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 2083 for “"Carbon dioxide"”.
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Supercritical Carbon Dioxide Extraction
… is to explore the properties of supercritical carbon dioxide (CO<sub>2</sub>). In addition, the feasibility of building a small-scale low cost system will be explained. A supercritical fluid is a fluid which exhibits properties between liquid and gas with liquid like densities and viscosities …
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Solubility in supercritical carbon dioxide
… of the solubility of compounds in supercritical carbon dioxide are described. A comparative study is made of the methods used in the measurement of the concentration of benzoic acid and caffeine in supercritical carbon dioxide. The difference in measurement techniques did not have much effect on …
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Carbon Dioxide Fixation in Schistosoma Mansoni
… The worms were found to fix carbon from the NaH<sup>14</sup>0<sub>3</sub> and to incorporate the glucose and aspartate. The amount of activity recovered in five different chemical fractions after two hours incubation was determined for each radiochemical used and compared to …
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A Thermally-Pumped Carbon-Dioxide Laser
Made available in DSpace on 2014-12-08T22:24:45Z (GMT). No. of bitstreams: 1 7013306.pdf: 2642385 bytes, checksum: b6bab465e89335c5b9b8db89aff944fd (MD5) Previous issue date: 1969
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The liability of carbon dioxide shortage
This research examines the liability of storing CO2 in geological formations. There is a potential tortious and contractual liability exposure if stored CO2 is not fully contained by the geological formation. Using a combination of case study and survey methods, this research examines the risks …
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Organic synthesis in suppercritical carbon dioxide
… such as aromatic compounds, chlorinated hydrocarbons, and other organic liquids which pose environmental and health hazards either because of their toxicity or their persistence in the environment. Hence proper disposal of these solvents and the prevention of accidental releases or routine …
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Design of supercritical carbon dioxide centrifugal compressors
… años 60, especialmente el que emplea dióxido de carbono como fluido de trabajo, dada la facilidad de este fluido para ser enfriado con aire ambiente en condiciones todavía supercríticas (es decir, el ciclo es completamente supercrítico). Surgió así un ciclo propuesto por Feher en 1969 que …
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Carbon dioxide transfer through hollow fiber membranes
Studies on absorption of CO2 into an aqueous solution using hydrophobic microporous hollow fiber membranes (HFM's) were performed. The use of HFM's for CO2 transfer could significantly improve the biomass growth rate in a photobioreactor for algal biofuel production. The membrane modules were …
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The reactions of carbon dioxide with complexes
… this thesis are concerned with the reaction of carbon dioxide and transition metal complexes of Co, Ir, Rh, Ru. Due to the important role of group VIII transition metals in homogeneous catalytic reactions, the work is mainly concerned with complexes of ruthenium.
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Electrocatalysis: dioxygen reduction and carbon dioxide conversion
U of I Only Restriction Lifted for Item 91480 on 2018-03-09T10:15:25Z.
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Monitoring Sub-Surface Storage of Carbon Dioxide
… into a pristine, saline aquifer at the Sleipner carbon capture and storage project. A suite of time-lapse, three-dimensional seismic reflection surveys have been acquired over the injection site. This suite includes a pre-injection survey acquired in 1994 and seven post-injection surveys acquired …
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Electrochemistry of formic acid and carbon dioxide on metal electrodes with applications to fuel cells and carbon dioxide conversion devices
… research is reported for fuel cells and carbon dioxide reduction, with the aim of reducing the environmental footprint of global energy use. In studies of the formic acid fuel cell, it is reported here that an increase in the formic acid fuel pH increases the rate of formic acid oxidation …
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Determining carbon dioxide footprint using data center simulators
… cycle assessment approach, it is shown how the carbon footprint of data centers can be comprehensively calculated. For this purpose, several life cycle stages are determined that contribute to the CO2 footprint during the life cycle of a data center. Based on the life cycle stages, requirements …
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BIO-ELECTRORECYCLING OF CARBON DIOXIDE INTO VALUABLE PRODUCTS
Carbon dioxide (CO2) is largely emitted during the combustion of fossil fuels for transportation, electricity generation, and other industrial processes. CO2 is an inorganic compound that naturally exists on Earth, but its concentration has increased exponentially since the industrial revolution, …
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Removal of polymer coating with supercritical carbon dioxide
… the use of supercritical fluids, and carbon dioxide in particular, for the removal of polymer coatings. Research into new supercritical fluid applications is nearly always based on a trial and error approach, and frequently requires evaluating each operation on a case-by-case basis. A …
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Inactivation of Allergenic Proteins by Compressed Carbon Dioxide
… attention. It has been shown that supercritical carbon dioxide, a benign solvent, can kill a wide spectrum of living organisms, from easy-to-kill mammalian cells to hard-to-kill bacterial spores. Recently, carbon dioxide was proven to achieve more than 90% reduction in enzyme activity of trypsin, …
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Synthesis of polymeric nanocomposites in supercritical carbon dioxide
Supereritical carbon dioxide has been of great interest in various areas of chemical science and engineering during the last decade. In this thesis, the properties of poly (methyl methacrylate) (PMMA)/silica nanocomposites with different surfactant and filler concentrations synthesized through …
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