system affected by the Kingston Fossil Plant coal ash spill of December 2008. I collected Corbicula from five different sites (n=20 per site) and analyzed both the soft body tissues and shells via inductively coupled plasma-optical emission spectroscopy (ICP-OES). I then compared the concentrations of a suite of elements in Corbicula fluminea among sampling sites and examined the correlation between soft tissue and shell concentrations. The multiple analysis of variance (MANOVA) …
Linking Stream Sediment Metrics And Aquatic Macroinvertebrate Status In East Tennessee Streams, Grant Thomas Lynch
Linking Stream Sediment Metrics And Aquatic Macroinvertebrate Status In East Tennessee Streams, Grant Thomas Lynch
Masters Theses
Excess sediment is one of the leading causes of impairment of the rivers and streams of Tennessee and in the United States. Sediment acts as a pollutant by degrading the quality of habitat for fish and other aquatic life. The Tennessee Department of Environment and Conservation (TDEC) currently assesses the quality of streams in Tennessee by conducting benthic macroinvertebrate surveys. These surveys use seven biometrics to calculate Tennessee Macroinvertebrate Index (TMI) scores. This method is well tested and reliable, but it has not been shown to directly link changes in stream sediment characteristics to macroinvertebrate status. Finding a stream sediment …
Adsorption Of Antimony By Birnessite And The Impact Of Antimony On The Electrostatic Surface Properties Of Variable-Charge Soil Minerals, Kalyn Alaine Vergeer
Adsorption Of Antimony By Birnessite And The Impact Of Antimony On The Electrostatic Surface Properties Of Variable-Charge Soil Minerals, Kalyn Alaine Vergeer
Masters Theses
Antimony (Sb) is a toxin that can be found in high concentrations in the soil due to anthropogenic sources. Antimony exists in soil as Sb(V) in the monovalent antimonate hydroxyanion. The adsorption mechanisms of Sb(V) are not well-characterized. The objective of this study was to further elucidate Sb(V) adsorption mechanisms by examining the impact of adsorption on surface charging characteristics of gibbsite, goethite, birnessite, and kaolinite. Also examined was Sb(V), SO4 [sulfate], and PO4 [phosphate] adsorption by birnessite. Electrophoretic mobility and potentiometric titrations were employed to examine the ζ-potential [zeta-potential] and net proton surface charge density as a …