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.
Results
Showing 1 to 20 of 62 for “"dechlorination"”.
-
The Effect of Cyclodextrin on Reductive Dechlorination
… addition of cyclodextrin (CD) affects reductive dechlorination of chlorinated ethenes. After chlorinated solvent degradation rates were established in anaerobic and aerobic microcosms, 100 mg/L of CD solution was added for a period of 21 days. CD was then removed after 26 days to simulate the …
-
Adsorption and dechlorination of chlorophenols under acidogenic conditions
… aims to utilize the acidogenic phase to induce dechlorination. Reductive dechlorination under acidogenic condition was achieved for carbon tetrachloride (CCl4), 2,4,6-trichlorophenol (2,4,6-TCP) and pentachlorophenol (PCP). CCl4 was degraded to dichloromethane without the need for acclimation. …
-
Rapid reductive dechlorination of environmentally hazardous aromatic compounds and pesticides
… palladized iron (Pd/Fe), to effect the complete dechlorination of these compounds, at ambient temperature and pressure, in a matter of minutes. The dechlorination reaction occurs on the surface of the palladized iron, with removal of all the chlorine atoms from the chlorinated compound and yields …
-
Enhanced Dechlorination of 1,2-Dichloroethane by Coupled Nano Iron-Dithionite Treatment
… contamination and recalcitrance towards abiotic dechlorination, 1,2-DCA remains a challenging compound for the remediation community and one of the great research interests. Batch experiments combining bimetallic or monometallic nZVI (stabilized or non-stabilized) with sodium dithionite were …
-
Processing parameters and kinetics of phosphate-based dechlorination for electrorefiner salt waste
… lower processing temperatures. Phosphate-based dechlorination has been used to produce intermediate phosphate products before the addition of iron to create the chemically durable final waste form. Using this method, mixing salt with a phosphoric acid and heating to T < 600˚C leads to the …
-
Polychlorinated biphenyl dechlorination with palladized magnesium - Development of a sediment remediation technology
… the US and around the world. In this work, PCB dechlorination by palladium-coated magnesium (Mg/Pd, 0.01% by weight Pd) has been demonstrated in PCB-contaminated marine and freshwater sediments from New Bedford Harbor (NBH), MA; and the Housatonic River (HSR), MA. Experiments were also conducted …
-
Evaluation of Enhanced Bioremediation for Reductive Dechlorination of Tetrachloroethene (PCE): Microcosm Study
… dehalorespirators were capable of partial dechlorination of tetrachloroethene (PCE) to cis-dichloroethene (cis-DCE). This study attempts to achieve complete reductive dechlorination with amendments to static microcosms to test the hypotheses that nutrient-limited or microorganism-limited …
-
Investigation into the Processing Parameters of Phosphate-based Dechlorination of Electrorefiner Salt Waste
… complex radioactive salt waste. Phosphate-based dechlorination is a crucial step in waste processing for volume reduction. The technique for recycling chlorine can be applied to waste from our current fleet or reactors, as well as advanced reactors in which pilot-scale facilities are currently …
-
Isolation and Ecology of Bacterial Populations Involved in Reductive Dechlorination of Chlorinated Solvents
… Careful examination of enrichment culture dechlorination kinetics, 16S rRNA gene based analyses, and reductive dehalogenase gene targeted PCR approaches revealed that complete reductive dechlorination is carried out by multiple dechlorinators. Two new dechlorinating species were isolated …
-
Compatibility and effectiveness of polymer-enhanced chemical oxidation and reductive dechlorination groundwater remediation strategies
Includes bibliographical references (pages 167-176).
-
Mechanistic Studies of Vitamin B(12)-Catalyzed Dechlorination and Carbon-Carbon Bond-Forming Reactions
In the presence of catalytic vitamin B12 and a reducing agent such as TI(III)citrate or Zn, arylalkenes can be dimerized with unusual regioselectivity forming a new carbon-carbon bond between the benzylic carbons of each coupling partner. Dimerization products were obtained in good to excellent …
-
Spatial Relationship between the Trichloroethylene Degrading Bacteria Dehalococcoides Sp., Sulfate Reducers and Archaea during Reductive Dechlorination
Trichloroethylene (TCE) released to the environment is of great concern due to its toxicity and carcinogencity. The microorganisms involved in bioremediation of TCE such as methanogens (organisms within the domain Archaea), sulfate reducing bacteria (SRB) and Dehalococcoides sp. (DHC) are of …
-
A statistical approach to understanding microcosm methods for microbially mediated dechlorination of trichloroethene in bedrock aquifers
… characterization abilities for in situ reductive dechlorination of trichloroethene (TCE) in fractured rock aquifers. Microcosms constructed with unincubated crushed rock in groundwater provided the best microcosm model of in situ TCE degradation, when prepared and incubated to simulate the in situ …
-
Sustainability of reductive dechlorination at chlorinated solvent contaminated sites: Methods to evaluate biodegradable natural organic carbon
Reductive dechlorination is a significant natural attenuation process in chloroethene-contaminated aquifers where organic carbon combined with reducing redox conditions support active dechlorinating microorganisms. At sites where natural organic carbon (NOC) associated with the aquifer matrix …
Page 1 of 4