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Understanding the variability of GHG life cycle studies of oil sands production

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In a paper published in the ACS journal Environmental Science & Technology , Stanford University assistant professor Adam Brandt reviews a number of recent life cycle assessment (LCA) studies calculating greenhouse gas (GHG) emissions from oil sands extraction, upgrading, and refining pathways—the results of which vary considerably.

Oil-Sands 225
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Researchers Say Mix of Policies and Current or Near-Term Technologies Could Phase Out US CO2 Emissions from Coal-Fired Power Plants by 2030

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Life-cycle GHG emissions from fossil and alternative sources of electricity. This global climate change problem becomes manageable only if society deals quickly with emissions of carbon dioxide from burning coal in electric power plants, they state. Credit: ACS, Kharecha et al. Click to enlarge. Kharecha et al. Kharecha et al.

Coal 239
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ExxonMobil Outlook projects hybrids and advanced vehicles to account for nearly 50% of cars globally by 2040; fuel demand for for personal vehicles to peak and decline, while commercial transportation demand rises 70%

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While oil will remain the most widely used fuel, overall energy demand will be reshaped by a continued shift toward less-carbon-intensive energy source as well as steep improvements in energy efficiency in areas such as transportation, where the expanded use of advanced and hybrid vehicles will help push average new-car fuel economy to 48 mpg (4.9

Personal 408
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Argonne study finds shale gas GHG lifecycle emissions 6% lower than natural gas, 23% lower than gasoline and 33% lower than coal; upstream methane leakage a key contributor

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Gasoline section shows results for fuel derived from both conventional oil and oil sands. However, the range in values for shale and conventional gas overlap, so there is a statistical uncertainty whether shale gas emissions are actually lower than those of conventional natural gas. Click to enlarge.

Gas 284
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Peabody Energy and GreatPoint Energy To Partner on Coal-to-Gas and Coal-to-Hydrogen Facilities with Carbon Capture and Storage

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Overview of the bluegas catalytic coal methanation process. The projects would be developed using GreatPoint’s proprietary bluegas technology, which utilizes catalytic hydromethanation to create pure hydrogen and substitute natural gas (SNG) that is pipeline-ready in a single-stage gasification process. Click to enlarge.

Coal 186
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ExxonMobil Outlook: 35% growth in energy demand by 2040; hybrids to account for ~50% of new vehicle sales

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ExxonMobil projects that meeting future energy demand will be supported by more efficient energy-saving practices and technologies; increased use of less-carbon-intensive fuels such as natural gas, nuclear and renewables; as well as the continued development of technology advances to develop new energy sources. Transportation.

Oil-Sands 309
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National Academies Report Examines Hidden Cost of Energy Production and Use in US; Estimates $120B in 2005

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A new report from the National Research Council examines and, when possible, estimates, “hidden” costs of energy production and use—such as the damage air pollution imposes on human health—that are not reflected in market prices of coal, oil, other energy sources, or the electricity and gasoline produced from them.

2005 246