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 11 of 11 for “"total petroleum hydrocarbon"”.
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Effect of water table fluctuations on petroleum contamination distribution
… the water table level at different rates on petroleum contamination distribution. The experiments were carried out using a two-dimensional sand tank model. The experimental Light Non Aqueous Phase Liquid (LNAPL) was No. 2 Diesel fuel and the experimental media was sand (Sieve 20). A known …
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Sustainable treatment of oil contaminated waste: oil-based mud (OBM) drill cuttings and soil.
… The predominant pollutant from oilfield waste is petroleum hydrocarbons. Some effects of petroleum hydrocarbon contamination in soil include loss of nutrients, reduced fertility, foul odour, flora/fauna imbalance and potential for transport and distribution to other media. Several studies have …
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The Detoxification of Petroleum Contaminated Coastal Plain Sandy Soil Using an Amended Vermicomposting Approach
… treatment approach for detoxifying petroleum hydrocarbon contaminated sandy soil. The bench-scale testing of gasoline and diesel contaminated soil using three test soil vessels and one control soil vessel was performed in a laboratory setting for a six week time period. The control …
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Feasibility of sustainable recycling of drill cutting as additive in flexible base
… organoclay. Lime reduced plasticity and limited total petroleum hydrocarbon (TPH) mobility but had minimal effect on semi-volatile organic compounds (SVOCs) and increased trace metal leaching. Cement significantly improved compressive strength but had limited effect on TPH and SVOCs mobility. Its …
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Bioremediation of petroleum hydrocarbon contaminated soil
The bioremediation of petroleum contaminated soil in large-scale treatment units was studied in conjunction with Sybron Chemicals Inc., Salem, VA. The soil had been previously contaminated and was spiked with additional petroleum. Water with different characteristics was circulated through the soil …
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Rapid identification of oil contaminated soils using visible near infrared diffuse reflectance spectroscopy
Initially, 46 petroleum contaminated and non-contaminated soil samples were collected and scanned using visible near-infrared diffuse reflectance spectroscopy (VisNIR DRS) at three combinations of moisture content and pretreatment. The VisNIR spectra of soil samples were used to predict total …
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Characterization of TPH biodegradation patterns in weathered contaminated soil
Two weathered, petroleum contaminated soils were studied to determine if weathered products are amenable to bioremediation and to determine which TPH (total petroleum hydrocarbon) fractions were degrading during particular time frames under different remediation alternatives. Delineation of …
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Demulsification and recycling of spent oil based drilling fluid as nanofiller for polyamide 6 nanocomposites.
… are global liabilities due to their hazardous hydrocarbon content, which impacts negatively on flora, fauna, and global carbon footprint. The formulation of two demulsifiers to ensure chemically-enhanced phase-separation of this waste into oil, water and solid components was successfully …
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Treatment performance assessments of different wetland mesocosms
… including urban wastewater contaminated with hydrocarbons, treatment performance of vertical-flow constructed wetlands can be hampered by clogging of the substrate media pores of the wetland filters. This clogging usually leads to blockage of filter substrate, progressive diminution of …
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Phytoremediation of Weathered Petroleum in Groundwater by Arroyo Willows in Nutrient Amended On-Site Mesocosms
PHYTOREMEDIATION OF WEATHERED PETROLEUM IN GROUNDWATER BY ARROYO WILLOWS IN NUTRIENT AMENDED ON-SITE MESOCOSMS SARAH BRAGG-FLAVAN A large-scale mesocosm study was conducted to determine if vegetation with willow trees enhances biodegradation and to evaluate the mechanisms of natural biodegradation …
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Evaluation of Impacts Resulting from Home Heating Oil Tank Discharges
… look-back study, we assessed the potential for petroleum vapor intrusion by sampling soil vapor at 25 previously remediated spill sites. Residual contaminants, in particular total petroleum hydrocarbons (TPH) and naphthalene, were detected in approximately 1/3 of the samples. Concentration …