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Study finds that environmental impact of corn-ethanol E85 is 23% to 33% higher than that of gasoline; environmental problem-shifting

Green Car Congress

Environmental impacts of gasoline and E85. GW = global warming; Eut. eutrophication; ET = ecological toxicity; FEC = fossil energy consumption; WU = water use; LO = land occupation; “The rest” includes acidification; smog formation; ozone layer depletion; and human health effects. Process flow diagrams for E85 and gasoline.

Gasoline 357
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Study Finds Controlling Soot May Be Fastest Method to Reduce Arctic Ice Loss and Global Warming; Second-Leading Cause of Global Warming After CO2

Green Car Congress

Controlling soot from fossil fuels and solid biofuels may be a faster method of reducing Arctic ice loss and global warming than other options, including controlling CH 4 or CO 2 , although all controls are needed, according to a new study by Dr. Mark Z. Jacobson at Stanford University. He also found that soot emissions kill more than 1.5

Global 230
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Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

Green Car Congress

Researchers from the University of Minnesota have produced a spatially and temporally explicit life cycle inventory (LCI) of air pollutants from gasoline, ethanol derived from corn grain, and ethanol from corn stover for the contiguous US (the lower 48 states). Associated tailpipe emissions alone account for 40?60% the contiguous US).

Gasoline 236
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Tohoku team finds swirling ammonia in combustion chambers can help reduce NO emissions

Green Car Congress

Although the space and time-averaged emission (STAE) of NO was found to decrease with increase in the global equivalence ratio (global ?) Zones of high NO concentration were identified near the combustor wall boundaries, whereas there was almost nil NO in the combustor centre, irrespective of the global ?.

Emissions 308
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California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

Green Car Congress

Emissions from gasoline used in on-road vehicles are the main driver of that increase. Emissions from transportation sources were relatively constant from 2002 through 2007, declined through 2013, then increased by 9.0 MMTCO 2 e (6%) from 2013 to 2017. The unit is in terawatt-hour (1 TWh = 10 9 kWh).

2017 230
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EPA proposes stringent new emissions standards for light-, medium-, heavy-duty vehicles for MY 2027 and beyond

Green Car Congress

The proposal retains the proven regulatory design of previous EPA standards for light-duty vehicles, but leverages advances in clean car technology to further reduce both climate pollution and smog- and soot-forming emissions. Future gasoline fuel property standards.

EPA 210
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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

In 1975, General Ernesto Geisel, then-president of Brazil, ordered the country’s gasoline supply mixed with 10% ethanol. The level was raised to 25% over the next five years, which was intended to maintain a constant Brazilian gasoline supply for an ever-increasing demand. These were arguably the first flex-fuel vehicles.