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 16 of 16 for “"aerobic biodegradation"”.
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Aerobic Biodegradation of MTBE in Uncontaminated and Gasoline-Contaminated Aquifer Sediments
In this study, the biodegradation potential of MTBE in uncontaminated and previously contaminated aquifer sediments under aerobic conditions was investigated. Laboratory microcosms were constructed using aquifer samples collected from three different areas of a shallow gasoline-contaminated aquifer …
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Halogenated aliphatic and aromatic aerobic biodegradation via direct metabolism and cometabolism: batch and continuous tests
… strains or mixed microbial population via aerobic direct metabolism or cometabolism using as a growth substrates aromatic or aliphatic hydrocarbons. The enhancement of two specific processes has been here object of study in relation with its own respective scenario described as follow: 1st) …
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An investigation into the bioremediation of black olive brine wastewater
… to have antimicrobial and phytotoxic effects. Aerobic biological treatments have been extensively investigated in order to reduce the phenolic fraction of olive mill wastewaters (OMW) with relative success. Biological treatment methods are also cheaper than chemical or physical treatment …
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Biodegradation of 2,4-Dinitrotoluene in the Waste Streams of a Munitions Plant
… Previous studies have indicated that DNT is aerobically biodegradable. However, inconsistent removal of DNT during aerobic treatment has been observed at a munitions wastewater treatment plant, necessitating the use of activated carbon pre-treatment. The objective of this study was to …
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The fabrication of biodegradable nanospheres from novel hydroxalkanoates for the delivery of actives of pharmaceutical and agricultural interest
… has been used to investigate the role polymer biodegradation by enzymatic and chemical means might play in the in vivo release of actives and agricultural applications. The potential environmental biodegradation of Monsanto polymers has been investigated using a composting study (International …
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Impacts of Sequential Microbial Electron Accepting Processes on Natural Attenuation of Selected Petroleum Hydrocarbons in the Subsurface Environment
… that natural processes, such as sorption and biodegradation, attenuate specific contaminants of concern on a time scale that is comparable to other remediation options while concurrently preventing contaminant migration to site-specific points of contact. Two of the tools used to demonstrate …
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Sequential Electron Acceptor Model of Intrinsic Bioremediation at a BTEX Contaminated LUST Site in Laurel Bay, South Carolina
… complex, interconnected processes including biodegradation, and the transport of multiple hydrocarbon compounds, electron acceptors, and end products over time and space at a specific petroleum hydrocarbon contaminated site. Once the model was calibrated and verified, the model output was …
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Evaluation of the immobilized soil bioreactor for treatment of naphthenic acids in oil sands process waters
… Previous studies have demonstrated that aerobic biodegradation reduces NA concentrations and OSPW toxicity; however, treatment times are long. The objective of this study was to evaluate the feasibility of an immobilized soil bioreactor (ISBR) for treatment of NAs in OSPW and to determine …
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The analysis of salt resistant surfactants used in enhanced oil recovery.
… acids and single carboxylic acids. The aerobic biodegradation of NPEOS was carried out over five days. Theoxygen uptake was measured each day. The biodegradation intermediate products were analysed by LC and data indicate that the same products were formed as those from the chemical …
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Biodegradation of Volatile Hydrocarbons in Estuarine Environments
… environments is not completely elucidated. Aerobic and anaerobic degradation of these VOCs in the Colne estuary, UK, was investigated using both cultivation-dependent and independent approaches, to understand the effect of VOC-type, concentration and estuarine location on degradation and …
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The development of methods and equipment for the study of the aerating capabilities of a microdispersion of air in water
… type of <i>in-situ</i> remediation, particularly aerobic biodegradation, is sought. Although considered the preferred treatment method, <i>in-situ</i> biodegradation's usefulness is currently limited by oxygen delivery and retention techniques. A novel method of delivering supplemental oxygen to …
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An investigation of recalcitrant organic compounds in leachates
… regard. In one experiment, a laboratory scale aerobic biodegradation is carried out on four untreated and two treated leachate samples collected from two UK MSW landfills (Pitsea and Rainham), and leachates are characterised using conventional methods (COD and DOC) as well as UV absorption and …
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An evaluation of the environmental fate of reactive dyes
… and in the environment are principally through anaerobic and aerobic biodegradation and photodegradation. The research herein describes the use of LC-MS analysis with laboratory simulations to develop a better understanding of the occurrence and fate of reactive dyes and their degradation products …
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Fate of 17α-Estradiol, 17β-Estradiol, and Estrone in Agricultural Soils and Sediments
… soil phase concentrations were measured; (2) the aerobic biodegradation of 17α-E2 and 17β-E2 in soils using aerobic soil microcosms on two soils with different taxonomic properties, sacrificed over a 3-week period; and (3) the biotransformation of 17α-E2, 17β-E2, and E1 in sediments using …
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COMBINING GEOCHEMICAL AND NUMERICAL MODELING FOR CHLORINATED SOLVENTS GROUNDWATER CONTAMINATION
… via reductive dechlorination (RD) under anaerobic conditions, while the less chlorinated compounds such as dichloroethene (DCE) and vinyl chloride (VC) are better degraded via oxidation (OX) under aerobic conditions. Thus, sequential bioremediation systems (SBSs) able to stimulate anaerobic …
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Microbial monitoring and degradation of lindane in soil
… a promising bioaugmentation technology for the aerobic biodegradation of lindane by surveying microbiological inoculants and by designing a suitable inoculation procedure for their introduction into the environment. The occurrence of HCH degraders was investigated in several contaminated soils. …