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West Virginia Coal Fly Ash Sorption Of Btex, Jerome C. Wentz
West Virginia Coal Fly Ash Sorption Of Btex, Jerome C. Wentz
Graduate Theses, Dissertations, and Problem Reports
Sorption is a term used in the environmental field to describe how chemical contaminants in soil and groundwater adhere to solid particles such as: clay, peat and activated carbon for the purposes of remediation, fate and transport. A potential surrogate for sorption of chemical contaminants in groundwater is coal fly ash. Batch test experiments have demonstrated coal fly ash's ability to remove hydrophobic, organic petroleum contaminants including: benzene, toluene, ethylbenzene and xylenes (BTEX) in groundwater through the processes of sorption. Coal fly ash is a byproduct material of coal fired power plants that is often disposed of on-site or at …
Local And Regional Impairment Of Fish Assemblages In A Mined Appalachian Watershed, Jason Gregory Freund
Local And Regional Impairment Of Fish Assemblages In A Mined Appalachian Watershed, Jason Gregory Freund
Graduate Theses, Dissertations, and Problem Reports
I used the Cheat River watershed, West Virginia, as a model system to examine the regional impacts of extensive localized stream impairment. Acid mine drainage (AMD) in the Cheat River watershed provided a unique opportunity to test the hypothesis that regional biological condition can be impacted through multiple local sources of degradation. Acid mine drainage is the result of the interaction among pyrite-rich coal, oxygen, and water. This interaction produces a solution that is generally low in pH and buffering capacity and high in heavy metals and sulfate and is toxic to aquatic life. Acid mine drainage also has the …
Sources And Ecological Consequences Of Deposited And Suspended Sediments In Small Tributaries Of The Upper Elk River Watershed, West Virginia, Cynthia Louise Sanders
Sources And Ecological Consequences Of Deposited And Suspended Sediments In Small Tributaries Of The Upper Elk River Watershed, West Virginia, Cynthia Louise Sanders
Graduate Theses, Dissertations, and Problem Reports
Deposited and suspended sediments were sampled in small tributaries of the upper Elk River watershed to determine if differences exist in sediment transport and deposition based on land management activities of low disturbance, development, or timber harvesting. Brook trout (Salvelinus fontinalis ) were sampled to determine if a negative relationship existed between populations and deposited or suspended sediments. There were no significant relationships in deposited sediments among land use yet timber harvest and developed lands had significantly higher transported sediments than low disturbance lands. There were no significant relationships between brook trout populations and deposited sediments. However, a slight negative …
Modeled Sulfur Dioxide Exposure From A Proposed Coal Fired Power Plant, Using Geographic Information Systems And Air Dispersion Modeling, Steven Jason Hutchens
Modeled Sulfur Dioxide Exposure From A Proposed Coal Fired Power Plant, Using Geographic Information Systems And Air Dispersion Modeling, Steven Jason Hutchens
Graduate Theses, Dissertations, and Problem Reports
This study models the contribution of sulfur dioxide (SO 2) from a proposed coal fired power plant (CFPP) above existing ambient levels. Most vulnerable to SO2 exposure appear to be the elderly, young, and diseased, here identified as sensitive receptors (SR). Epidemiologic studies suggest 260mug/m3 as the lowest toxic threshold for SR exposure. It was hypothesized that added SO2 concentrations to existing ambient levels at regional sensitive receptors, under worst case scenario, would not exceed 260mug/m3.;The methods used identify and quantify density locations of localized SR using geographic information systems. Modeled worst case air dispersion concentration exposure to localized SR …
Electrochemical Detection Of Mercury, Cadmium, Lead, And Copper Using Boron -Doped Diamond Electrodes, Carol M. Babyak
Electrochemical Detection Of Mercury, Cadmium, Lead, And Copper Using Boron -Doped Diamond Electrodes, Carol M. Babyak
Graduate Theses, Dissertations, and Problem Reports
Anodic stripping voltammetry (ASV) and boron-doped diamond (BDD) electrodes were used to detect mercury, cadmium, lead, and copper at low part-per-billion (ppb) concentrations. Two types of BDD electrodes were used, free-standing polished electrodes, and unpolished BDD films grown on silicon substrates. The electrochemical detection of mercury was difficult in all of the matrices investigated: nitrate, chloride, thiocyanate, phosphate, and sulfate. Precipitation of mercuric or mercurous salts on the electrode surface was the likely cause. The addition of an auxiliary element improved the detection of mercury. The detection of cadmium and lead was more straightforward. The addition of copper improved the …