Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"indigenous microorganisms"”.
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The biodegradation potential of methanol, benzene, and m-xylene in a saturated subsurface environment
… in situ bioremediation techniques rely on indigenous microorganisms to degrade ground water contaminants; this technique may sometimes include the addition of acclimated bacteria. In this study, soil microcosms were constructed in order to simulate the conditions found in a saturated …
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Laboratory studies of the biodegradation of chemically dispersed oil: effect of droplet size and nutrient amendment
… dispersed oil depends on its biodegradation by indigenous microorganisms, which in turn depends on the concentration of nutrients in water and on the droplet size distribution. Using water from the shorelines of Atlantic City, we placed the water with oil and dispersant inside EPA Baffled Flasks …
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Aerobic Biodegradation of MTBE in Uncontaminated and Gasoline-Contaminated Aquifer Sediments
… of petroleum hydrocarbon compounds influence indigenous microorganisms capable of degrading MTBE.
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The effects of pH on the biodegradation of benzene, toluene, ethylbenzene, m-Xylene in soils
Batch microcosms utilizing indigenous microorganisms were used to examine the effect of soil pH on the biodegradation of benzene, toluene, ethylbenzene, and m-xylene in subsurface soils. The biodegradation potential of both denitrifying and aerobic respiring microorganisms were assessed. …
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An investigation of bioremediation for the conservation of petroleum-contaminated stone monuments
… bioventing, which is the use of air to stimulate indigenous microorganisms that have the ability to transform petroleum hydrocarbons into harmless by-products. Three types of limestone (grey-, marly-, and sandy-) were shown to be significantly weakened by a non-immiscible mixture of water and …
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Mesophilic fermentative hydrogen production from sewage biosolids
… The feedstock also contained high levels of indigenous microorganisms and a high ratio of insoluble to soluble carbohydrate.<br/><br/>To address these challenges, a novel reactor design using wide bore tubing and computer controlled pumping equipment was successfully used to construct a …
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Microbial Ecology of Subsurface Oil Sands Deposits in Northern Alberta, Canada
… of low molecular weight hydrocarbons by indigenous microorganisms has resulted in an enrichment of high molecular weight hydrocarbons known as bitumen. This is an extreme environment characterized by low water and nutrient availability, thereby resulting in low microbial biomass. The …
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Characterization of a Creosote-Contaminated Tie Yard Site and the Effects of Phytoremediation
… prolonged periods of time and oxygen transfer to indigenous microorganisms was likely limited. The root structures of fescue and rye grasses were neither dense nor complex enough to promote phytoremediation effects. PAH reductions were generally greater for constituents with higher aqueous …