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 20 of 1567 for “"contaminated"”.
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Wastewater Treatment of Contaminated Aqueous Leachate
Until recently the common perception, especially in the western world, was that water was an infinite resource. There has been, however, a dramatic increase in the usage and pollution of water and a corresponding need to conserve, treat and re-use the resource. Water quality and scarcity are major …
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Solidification and Stabilization of Contaminated Soil
… promise in dealing with the clean up of soils contaminated with pollutants listed as Hazardous Substances under Resource Conservation and Recovery Act (RCRA). The site discussed in this paper was contaminated with Naphthalene, heavy metals and other VOCs. In order to find an effective …
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Mechanisms of flashover of contaminated insulators.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1974. Sc.D.
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Contaminated sediment transport in Boston Harbor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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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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Regulating contaminated land in order to identify, manage and cause the rehabilitation of contaminated land: a review of the legislative adequacy of South Africa's contaminated land regime
… goals and well-being of its population. Contaminated land impacts not only the environment, but it causes socio-economic impacts. In 2009, the National Environmental Management: Waste Act, 2008 (Act No. 59 of 2008) was enacted with a dedicated contaminated land regime (Part 8 of that …
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Innovative technologies of phytoremediation for contaminated soils
… many techniques available for the remediation of contaminated soils, that to date represent a constantly evolving field, absorbing a lot of resources for research and development. Phytoremediation is a technique that uses plants to clean up metals and other contaminants from the soil or to make …
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Chemical performance of cement stabilised contaminated clay
Urban demand has increased the need to redevelop contaminated land. New legislation for land management has actively discouraged previously acceptable dig and dump practices. This has encouraged in-situ remediation approaches, for which stabilisation / solidification (S/S) is particularly suitable …
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Chlorocarbon transport out of contaminated soil particles
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1994.
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Phytoremediation Mechanisms of a Creosote-Contaminated Site
In 1990, creosote contamination was discovered at the location of a railroad tie treatment facility active in the 1950s until 1973. In 1997, a phytoremediation field study was implemented with the planting of 1,026 hybrid poplar trees and 36 cells of vegetated and unvegetated grass and legume …
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Enhanced petroleum-contaminated soil bioremediation by plants
A petroleum-contaminated soil remediation study was conducted in a greenhouse. The system consisted of 36 pots, 12 were vegetated with squash, 12 were vegetated with fescue grass and the last 12 units served as unvegetated controls. For each group, three treatments were applied, 1) the addition of …
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Mechanisms of metal release from contaminated coastal sediments
The fate of trace metals in contaminated coastal sediments is poorly understood, yet critical for effective coastal management. The aim of this thesis is to investigate and quantify the mechanisms leading to the release of silver, lead and copper across the sediment-water interface. Two contrasting …
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Contaminated Sweeping Langmuir Probes on Sounding Rocket Platforms
… Circuit Emphasis, is used to simulate a contaminated Sweeping Langmuir Probe onboard a sounding rocket. The results are used to characterize regimes of contamination effects and assess the reliability of data analysis techniques for all reasonable contamination layer properties. This work …
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Assessing the environmental risks associated with contaminated sites
A risk assessment strategy considering the impact of chemicals on the whole ecosystem has been developed in order to create a sound and useful method for quantifying and comparing global risks posed by the main different hazardous chemicals found in the environment. This index, called the …
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The remediation of tributyltin-contaminated dredgins and waters
… cost-effective remediation technologies for TBT-contaminated dredged materials. For this purpose, analytical methods were developed for sediments and sediment leachates.<br/>For the sediments, a triple extraction followed by derivatisation and measurement by gas chromatography with pulsed flame …
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Biogeophysical approaches to monitoring contaminated and restored sites
… to biogeochemical transformations to monitoring contaminated and degraded sites. These approaches are of interest as they have low cost, inexpensive, non-intrusive attributes – making them good candidates as sustainable monitoring tools. There is promise for transfer of these approaches to …
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Remediation of chromium contaminated soils with colloidal silica
… the colloidal silica solution is injected into contaminated soil, it moves through the pores inside the soil matrix, initiating the stabilization process. The viscosity of the colloidal silica mixture increases while it moves until solidifications. This process is called gelation and results in …
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Mechanisms of metal release from contaminated coastal sediments
The fate of trace metals in contaminated coastal sediments is poorly understood, yet critical for effective coastal management. The aim of this thesis is to investigate and quantify the mechanisms leading to the release of silver, lead and copper across the sediment-water interface. Two contrasting …
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