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 40 for “"chlorinated solvents"”.
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Electrochemical and thermochemical destruction of chlorinated solvents
… method was developed to destroy liquid chlorinated solvents, and a thermochemical technique was invented to reduce gas-phase chlorinated solvents to hydrocarbons. The developed electrochemical method belongs to the most potential technique for wastewater treatment--only electrochemical …
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Sorption of chlorinated solvents in a sandy aquifer
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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COMBINING GEOCHEMICAL AND NUMERICAL MODELING FOR CHLORINATED SOLVENTS GROUNDWATER CONTAMINATION
… degradation of each chloroethene. The more chlorinated ones such as tetrachloroethene (PCE) and trichloroethene (TCE) are better degraded via reductive dechlorination (RD) under anaerobic conditions, while the less chlorinated compounds such as dichloroethene (DCE) and vinyl chloride (VC) …
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Natural attenuation of chlorinated solvents at Ashumet Valley, Cape Cod, Massachusetts
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Isolation and Ecology of Bacterial Populations Involved in Reductive Dechlorination of Chlorinated Solvents
… involved in complete reductive detoxification of chlorinated ethenes and are widely distributed in anoxic sediments and aquifers, including non-contaminated (pristine) environments. Careful examination of enrichment culture dechlorination kinetics, 16S rRNA gene based analyses, and reductive …
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Biodegredation of chlorinated solvents in the sediment of Ashumet Pond, Cape Cod, MA
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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The Feasibility of Bioaugmentation for the Remediation of Chlorinated Solvents: A Microcosm Study
Chlorinated solvents are among the most prevalent contaminants at Superfund sites. Perchloroethylene (PCE) and its degradative byproducts pose a particular problem because of their persistence in the subsurface and their threat to ecological health. In this study, microcosms were used to test the …
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Removal of microorganisms and proteins from sewage and industrial waste with chlorinated solvents
… The object of this investigation was to evaluate chlorinated solvent processes for the removal of microorganisms, proteins, and other substances from sewage and other wastes. Six different chlorinated solvents were added to different waste samples in the ratio (by volume) of five percent solvent …
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Separating the Kinetic and Sorption Parameters of Mixed Chlorinated Solvents in Contact with Granular Iron
Chlorinated solvents and nitroaromatic solvents in drinking-water supplies are an important concern for public health. Granular iron, the most common medium in permeable reactive barriers (PRBs), is very effective at removing organic chemicals, such as chlorinated solvents and nitroaromatic …
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Utilization of predispersed solvent extraction for removal and enzymatic degradation of chlorinated solvents in ground water
… system to remove trace amounts of dissolved chlorinated solvents like perchloroethylene (PCE) and trichloroethylene (TCE) from contaminated ground water has been investigated. In PDSE, the solvent is comminuted into globules with diameters ranging from submicron to 100 microns, and stabilized …
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Design of an in situ bioremediation scheme of chlorinated solvents by reductive dehalogenation sequenced by cometabolic oxidation
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Combination of zero-valent iron and granular activated carbon for the treatment of groundwater contaminated with chlorinated solvents
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Evaluation of Chitin as an Electron Donor and Nutrient Source for Stimulating the in Situ Bioremediation of Chlorinated Solvents
This work indicates that chitin may have several advantages over conventional, liquid electron donor injection for the in situ bioremediation of chloroethenes, and raises interesting questions on microbial community structure and motility in groundwater systems.
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The use of Geographic Information System (GIS) for regional scale groundwater contamination risk assessment by chlorinated solvents in the Permo-Triassic sandstone aquifer
… dense non-aqueous phase liquids (DNAPLs) such as chlorinated solvents is an increasing problem being faced throughout the industrialised world. The transport and eventual fate of these compounds in the subsurface is controlled by the nature of the chemical spillage, the hydrogeological …
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Conceptual design of an in-situ sequential anaerobic/aerobic bioremediation scheme for chlorinated solvents in the Landfill-1 plume at the Massachusetts Military Reservation
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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The synthesis and characterization of novel rhodium alkenyl complexes and rhodacycloalkanes
… oils that were found to be stable in air and non-chlorinated solvents, but unstable in chlorinated solvents. They were characterized by NMR, MS and elemental analysis. Ring-closing metathesis (RCM) reactions were carried out on two of the bis-alkenyl complexes (n = 4, 6) in the presence of Grubbs' …
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Experimental and theoretical modeling of DNAPL transport in vertical fractured media
… non-aqueous phase liquids (DNAPLs) such as chlorinated solvents and polychlorinated biphenyls (PCBs) has become an important environmental concern in many industrialized areas. Accidental spills, poor storage facilities and inadequate disposal practices are factors contributing to the …
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Microcosms and field bioremediation studies of Perchloroethene (PCE) contaminated soil and groundwater
… private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethylene (PCE, …
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