Browsing by Subject "Pantex Plant (U.S.)"
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Item Aerobic biodegradation of HMX (Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine) with a supplemental study of RDX (Hexahydro-1,3,5-Trinitro-1,3,5-Triazine)(Texas Tech University, 1998-05) Harkins, Victoria A. R.The Pantex facility near Amarillo, Texas, has soil and groundwater contaminated with differing combinations of high explosives (HEs), solvents, and metals. This study is concerned with the treatment of one HE, HMX in produced groundwater. Several physical and chemical treatment schemes for the treatment of HMX have been successful at other sites. These treatments include granular activated carbon adsorption, ultraviolet light radiation in combination with ozone, and alkaline hydrolysis. Successful biological treatment of HMX has been limited to anaerobic environments. Aerobic biodegradation is more desirable because of low capital and operation costs compared to those normally associated with anaerobic treatment. The objective of this work was to identify combinations of microbial consortia and amendments capable of aerobically biodegrading HMX. Once a treatment scheme was identified to breakdown HMX, a supplemental study was undertaken to determine the effects the same conditions would have on RDX, another HE contaminant of concem at Pantex.Item Biodiversity associated with active and extirpated black-tailed prairie dog colonies(Texas Tech University, 2001-12) McCaffrey, Rachel ElizabethNot availableItem Chromium contaminant mobility in the subsurface soils at the Pantex Plant(Texas Tech University, 1995-05) Laun, Scot GeorgeNot availableItem In-situ degradation of high explosives(Texas Tech University, 1999-08) Brown, Justin HeathThe purpose of this research is to develop an in situ method to biodegrade high explosives in the vadose zone. The research project involves the construction of an experimental field site to force an anaerobic treatment zone and thus stimulate indigenous microorganisms to biodegrade the HE. The desired level of treatment is to reduce the HE concentrations to below the RRS2 values.Item Laboratory studies indicating the potential for bioremediation of high explosives in soil at the Pantex Plant(Texas Tech University, 1998-12) Medlock, Walter NThe main purpose of this thesis is to provide information in support ofthe field study. In May of 1998, eight, 30-ft wells were constmcted at the field study site to facilitate the gas injection and extraction procedure. The core samples from these wells were preserved and transported to Texas Tech University where they were analyzed with the following objectives in mind: (1) delineate the extent of HE contamination at the field study site, (2) determine if microbial (metabolic) activity is present in the soil, (3) enumerate the anaerobic microbial population, and (4) examine the relationships among HE concentration, metabolic activity, and microbial population.Item Perched aquifer tracer test, Pantex Plant, Amarillo, Texas(Texas Tech University, 2002-05) Black, Sara ANot available