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 17 of 17 for “"biological oxidation"”.
-
Combining chemical with biological oxidation for efficient treatment of chloronitrobenzene in groundwater
… immediate remedial approaches, such as advanced oxidation processes (AOPs). While AOPs are effective for the removal of many organic contaminants from water, these techniques are often costly, especially when complete mineralization is the goal. In this study, it was hypothesized that chemical …
-
Evaluation of the Redostat™ device for the study of ferrous iron biological oxidation kinetics.
… timeframe, if the kinetics of ferrous iron biological oxidation can be accelerated. This requires careful study of the bio-oxidation kinetics under heap-like conditions. Two different experimental methods are commonly used for the study of ferrous iron biological oxidation kinetics, namely …
-
Simulation and optimization of a package sewage treatment plant
… procedure was used to determine the best set of biological reaction constants K1 and K2 which would characterize the substrate removal behavior of the Aquatair biological oxidation tower and recirculation chamber, respectively, based on actual plant data. Once the behavior of the plant was …
-
The effects of cellular quiescence on the antioxidant defense enzymes of bovine embryonic lung fibroblasts: a survey
… (O₂⁻) and the hydroxyl radical (OH⁻), formed in biological oxidation reactions may be responsible for cellular aging. Because of the high reactivity of the O₂⁻ and the OH⁻ they can produce extensive damage to lipids, proteins, and nucleic acids. In this study we have developed an <i>in vitro</i> …
-
Evaluation of ozone treatment, pilot-scale wastewater treatment plant, and nitrogen budget for Blue Ridge Aquaculture
… and TAN was observed, indicating the need for biological treatment following ozonation. Next, I evaluated a pilot station treatment train including sedimentation, microscreen filtration, fluidized bed denitrification, ozonation, aerobic biological oxidation in a trickling filter, and jar-test …
-
Identity and dynamics of the microbial community responsible for carbon monoxide oxidation in marine environments
… An important sink for CO in seawater is the biological oxidation of CO to CO2 by marine microorganisms. The objectives of this study are to identify component members of the microbial community responsible for the oxidation of CO in coastal marine environments through a combination of recent …
-
The analysis of salt resistant surfactants used in enhanced oil recovery.
… the last section of this thesis the chemical oxidation of NPEOS used Fenton's reagent and biological oxidation of NPEOS using a microorganism (Paracoccus halodenitrificans) is reported. The intermediate products formed in the chemical oxidation have been identified and characterized by LC, …
-
Methylene Blue Reduction by Root Tips of Alluim Cepa
No abstract prepared.
-
Removal Of Refractory Tkn From An Effluent Wastewater Using Sodium Ferrate
… forms of nitrogen that, even with advanced biological nitrification-denitrification systems are not removed completely from domestic wastewater. TKN (Total Kjeldahl Nitrogen), ammonia plus organic nitrogen, is one of the forms to measure the levels of nitrogen present in effluent …
-
Variations in the Oxidative Rates of Nitrosomonas europaea in Coke-Plant Activated Sludge.
… of ammonia removal have made nitrification, the biological oxidation of ammonia, an attractive alternative. TheNitrification in an activated-sludge process is, however, sometimes inconsistent. Thus, in order to maximize the efficiency of this biological process, it is essential to improve our …
-
A mathematical model of a high sulphate wastewater, anaerobic treatment system
… originating from industrial activity or from the biological oxidation of sulphide ores (acid mine drainage), cannot be discharged into the environment untreated. Apart from the high sulphate levels, these waters may be very acidic and have high dissolved heavy metal concentrations. One promising …
-
Polycyclic Aromatic Hydrocarbons and Redox Parameters in a Creosote-Contaminated Aquifer
… data suggests that they are being used in the biological oxidation of PAHs. Although laboratory studies document the oxidation of PAHs under sulfate-reducing conditions, high aqueous sulfate values were recorded throughout the site, regardless of the level of contamination. Several possible …
-
Management strategy of landfill leachate and landfill gas condensate
… are bio-refractory and able to penetrate the biological treatment processes, consequently interfere the UV disinfection in WWTPs. The other one is organic nitrogen, which can pass the nitrification-denitrification process and contribute to the effluent total nitrogen (TN). Also, treatability …
-
Microbial Oxidation of Arsenite in Anoxic Environments: Impacts on Arsenic Mobility
… zone by injection of gaseous O2 to promote oxidation reactions of As(III) and Fe(II), but O2 is poorly soluble and chemically reactive and thus difficult to distribute in the subsurface. Nitrate or chlorate can be considered as alternative oxidants with advantages over elemental oxygen due …
-
Bio-inspired iron complexes featuring secondary coordination sphere interactions: Ligand design strategies and dioxygen reactivity
… an important role in processes ranging from biological oxidation to energy storage and utilization. In Nature, metalloenzymes use complex architectures to promote these multi-electron and multi-proton reactions using first-row transition metal centers. Many enzymes rely on well-place hydrogen …
-
Use of Dry Whey and Lactose Hydrolysis in Yogurt Bases
… municipal sewerage systems because of its high biological oxidation demand (53). The dairy industry is always interested in use of new and different ingredients that are lower in cost and do not affect quality of product. A great deal of research has been aimed toward promoting proper …
-
A prototype dynamic model for the co-treatment of a high strength simple-organic industrial effluent and coal-mine drainage
This research study's the use of biological sulfate reduction technologies for the treatment of Sasol Secunda's coal-mine drainage (CMD) using Fischer-Tropsch Reaction Water (FTRW) as a cost-efficient carbon source. The research aims to develop a prototype dynamic model that describes this …