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 5 of 5 for “"low permeability soil"”.
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Hydraulic and Electrokinetic Delivery of Remediants for In-situ Remediation
… study aimed at alleviating back diffusion from low permeability porous media observed at numerous field studies. Experiments were conducted in a two-dimensional sandbox with alternate vertical layers of coarse sand and silt flooded with TCE at aqueous solubility. Electrokinetics (EK) was used to …
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Evaluation of purging methods when sampling for volatile organic compounds from low-yield monitoring Wells
… acted as a "borehole" for the monitoring well. Low-permeability soil in a 25.4 cm diameter stainless screen surrounded the borehole and simulated an aquitard or low-permeability aquifer. This apparatus was placed in a tank filled with chlorobenzene and 1,1,1-Tricholorethane-spiked water. The …
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Distribution of ammonium nitrate as nitrogen containing nutrient for in-situ biodegradation by means of electrokinetics
… over the groundwater surface, and adsorbed onto soil particles. The requirements for the bioremediation process to occur are the availability of microorganisms, a biodegradable pollutant, an electron acceptor, and nutrients. The shortage of nutrients in an available form for the microorganisms is …
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Multi-physics modeling of heat and particle transfer in porous media
… capabilities compared to conventional low-permeability soil installations. The use of saturated high-permeability pea gravel as backfill is shown to increase the effective heat dissipation rate significantly, leading to substantial benefits for underground cable system design and …
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Seismic behaviour of shallow foundations on layered liquefiable soils
… the most damaging<br/>natural hazards. Seismic soil liquefaction is often one of the major sources of<br/>damage and disruptions, and has been observed to severely affect key lifelines.<br/>Settlement and tilting of shallow foundations resting on saturated sandy/silty<br/>soils has been …