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Articles 1 - 5 of 5
Full-Text Articles in Environmental Engineering
Effects Of A Beaver Pond In Southwestern Montana On Metals Concentration And Loads, William J. Drury, Martin Lorenzo
Effects Of A Beaver Pond In Southwestern Montana On Metals Concentration And Loads, William J. Drury, Martin Lorenzo
Environmental Engineering
A 400-m2 beaver pond on Cabbage Gulch (Deer Lodge County, MT) was investigated for its retention of total recoverable (TR) and dissolved arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), zinc (Zn), and total suspended solids (TSS) during three storm water runoff events in the summer of 2013. Water samples were collected and flow rates were measured at monitoring stations above and below the pond. Decreases in TR metals concentrations were -17 percent for As (that is, As concentrations increased), 10 percent for Cu, 7 percent for Pb, and 27 percent for Zn. Total recoverable metals retained in the …
Aqueous Zinc Removal Using Nanoparticle Treated Natural Fibers, Daniel Zieske
Aqueous Zinc Removal Using Nanoparticle Treated Natural Fibers, Daniel Zieske
Graduate Theses & Non-Theses
The objective of this thesis research is to evaluate and enhance a recently developed water treatment technology. The technology was previously successful in removing airborne mercury from coal fired power plant flue gas, and has since been demonstrated to remove aqueous copper and cadmium. The technology uses natural coconut fibers impregnated with metal nanoparticles using a proprietary technique. A series of batch tests determined that both the treated and untreated natural fibers were capable of removing over 90% of aqueous zinc from a synthetic solution made by dissolving ZnCl2 salts in deionized water. Further testing with a bench scale continuous …
Nitrogen Removal In Biological Wastewater Treatment Plant, Courtney Greyn
Nitrogen Removal In Biological Wastewater Treatment Plant, Courtney Greyn
Graduate Theses & Non-Theses
Wastewater treatment and disposal is an integral part of mining operations. Water must be carefully managed to prevent waterborne contaminants from entering the surrounding environment. Mining companies rely on regulatory compliance and social acceptance to continue operations. The Stillwater Mining Company operates two underground mines in southern Montana, the Stillwater Mine and the East Boulder Mine, to extract platinum group metals from the J-M Reef geological formation. The East Boulder Mine operates an on-site wastewater treatment plant to remove waterborne contaminants from the water pumped to the surface from the underground mining operations. The main contaminant of concern at the …
An Environmental And Hydrogeological Investigation In The South Hebgen Basin, Montana, Joe Schmechel
An Environmental And Hydrogeological Investigation In The South Hebgen Basin, Montana, Joe Schmechel
Graduate Theses & Non-Theses
This study was conducted to develop a hydrogeologic framework, and address water quality concerns in the South Hebgen Basin, near the town of West Yellowstone, Montana. The main goals of this research were to: (1) Develop a conceptual model of groundwater flow within the confined aquifer. (2) Use naturally occurring chemical tracers to investigate the confined aquifer’s extent and the connectivity. (3) Identify the influence of geothermal features on water chemistry. (4) Identify water quality issues related to arsenic (As) and fluoride (F-). Long-term static water elevation plots and surface water flow, combined with water ion chemistry were …
Identification Of Non-Point Sources Of Nutrient Loading And Proposed Best Management Practices For Browns Gulch, Silver Bow County, Mt, Sarah Hamblock
Identification Of Non-Point Sources Of Nutrient Loading And Proposed Best Management Practices For Browns Gulch, Silver Bow County, Mt, Sarah Hamblock
Graduate Theses & Non-Theses
Nutrients are essential to support stream ecosystems, however, if present in excess may lead to growth of algal blooms, excessive aquatic weeds, and alteration of natural aquatic ecosystems. Silver Bow Creek (SBC), the headwater stream of the Clark Fork River, is listed as impaired for nutrients (total nitrogen (TN) and total phosphorus (TP)), by the Montana Department of Environmental Quality. Browns Gulch is a major tributary to SBC, and drains agricultural and forested lands. To meet target nutrient TMDL concentrations in SBC, the tributary load inputs of TN and TP must be reduced by 93% in Browns Gulch. To identify …