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Interaction Of Methoxyethyl Methyl Imidazolium-Based Ionic Liquids With Uranium And Its Effect On Bioreduction Of Uranium, Hao Wang
Dissertations
Ionic liquids (ILs) are new materials with unique properties such as non-measurable vapor pressure, low melting point below 100°C and tunable physical-chemical properties. These liquids demonstrate tremendous potential applications in many fields, including nuclear waste treatment.
In this study, new MOEMIM (methoxyethyl methyl imidazolium)-based ionic liquids were synthesized. Their properties were characterized by UV-Vis spectroscopy (UV-vis), Fourier transform infrared spectroscopy (ETIR), mass spectroscopy (MS) and NMR (Nuclear magnetic resonance). The interaction between ILs and uranium has been explored by various analysis techniques, including pH, potentiometric titration, UV-vis, MS and EXAFS (extended x-ray absorption fine structure). Among all the ILs studied …
Community-Based Evaluation Of The Air Toxic Provisions Of Title Iii Of The 1990 Clean Air Act Amendments : Risks, Costs And Benefits, Keith C. Silverman
Community-Based Evaluation Of The Air Toxic Provisions Of Title Iii Of The 1990 Clean Air Act Amendments : Risks, Costs And Benefits, Keith C. Silverman
Dissertations
Hazardous air pollutants (HAPs) are those pollutants that are known or suspected to cause cancer, serious health effects, or adverse environmental effects. People exposed to HAPs at sufficient concentrations and durations may have an increased risk of getting cancer or experiencing other health effects. The 1990 Amendments to the Clean Air Act (CAAA) directed the U.S. Environmental Protection Agency (USEPA) to use technology-based air pollution control measures to significantly reduce emissions of HAPs from major sources of air pollution, followed by a risk-based assessment to address any remaining or residual health risks.
This study retrospectively assessed the public health risk …