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 126 for “"CO emissions"”.
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CO₂ emissions reduction potential of aviation biofuels in the US
… identified as a means to reduce carbon dioxide (CO₂) emissions from US aviation, but the magnitude of the possible reduction has not been quantified. This scenario-based analysis quantifies the life cycle greenhouse gas (GHG) mitigation potential of aviation biofuels in 2050 within the US. …
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Spatial variation of AMD related CO₂ emissions on reclaimed mine spoil
<p>"Carbon dioxide (CO₂) from acid mine drainage (AMD)-carbonate neutralization reactions in reclaimed mine spoils, can intermittently invade homes and structures constructed on or adjacent to these spoils in hazardous and even lethal concentrations (>15%) and rendering them uninhabitable. This …
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Potential for meeting the EU new passenger car CO₂ emissions targets
… the European Parliament agreed to limit the CO2 emissions from new passenger cars sold in the European Union to an average of 130g/km by 2015. Further, a probable longer-term CO2 emissions target of 95g/km is specified for 2020. This thesis attempts to assess the feasibility of meeting these …
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Modeling NO and CO emissions in lean natural gas spark ignition engines
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Dynamics of implementation of mitigating measures to reduce CO₂ emissions from commercial aviation
… for air transportation and growing environmental concerns motivate the need to implement measures to reduce CO₂ emissions from aviation. Case studies of historical changes in the aviation industry have shown that the implementation of changes generally followed S-curves with relatively long …
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Potentially available natural gas combined cycle capacity : opportunities for substantial CO₂ emissions reductions
Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, 2010.
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Forecasting CO₂ emissions and identifying key CCUS factors for achieving net-zero targets in the North American cement, iron, and steel industries
Emissions of pollutants and their consequences on the atmosphere have received special attention from international organizations in recent years due to the climate crisis previewed in the next decades. In this regard, Carbon Dioxide (CO2) emissions produced in industrial sectors is one of the most …
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The potential carbon dioxide emissions reduction when energy service interventions are applied to the current subsidised housing demand
… subsidised housing in reducing carbon dioxide (CO₂) emissions in South Africa. Climate change is an occurring event and is largely caused by human activities, such as the production of energy from fossil fuels (NRC, 2010). Buildings are seen as one of the highest consuming sectors of energy and …
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Comparative Energy Efficiency Analysis for Hydrogen and Jet Fuel in Next-Generation Long-Haul Aircraft
The aviation sector aims to reach net-zero CO₂ emissions by 2050. Consequently, the industry must rely on a fuel with no life-cycle CO₂ emissions. Liquid hydrogen offers the potential to provide zero in-flight CO₂ emissions and low life-cycle CO₂ if produced from non-fossil electricity. While …
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A physics-based emissions model for aircraft gas turbine combustors
… a physics-based model of an aircraft gas turbine combustor is developed for predicting NO. and CO emissions. The objective of the model is to predict the emissions of current and potential future gas turbine engines within quantified uncertainty bounds for the purpose of assessing design tradeoffs …
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Historical anthropogenic emissions of carbon monoxide, 1850 - 2000
… bottom-up emission inventory of carbon monoxide (CO) from fossil fuel and biofuel combustion from 1850 to 2000. We reconstruct fuel consumption data of brick and cement industry, as well as production data of iron and steel industry. We develop technology divisions for the four industries and also …
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Influence of fuel sulfur content on emissions from diesel engines equipped with oxidation catalysts
… alternative for alleviating regulated exhaust emissions of hydrocarbon (HC), carbon monoxide (CO), and particulate matter (PM) from diesel-fueled heavy-duty engines. This study was a part of the Diesel Emissions Control-Sulfur Effects (DECSE) program that was aimed at determining the impact of …
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Effects of doping and microstructural variables on hydrogen generated via aluminum-water reactions enabled by a liquid metal
… fossil fuels in numerous industrial sectors, considering its high energy density, ability to be used within our existing power or heating infrastructure, and lack of CO₂ emissions upon conversion of hydrogen's chemical energy into electricity. However, 96% of hydrogen is currently produced …
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Carbon fluxes from tropical peatlands : methane, carbon dioxide, and peatland subsidence
… peat swamp forests, high water levels inhibit decomposition due to anoxic conditions. However, they are being rapidly deforested and drained, releasing stored carbon to the atmosphere. In this thesis, we investigate the carbon dioxide and methane fluxes from both pristine and degraded peat swamp …
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A study on the emissions of butanol using a spark ignition engine and their reduction using electrostatically assisted injection
… in diesel fuel. Additionally, butanol is less corrosive and less prone to water absorption than ethanol, which allows it to be transported using the existing fuel supply pipelines. However, while some previous research on the emissions of butanol-gasoline blends is available, little research …
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Effects of incomplete combustion on atmospheric chemistry: Black carbon climate forcing and global carbon monoxide emissions
This thesis is actually the composition of two separate studies aimed at further understanding the role of incomplete combustion products on atmospheric chemistry. The first explores the sensitivity of black carbon (BC) forcing to aerosol vertical location since BC has an increased forcing per unit …
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Three papers on input-ouput [sic] energy and environmental accounting
… input-output model, a framework for national accounting and economic modeling, has been popular among regional economists for studying energy and emissions due to its focus on interindustry linkages. In a series of three papers, we apply the input-output model to three different aspects of …
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Assessing Opportunities to Reduce Carbon Dioxide Emissions from Electric Arc Furnace Steelmaking in the United States
Steel is energy- and CO₂ emissions-intensive to produce, but it is also a crucial material for infrastructure, defense, and the energy transition. This thesis focuses on Electric Arc Furnace (EAF) steelmaking, which accounts for roughly 70% of steel production in the United States. Decarbonization …
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Feasibility Assessment for Amine-Based Shipboard Carbon Capture
… Maritime Organization (IMO) set goals to reduce CO₂ emissions by 40% in 2030 with efforts toward 70% in 2050 when compared with CO₂ released per ton-mile in 2008. Maritime traffic relies on non-renewable energy-dense fossil fuels and alternative energy sources have yet to prove feasible for a …
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CO₂ and public health impacts of US residential heating electrification
US Residential combustion heating is currently estimated to lead to ~10,000 premature mortalities annually due to degraded air quality. Replacement of this combustion heating with electric heating is expected to reduce these impacts by shifting emissions away from population centers to electric …
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